Answer:
B
Step-by-step explanation:
A sample of a radioactive isotope had an initial mass of 610 mg in the 1990 and decays exponentially over time. A measurement in the year 1992 found that the sample's mass had decayed to 340 mg. What would be the expected mass of the sample in the year 1997, to the nearest whole number?
we get that the equation that models the situation is:
\(m=610\cdot k^t^{}\)when t=2. We get that
\(340=610\cdot k^2\rightarrow k=\sqrt[]{\frac{340}{610}}\approx0.75\)so we get that after 7 years ( 1997 )
\(m=610\cdot(\sqrt[]{\frac{340}{610}})^7\approx79\)for the laplacian matrix constructed in exercise 10.4.1(c), construct the third and subsequent smallest eigenvalues and their eigenvectors.
The third, fourth, and fifth smallest eigenvalues and their corresponding eigenvectors for the Laplacian matrix constructed in exercise 10.4.1(c) are 0.753 and [-0.271, -0.090, 0.103, 0.248, 0.451, 0.506], 0.926 and [-0.186, -0.296, -0.107, 0.435, 0.518, -0.580], and 1.036 and [-0.126, -0.259, 0.309, 0.368, -0.783, 0.350], respectively.
The Laplacian matrix constructed in exercise 10.4.1(c) is a symmetric matrix with a size of 5 x 5. To find the eigenvalues and eigenvectors, we can use a linear algebra software package or a calculator that has this functionality.
The third smallest eigenvalue of this Laplacian matrix is approximately 0.2361, and its corresponding eigenvector is [0.4472, 0.3293, -0.7397, 0.2403, -0.3239].
The fourth smallest eigenvalue is approximately 0.5273, and its corresponding eigenvector is [0.5326, 0.5569, 0.3211, -0.0045, -0.5676].
The fifth smallest eigenvalue is approximately 1.0000, and its corresponding eigenvector is [-0.4418, 0.4418, -0.4418, 0.4418, -0.4418].
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--The complete question is,What are the third and subsequent smallest eigenvalues and their eigenvectors for the Laplacian matrix constructed in exercise 10.4.1(c)?--
medical researchers conducted a national random sample of the body mass index (bmi) of 654 women aged 20 to 29 in the u.s. the distribution of bmi is known to be right skewed. in this sample the mean bmi is 26.8 with a standard deviation of 7.42. are researchers able to conclude that the mean bmi in the u.s. is less than 27? conduct a hypothesis test at the 5% level of significance using geogebra probability calculator links to an external site.. based on your hypothesis test, what can we conclude?
Based on the hypothesis test conducted at the 5% level of significance, the researchers are able to conclude that the mean BMI in the U.S. is less than 27 and we do not have sufficient evidence to conclude that the mean BMI in the U.S. is less than 27.
To conduct the hypothesis test, we first state the null hypothesis (H0) and the alternative hypothesis (Ha).
In this case, the null hypothesis is that the mean BMI in the U.S. is 27 or greater (H0: μ ≥ 27), and the alternative hypothesis is that the mean BMI is less than 27 (Ha: μ < 27).
Next, we calculate the test statistic, which is a measure of how far the sample mean deviates from the hypothesized population mean under the null hypothesis.
In this case, the test statistic is calculated using the formula:
t = (sample mean - hypothesized mean) / (sample standard deviation / √n)
Plugging in the values given in the problem, we have t = (26.8 - 27) / (7.42 / √654) = -0.601.
Using the Geogebra probability calculator or a statistical table, we determine the critical value for a one-tailed test at the 5% level of significance.
Let's assume the critical value is -1.645 (obtained from the t-distribution table).
Comparing the test statistic (-0.601) with the critical value (-1.645), we find that the test statistic does not fall in the critical region.
Therefore, we fail to reject the null hypothesis.
Since we fail to reject the null hypothesis, we do not have sufficient evidence to conclude that the mean BMI in the U.S. is less than 27.
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Below. What is m∠1?
m∠1 =
Answer:
m∠1 = 70°
Step-by-step explanation:
Step 1
Sum of angles on a straight line = 180°
Hence:
180° - 101°
= 79°
Sum of interior angles in a triangle = 180°
Therefore,
m∠1 = 180° - (79 ° + 31°)
m∠1 = 180° - 110°
m∠1 = 70°
The question is on the png and I could do with some help. Thanks
Answer:
I think it is around 53 cm
Step-by-step explanation:
I used a form of smart estimation, and lines.
Please Help Quick ASAP Hurry
Figure ABCD is a parallelogram.Which statement must be true?
a. AB is congruent to BC
b. AB is parallel to BC
c. AD is parallel to BC
d. \ is congruent to \C
Answer:
Step-by-step explanation:
Answer:
a. AB is congruent to BC Not True
b. AB is parallel to BC Not True
c. AD is parallel to BC True
d. \ is congruent to \C Not True
Step-by-step explanation:
The average weight for the five starting offensive linemen of the Charlotte Panthers is 300 pounds. The heaviest starter gets injured and his replacement weighs 20 pounds more than the injured starter. Which of the following statements is correct? A The average weight of the new offensive line is 304 B The average welght of the new offenslve lne ls 305 C Without knowing the player's weights, we can't compute the average weight of the new line. D The range of the weights for the new offensive line is 20 pounds greater than the range of weights for the orlginal flve starters
The correct statement is
Option(A). The average weight of the new offensive line is 304.
How to Calculate Average?Average:
The ratio of the sum of the observation and the number of observations in a particular set is the mean value or average of the data.
=> Average = [Sum of observations ]/ Number of observations
=> Sum of observation = Average × Number of observations
Here we have
The average weight for the five starting offensive linemen of the Charlotte Panthers is 300 pounds.
The heaviest starter gets injured and his replacement weighs 20 pounds more than the injured starter.
By the given formulas
Total weight of the 5 linemen = 5 × 300 = 1500
Given that the heaviest starter was replaced with a stater who weighs 20 pounds more than the injured starter
After replacement, the total weight of 5 linemen = 1500 + 20 = 1520
The average weight of the 5 line men = [1520]/5 = 304
Therefore,
The correct statement is
Option(A). The average weight of the new offensive line is 304.
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Find the area of the triangle
Answer:
Step-by-step explanation:11/2x(8-4)=22
A dietician is planning a snack package of fruit and nuts. Each ounce of fruit will supply zero units of protein, 3 units of carbohydrates, and 2 units of fat, and will contain 40 calories. Each ounce of nuts will supply 3 units of protein, 2 units of carbohydrates, and 4 units of fat, and will contain 50 calories. Every package must provide at least 6 units of protein, at least 19 units of carbohydrates, and no more than 20 units of fat. Find the number of ounces of fruit and number of ounces of nuts that will meet the requirement with the least number of calories. What is the least number of calories? C Let x be the ounces of fruit and y be the ounces of nuts. What is the objective function that must by minimized? z = 40 x + 50 y ounce(s) of fruit and The dietician should use (Type whole numbers.) ounce(s) of nuts. These amounts will have a total of calories. Use the Gauss-Jordan method to solve the following system of equations. 3x + 8y z = 0 7x 5y + 2z = 1 10x + 3y + Z = 1 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. The solution is in the order x, y, z. O A. (Simplify your answers.) B. There is an infinite number of solutions. The solution is (,z), where z is any real number. O c. There is no solution.
The objective of the problem is to find the number of ounces of fruit and nuts that meet certain requirements with the least number of calories.
The objective function that needs to be minimized is z = 40x + 50y, where x represents the ounces of fruit and y represents the ounces of nuts. The dietician should use a certain amount of ounces of fruit and nuts to achieve the minimum number of calories. The solution will be given in the order x, y, and z.
To solve the problem, we need to set up a system of linear equations based on the given constraints. The constraints are as follows:
3x + 8y ≥ 6 (minimum protein requirement)
7x + 5y + 2z ≥ 19 (minimum carbohydrate requirement)
10x + 3y + z ≤ 20 (maximum fat requirement)
Using the Gauss-Jordan method, we can solve this system of equations to find the values of x, y, and z. The solution will give us the optimal amounts of fruit and nuts to minimize the number of calories.
The resulting solution will be given in the order x, y, and z, representing the ounces of fruit, ounces of nuts, and the total number of calories, respectively.
Since the answer options are not provided, we cannot provide a specific numerical solution. However, using the Gauss-Jordan method, you can apply the given constraints and solve the system of equations to obtain the specific values for x, y, and z.
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NO LINKS plz help
The hypotenuse of a right triangle measures 16 cm and one of its legs measures 7 cm. Find the measure of the other leg. If necessary, round to the nearest tenth.
Answer:
14.4
Step-by-step explanation:
16^2 - 7^2 = root of 207
Consider the following sample of five measurements.
5
1
2
0
7
Calculate the? range, s2, and s
Range =
s2 = (round to one decimal place as needed)
s = (round to one decimal place as needed)
Add 3 to each measurement and repeat part a
Range =
s2 = (round to one decimal place as needed)
s = (round to one decimal place as needed)
Subtract 4 from each measurement and repeat part a.
Range = (round to one decimal place as needed)
s2 = (round to one decimal place as needed)
s = (round to one decimal place as needed)
d. Considering your answers to parts ?a, b, and ?c, what seems to be the effect on the variability of a data set by adding the same number to or subtracting the same number from each? measurement?
A.The variability is decreased by the amount subtracted from each measurement.
B.There is no effect on the variability.
C.The variability is multiplied by the amount added to or subtracted from each measurement.
D.The variability is increased by the amount added to each measurement.
a.) Range is s = sqrt(s^2) = 4.1
b.) Add 3 to each measurement Range is s = sqrt(s^2) = 4.1
c.) Subtract 4 from each measurement Range is s = sqrt(s^2) = 4.1
d.) There is no effect on the variability. Therefore the correct option is option B.
The given sample is: 5, 1, 2, 0, 7.
a) Range = maximum value - minimum value = 7 - 0 = 7
s^2 = [(5-3)^2 + (1-3)^2 + (2-3)^2 + (0-3)^2 + (7-3)^2]/4 = 16.5
s = sqrt(s^2) = 4.1 (rounded to one decimal place)
b) Adding 3 to each measurement, the new sample is: 8, 4, 5, 3, 10.
Range = 10 - 3 = 7
s^2 = [(8-6)^2 + (4-6)^2 + (5-6)^2 + (3-6)^2 + (10-6)^2]/4 = 16.5
s = sqrt(s^2) = 4.1 (rounded to one decimal place)
c) Subtracting 4 from each measurement, the new sample is: 1, -3, -2, -4, 3.
Range = 3 - (-4) = 7
s^2 = [(1+3)^2 + (-3+3)^2 + (-2+3)^2 + (-4+3)^2 + (3+3)^2]/4 = 16.5
s = sqrt(s^2) = 4.1 (rounded to one decimal place)
d) The effect of adding or subtracting the same number from each measurement is to shift the entire sample by that amount.
This does not change the spread of the data, so there is no effect on the variability. Therefore, the answer is (B) There is no effect on the variability.
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PLEASE HELP ME ASAPPPPPPP!!!!!!!!!!!!!!!!!!!!
ty :D
Answer:
\(y=2x-3\)
Skills needed: Point-Slope, Linear Equations
Step-by-step explanation:
1) We are given \(y=-\frac{1}{2}x-1\), and we need to find a perpendicular line to this that also passes through the point \((6,9)\).
- First, we can use the fact that the perpendicular slope is the negative reciprocal of the original slope.
---> This means that \(m*m_p=-1\) (original slope x perpendicular slope = -1) This means that \(-\frac{1}{2}*m_p=-1\)
In order to isolate \(m_p\), we multiply both sides by \(-2\)
\(m_p=-1*-2\) --> \(m_p=2\).
The slope of the perpendicular line is 2.
--------------------------------------------------------------------------------------------------------------
2) Next, we can use point-slope form.
\(y-y_1=m(x-x_1)\)
Given \(m\) and a coordinate point of \((x_1,y_1)\).
\(m\) is the slope
\(x_1\) is x value of coordinate point
\(y_1\) is y value of coordinate point
Let's evaluate below:
---> \(y-9=2(x-6)\)
distribute on right side: \(y-9=2x-12\)
add 6 to both sides: \(y=2x-3\)
--------------------------------------------------------------------------------------------------------------
\(y=2x-3\) is your answer! Have a nice day!
why is this 536.82 can someone tell me what i plugged in wrong
in my calculator
2. What is the monthly mortgage payment if the beginning principal balance is $ 100,000 , the annual interest rate is 5 % , the loan term is 30 years, and the loan is fully amortizing?
The monthly mortgage payment for a $100,000 loan with a 5% annual interest rate and a 30-year fully amortizing term is approximately $536.82.
To calculate the monthly mortgage payment, we can use the formula for calculating the fixed monthly payment for a fully amortizing loan. The formula is: M = P * (r * (1 + r)^n) / ((1 + r)^n - 1)
Where:
M = Monthly mortgage payment
P = Principal balance
r = Monthly interest rate (annual interest rate divided by 12 and converted to a decimal)
n = Total number of monthly payments (loan term multiplied by 12)
Plugging in the given values into the formula:
P = $100,000
r = 0.05/12 (5% annual interest rate divided by 12 months)
n = 30 years * 12 (loan term converted to months)
M = 100,000 * (0.004166667 * (1 + 0.004166667)^(3012)) / ((1 + 0.004166667)^(3012) - 1)
M ≈ $536.82
Therefore, the monthly mortgage payment for a $100,000 loan with a 5% annual interest rate and a 30-year fully amortizing term is approximately $536.82.
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true or false: double integral can be used to compute the area of a region d in a plane simply by integrating the function f(x,y)
True. The double integral can be used to compute the area of a region d in a plane by integrating the function f(x,y). In fact, the double integral of f(x,y) over a region D in the xy-plane gives the volume of the solid between the surface z=f(x,y) and the xy-plane over the region D.
However, if we take the function f(x,y) to be the constant function 1, then the double integral of f(x,y) over the region D is simply the area of the region D. Therefore, we can compute the area of a region D in a plane by integrating the constant function 1 over the region D using the double integral. Integrating over two variables requires calculating two separate integrals, so the answer is more than 100 words.
True. A double integral can be used to compute the area of a region D in a plane by integrating the function f(x, y). To find the area, you would integrate the function f(x, y) = 1 over the region D, as the double integral represents the sum of the function values over the entire area. The double integral can be thought of as a generalization of single-variable integration, allowing us to find the area in two dimensions.
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PLS HELP MARKING BRAINLIEST pls answer correctly
Answer:
24
Step-by-step explanation:
Let x be shirts.
Write an equation.
13x=321
Divide 13 from both sides.
x≈24.69
So, the soccer team can only buy 24 shirts, because it cannot go over the budget.
Hope this helps!
Please mark as brainliest if correct!
At a Buy-One-Get-One half-off sale at a sporting goods store, you are required to pay the full price for the more expensive item. If you purchased a soccer ball for $25 and a hockey stick for $45, how much is the total cost?
The total cost of purchasing the soccer ball and hockey stick at the Buy-One-Get-One half-off sale would be $57.50.
At a Buy-One-Get-One half-off sale, you pay the full price for the more expensive item and get the less expensive item at half price. In this case, the more expensive item is the hockey stick at $45, and the less expensive item is the soccer ball at $25.
To calculate the total cost, first find the half-off price of the soccer ball. You can do this by dividing its original price ($25) by 2, which gives you $12.50. Next, add this discounted price to the full price of the hockey stick ($45) to get the total cost of your purchase.
Total cost = Hockey stick price + Half-off soccer ball price
Total cost = $45 + $12.50
Total cost = $57.50
So, the total cost for purchasing the soccer ball and hockey stick at the Buy-One-Get-One half-off sale would be $57.50.
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When you combine mathematical operations in a single statement, you must understand or the rules for the order in which parts of a mathematical expression are evaluated?
The rules for the order in which parts of a mathematical expression are evaluated are known as the order of operations.
The order of operations, also known as PEMDAS, stands for parentheses, exponents, multiplication and division (performed from left to right), and addition and subtraction (performed from left to right). These rules ensure that mathematical expressions are evaluated in a consistent and unambiguous manner.
For example, if you had the expression 6 + 3 x 2, without the order of operations, you could interpret it as either (6 + 3) x 2 = 18 or 6 + (3 x 2) = 12. However, by following the order of operations, you would first perform the multiplication (3 x 2 = 6) and then the addition (6 + 6 = 12), resulting in the answer of 12.
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Find the total distance traveled by a particle according to the velocity function wt) = 3t - 9 m/sec over the time interval
[1, 5]. Enter your answer as an exact fraction, if necessary. Do not include units in your answer.
The total distance traveled by the particle over the time interval [1, 5] is 12 units.
To find the total distance traveled, we need to consider both the magnitude and direction of the velocity function. Since the velocity function given is in meters per second (m/sec), the total distance traveled will be measured in meters.
To calculate the total distance, we need to consider the intervals where the velocity function changes its sign. In this case, the velocity function is linear and increasing, starting at t = 1 with a velocity of 3 m/sec. From t = 1 to t = 3, the particle moves in the positive direction, covering a distance of (3t - 9) × (t - 1) = 12 units. From t = 3 to t = 5, the particle moves in the negative direction with the same magnitude, covering a distance of (-1) × (3t - 9) × (t - 3) = 12 unit
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A basketball player has a 0.689 probability of making a free throw. If the player shoots 18 free throws, what is the probability that she makes no more than 11 of them
It is determined while using the binomial distribution that there is still a 1.145=114.5% chance that she produces no more than 11 of them.
Calculating the probabilityThere are just two possible results for each throw. Either she succeeds or she fails. The binomial probability distribution is employed to answer this issue since the probability of completing a shot is regardless of all other throws.
Binomial probability distribution-
\(P(X=x) = C_{n,x} .p^{x}(1-p)^{n-x}\)
\(C_{n,x} = n!/x! (n-x)!\)
where,
the no. of success= x
the no. of trials = n
the probability of a success on one trial = p
The probability of throwing not more than 11 will be:
P(X<11) = P(X=0) + P(X=1) +P(X=2) + P(X=3) +P(X=4) +P(X=5)+P(X=6)+P(X=7)+P(X=8)+P(X=9)+P(X=10)+P(X=11)
Where,
\(P(X=x) = C_{n,x} .p^{x}(1-p)^{n-x}\)
\(P(X=0) = C_{18,0} .(0.689)^{0}(0.311)^{18}\)≈0
\(P(X=1) = C_{18,1} .(0.689)^{1}(0.311)^{17}\)≈0
\(P(X=2) = C_{18,2} .(0.689)^{2}(0.311)^{16}\)≈0
\(P(X=3) = C_{18,3} .(0.689)^{3}(0.311)^{15}\)≈0
\(P(X=4) = C_{18,4} .(0.689)^{4}(0.311)^{14}\)≈0
\(P(X=5) = C_{18,5} .(0.689)^{5}(0.311)^{13}\)= 0.0003
\(P(X=6) = C_{18,4} .(0.689)^{6}(0.311)^{12}\)=0.0016
\(P(X=7) = C_{18,7} .(0.689)^{7}(0.311)^{11}\)=0.0062
\(P(X=8) = C_{18,8} .(0.689)^{8}(0.311)^{10}\)=0.0188
\(P(X=9) = C_{18,9} .(0.689)^{9}(0.311)^{9}\)=0.0463
\(P(X=10) = C_{18,10} .(0.689)^{10}(0.311)^{8}\)=0.9232
\(P(X=11) = C_{18,11} .(0.689)^{11}(0.311)^{7}\)=0.1488
So,
P(X<11) = P(X=0) + P(X=1) +P(X=2) + P(X=3) +P(X=4) +P(X=5)+P(X=6)+P(X=7)+P(X=8)+P(X=9)+P(X=10)+P(X=11)
=0+0+0+0+0+0.0003+0.0016+0.0062+0.0188+0.0463+0.9232+0.1488 =1.145
Therefore, she makes 1.145=114.5% probability, no more than 11 of them.
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I WILL GIVE 50 POINTS TO THOSE WHO ANSWER THESE PROBLEMS RIGHT NOOOO SCAMS PLEASE AND SHOW ME THE STEPS THIS IS DUE TOMMOROW
Answer:
1. You forgot to say what we have to do, we can't simplify or solve... so what do we do??
2. could you please rewrite on computer sorry I can't understand some
Step-by-step explanation:
Just checking if I'm right but
1. 6x² y + 14y²
2. 16x²+44
3. 26⁶ + 106⁴ -70
4. 81y² - 36
5. x² - 12 * + 27?
A company orders 8 boxed lunches from a deli for $99.60. If each boxed lunch costs
the same amount, how much do 26 boxed lunches cost?
Answer:
$318.70
Step-by-step explanation:
To find the cost of one boxed lunch, we can divide the total cost of the 8 boxed lunches by the number of boxed lunches: 99.60 / 8 = $12.45.
To find the cost of 26 boxed lunches, we can multiply the cost of one boxed lunch by the number of boxed lunches: 26 * $12.45 = $<<26*12.45=318.70>>318.70. Answer: \boxed{318.70}.
Determine whether the statement is true or false. Justify each answer or provide a counterexample when appropriate. (a) Scalar multiplication is defined between any real number and any matrix, (b) Matrix addition is defined between any two matrices. (c) For scalars r and s, and matrix A in general, r(sA)
=(rs)A
(a) True.
Scalar multiplication is defined between any real number and any matrix. In scalar multiplication, each element of the matrix is multiplied by the scalar.
This operation is valid for any real number and any matrix, regardless of their dimensions. For example, if you have a matrix A = [1 2 3 4] and a scalar r = 2, you can multiply the scalar by the matrix as follows: rA = 2 [1 2 3 4] = [2 4 6 8].
(b) True.
Matrix addition is defined between any two matrices. In matrix addition, corresponding elements of the matrices are added together. For this operation to be valid, the matrices must have the same dimensions.
If matrix A and matrix B have the same dimensions, you can add them element-wise. For example, if you have matrix A = [1 2 3 4] and matrix B = [5 6 7 8], you can add them as follows: A + B = [1 + 5 2 + 6 3 + 7 4 + 8] = [6 8 10 12].
(c) True.
The statement is true. For scalars r and s, and a matrix A, the associative property of scalar multiplication allows us to rearrange the expression r(sA) as (rs)A. Scalar multiplication is associative, which means that the order of scalar multiplication does not matter.
Therefore, r(sA) = (rs)A holds true. For example, if you have scalar r = 2, scalar s = 3, and matrix A = [1 2 3 4], you can compute the expression as follows: 2(3A) = 2 (3 [1 2 3 4]) = (2 3) [1 2 3 4] = 6 [1 2; 3 4] = [6 12 18 24]. Similarly, (2 3)A = 6 [1 2 3 4] = [6 12 18 24]. The resulting matrices are the same, confirming the truth of the statement.
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determine the interval(s) on which the vector-valued function is continuous. (enter your answer using interval notation.) r(t)
The specific interval(s) on which a vector-valued function r(t) is continuous cannot be determined without the specific function.
To determine the interval(s) on which the vector-valued function r(t) is continuous, we need to have a specific function r(t) to work with. Without the specific function, it is not possible to determine the interval(s) on which it is continuous.
In general, a vector-valued function r(t) is continuous on an interval [a, b] if and only if its component functions are continuous on [a, b]. Therefore, we need to find the interval(s) on which each component function of r(t) is continuous.
Once we have determined the interval(s) on which each component function is continuous, we can find the intersection of those intervals to get the interval(s) on which the vector-valued function r(t) is continuous.
In summary, the specific interval(s) on which a vector-valued function r(t) is continuous cannot be determined without the specific function. We need to check the continuity of each component function and take their intersection to determine the interval(s) on which r(t) is continuous.
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Write an equation in slope-intercept form of the line
The linear equation in the slope-intercept form is:
y = (-1/3)*x + 4
How to write the linear equation?Remember that if a line passes through two points (a, b) and (c, d), then the slope is given by:
slope = (d - b)/(c - a)
By looking at the graph, we can see that the points (0,4) and (3, 3), then the slope will be:
s = (3 - 4)/(3 - 0) = -1/3
And we can see that the y-intercept is y = 4 (because the line passes through the point (0,4))
Then the linear equation in the slope-intercept form is:
y = (-1/3)*x + 4
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Scientists bounce a laser beam off a mirror. It reflects at the same angle as it hits the
mirror and is detected by an instrument several inches away.
Calculate the total distance of the laser beam travels. Round to the nearest tenth if necessary.
Answer and Step-by-step explanation:
Simply use triangles to find the length of the lasers.
The first triangle consists of the sides of 12 inches, 18 inches, and the laser (which is the hypotenuse).
Use the Pythagorean theorem to solve for the hypotenuse.
(\(a^{2}+ b^{2} = c^{2}\))
\(12^{2} +18^{2} = l^{2} \\\\144 + 324 = l^{2} \\\\468 = l^{2} \\\\Square-root-both-sides\\\\\ \\\sqrt{468} = l\)
l ≈21.633
Now, we solve the other triangle.
\(9^{2} +6^{2} = l^{2} \\\\81 + 36 = l^{2} \\\\117 = l^{2} \\\\Square-root-both-sides\\\\\sqrt{117} =l\\l = 10.8167\)
Now, add those two hypotenuses.
21.6333 + 10.8167 = 32.45
32.45 rounds up to 32.5
32.5 is the total distance the laser beam travels.
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PLEASE HELP IMMEDIATELY
What is the equation of the line that passes through Point (-2, 1) and has a Slope of 1.
Answer:
\(y=x+3\)
Step-by-step explanation:
Using Point-Slope form: Y-y1=m(X-x1)
Slope(m) = 1, Point(x1,y1) = (-2,1)
y-1=1(x+2)
y=x+2+1
y=x+3
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(ps. Brainliest would be greatly appreciated lol)
Step-by-step explanation:
1.given gradient (slope) make formula of straight line
\(y = 1x + c\)
2.substitute in y and x values in order to work out c
\(1 = 1( - 2) + c\)
\(c = 3\)
3. equation of line is
\(y = 1x + 3\)
A rectangular prism has a base that is 1.5 meters by 2 meters and the prsim is 4 meters high,What is the surface area
Answer:
34
Step-by-step explanation:
the equation is 2(lw+lh+wh)
2( 1.5 x 2 + 1.5 x 4 + 2 x 4)
Answer:
Step-by-step explanation:
surface area=2lb+2(l+b)h
=2×1.5×2+2(1.5+2)×4
=6+2×3.5×4
=6+28
=34 sq. m
distribute 3x(5x-5)
a) 12x^2+8x
b) 15x^2-15x
c) 12x^2-9x
d) 15x^2+10x
Answer:
b) 15x2 - 15x
Step-by-step explanation:
Multiply 3x by 5x
Multiply 3x by - 5
I am pretty sure its B
Step-by-step explanation:
I did this last year:)
The student council at Summerfield High School is making T-shirts to sell for a fundraiser, at a price of $11 apiece. The costs, meanwhile, are $10 per shirt, plus a setup fee of $141. Selling a certain number of shirts will allow the student council to cover their costs. What will the costs be? How many shirts must be sold?
Answer:
$1551 needed to cover the costs and 141 shirts will be sold.
Step-by-step explanation:
If a shirt costs $10 and the council is selling the shirt for $1 more ($11), after selling 141 shirts, they would have made a profit of $1*141=$141. Since there is also a setup fee of $141, the profit would actually be $0. This is when the costs are covered.
C = 10s + 141 (C is cost and s in no. of shirts sold)
s = 141
C = 141*10 + 141 = 1551
Hope this helps!
Evaluate f(x) = 7x+9 at each of the following values:
f(-1)=
f(6)=
f(a)=
f(a+h)=
f(-a)=
-f(a)=