Answer:
|x - 4|
Step-by-Step explanation:
Let's say that the distance that Aisha bikes after school each day is represented by the variable "x". We want to write an absolute value equation that represents the distance that Aisha bikes, given that Carlos lives 1 mile further along the path.
If Aisha bikes directly home, then the distance she bikes is just the distance from school to her home, which is 3 miles. If she bikes all the way to Carlos' place before going home, then the distance she bikes is the total distance from school to Carlos' place and then from Carlos' place to her home. This total distance is equal to:
|x - (3 + 1)|
where "x - (3 + 1)" represents the distance from school to Carlos' place (which is equal to the distance that Aisha bikes beyond her home), and the absolute value symbols ensure that the expression inside the absolute value is positive.
Therefore, the absolute value equation that represents the distance that Aisha bikes after school each day is:
|x - 4|
P.S - Sorry if this is too wordy
Find the indefinite integral. (Remember to use absolute values where appropriate. Use C for the constant of integration.) dx x(ln x2)5
I'm assuming the integral is
\(\displaystyle \int \frac{dx}{x (\ln(x^2))^5}\)
We have
\(\ln(x^2) = 2 \ln|x| \implies (\ln(x^2))^5 = 32 (\ln|x|)^5\)
Then substituting \(y=\ln|x|\) and \(dy=\frac{dx}x\), the integral transforms and reduces to
\(\displaystyle \int \frac{dx}{x(\ln(x^2))^5} = \frac1{32} \int \frac{dy}{y^5} \\\\ ~~~~~~~~ = \frac1{32} \left(-\frac1{4y^4}\right) + C \\\\ ~~~~~~~~ = -\frac1{128(\ln|x|)^4} + C\)
which we can rewrite as
\(128 (\ln|x|)^4 = 8\cdot2^4(\ln|x|)^4 = 8 (2\ln|x|)^4 = 8 (\ln(x^2))^4\)
and so
\(\displaystyle \int \frac{dx}{x (\ln(x^2))^5} = \boxed{-\frac1{8(\ln(x^2))^4} + C}\)
87.20 20] Kelly made two investments totaling $5000. Part of the money was invested at 2% and the rest at 3%. In one year, these investments earned $129 in simple interest. How much was invested at each rate?
$2100 was invested at 2% and $2900 ($5000 - $2100) was invested at 3%.
Let x be the amount invested at 2% and y be the amount invested at 3%. We know that x + y = $5000 and the interest earned is $129. We can use the formula for simple interest, I = Prt, where I is the interest earned, P is the principal (or initial amount invested), r is the interest rate, and t is the time period.
Thus, we have:
0.02x + 0.03y = $129 (1)
x + y = $5000 (2)
We can solve for one of the variables in terms of the other from equation (2), such as y = $5000 - x. Substituting this into equation (1), we get:
0.02x + 0.03($5000 - x) = $129
Simplifying and solving for x, we get:
0.02x + $150 - 0.03x = $129
-0.01x = -$21
x = $2100
Therefore, $2100 was invested at 2% and $2900 ($5000 - $2100) was invested at 3%.
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what is the nth term rule of the linear sequence below 15, 7, -1, -9, -17
Answer:
8n+7
Step-by-step explanation:
Given points A(-1,4) and B(x,7), determine the value(s) of x if AB=5cm
The value of x is either 3 or -5 based on the distance formula.
What is a co-ordinate system?
In pure mathematics, a coordinate system could be a system that uses one or additional numbers, or coordinates, to uniquely confirm the position of the points or different geometric components on a manifold like euclidean space.
Main body:
according to question
Given points A(-1,4) and B(x,7)
Also AB = 5 cm
Formula of distance = \(\sqrt{(y1-y2)^{2}+(x1 -x2)^{2} }\)
here by using points ,
5 = \(\sqrt{(x+1)^{2} +(7-4)^{2} }\)
taking square on both side ,'
25 = \((x+1)^{2} +3^{2}\)
25-9 = (x+1)²
16 = (x+1)²
taking square root on both sides,
x+1= ±4
x = 4-1 = 3 or x = -4-1 = -5
Hence value of x is either 3 or -5.
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A coin is tossed three times. Find the probability of the following events:
(1) A: getting at least two heads
(2) B: getting exactly two heads
(3) C: getting at most one head
Given, the coin is tossed three times.
Sample space: {HHH, HTH, THH, TTH, HHT, HTT, THT, TTT}
Number of positive outcomes = 8
Probability of
(1) A: Getting at least two heads
P(A) = P(Getting 3 heads) + P(Getting 2 heads)
= \(\frac{3}{8} +\frac{1}{8}\) Since, P(event) = \(\frac{No. of favourable outcomes}{Total no. of possible outcomes}\)
P(A) = \(\frac{1}{2}\)
(2) B: Getting exactly two heads
P(B) = \(\frac{3}{8}\)
(3) C: Getting at most one head
P(C) = P(Getting zero head) + P(Getting 1 head)
= \(\frac{1}{8} + \frac{3}{8}\)
= \(\frac{4}{8}\)
P(C) = \(\frac{1}{2}\)
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please help me as soon as possible with this
Part A: The student was supposed to divide before subtracting
Part B: The student was supposed to simplify the parentheses before finding the exponents
Part C: The simplification of the expression gives -16.
From the question, we are to simplify the given expression
The given expression is
(∛64 - 16 ÷ 2)(2 - 4)²
Part A:
The mistake the student made was not applying the PEMDAS rule
P - Parentheses
E - Exponent
M - Multiplication
D - Division
A - Addition
S - Subtraction
Since division comes before subtraction, the student was supposed to divide before subtracting
Part B:
The student mistake was trying to simplify the exponent before simplifying the parentheses. The student was supposed to simplify the parentheses before finding the exponents.
Part C:
Simplifying the expression
(∛64 - 16 ÷ 2)(2 - 4)²
Simplify the cube root
(4 - 16 ÷ 2)(2 - 4)²
Divide
(4 - 8)(2 - 4)²
Simplify the parenthesis
(-4)(-2)²
Simplify the exponent
(-4)(4)
Evaluating
-16
Hence, the simplification of the expression gives -16.
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1
Apply the Linear Programming Theorem and interpret the results.
2) Answer the questions below for the following situation:
For a certain lawn, a landscaping contractor plans to use the least expensive combination of two brands of
fertilizer. A package of Brand X costs $16 and contains 12 oz of phosphates and 10 oz of nitrates. A package of
Brand Y costs $7 and contains 10 oz of phosphates and 5 oz of nitrates. The lawn requires at least 60 oz of
phosphates and 40 oz of nitrates. Which combination of the two brands should be used?
a. Translate the constraints into a system of inequalities.
b. Graph the system and label the vertices of the feasible set.
c. Apply the Linear Programming Theorem and interpret the results.
X
The minimum cost will be at (2.5 , 3) and the minimum cost be $25.
Given, a landscaping contractor plans to use the least expensive combination of two brands of fertilizer.
A package of Brand X costs $16 and contains 12 oz of phosphates and 10 oz of nitrates.
A package of Brand Y costs $7 and contains 10 oz of phosphates and 5 oz of nitrates.
The lawn requires at least 60 oz of phosphates and 40 oz of nitrates.
Let the number of Brand X packages be, x
the number of Brand Y packages be, y
According to the question,
12x + 10y ≥ 60 = 6x + 5y ≥ 30
10x + 5y ≥ 40 = 2x + y ≥ 8
x ≥ 0
y ≥ 0
Z = 16x + 7y
On solving the equations, we get
6x + 5y = 30
6x + 3y = 24
On subtracting, we get
2y = 6
y = 3
and x = 2.5
So, minimum cost will be at (2.5 , 3) and the minimum cost be
Z = 16(2.5) + 7(3)
Z = 4 + 21
Z = 25
Hence, the minimum cost will be at (2.5 , 3) and the minimum cost be $25.
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Find the value of x. geometry
Answer:
21 or 26
Step-by-step explanation:
Solve the equation A = bh for b.
Answer:
b=A/h
Step-by-step explanation:
To isolate b, you need to divide both sides by h. Therefore:
A=bh
b=A/h
Hope this helps!
Answer:
A/h =b
Step-by-step explanation:
A = bh
Divide each side by h
A/h = bh/h
A/h =b
Respond to the following in a minimum of 175 words: Models help us describe and summarize relationships between variables. Understanding how process variables relate to each other helps businesses predict and improve performance. For example, a marketing manager might be interested in modeling the relationship between advertisement expenditures and sales revenues. Consider the dataset below and respond to the questions that follow: Advertisement ($'000) Sales ($'000) 1068 4489 1026 5611 767 3290 885 4113 1156 4883 1146 5425 892 4414 938 5506 769 3346 677 3673 1184 6542 1009 5088 Construct a scatter plot with this data. Do you observe a relationship between both variables? Use Excel to fit a linear regression line to the data. What is the fitted regression model? (Hint: You can follow the steps outlined in Fitting a Regression on a Scatter Plot on page 497 of the textbook.) What is the slope? What does the slope tell us?Is the slope significant? What is the intercept? Is it meaningful? What is the value of the regression coefficient,r? What is the value of the coefficient of determination, r^2? What does r^2 tell us? Use the model to predict sales and the business spends $950,000 in advertisement. Does the model underestimate or overestimates ales?
Yes, there is a relationship between advertisement expenditures and sales revenues. The fitted regression model is: Sales = 1591.28 + 3.59(Advertisement).
1. To construct a scatter plot, plot the advertisement expenditures on the x-axis and the sales revenues on the y-axis. Each data point represents one observation.
2. Use Excel to fit a linear regression line to the data by following the steps outlined in the textbook.
3. The fitted regression model is in the form of: Sales = Intercept + Slope(Advertisement). In this case, the model is Sales = 1591.28 + 3.59
4. The slope of 3.59 tells us that for every $1,000 increase in advertisement expenditures, there is an estimated increase of $3,590 in sales.
5. To determine if the slope is significant, perform a hypothesis test or check if the p-value associated with the slope coefficient is less than the chosen significance level.
6. The intercept of 1591.28 represents the estimated sales when advertisement expenditures are zero. In this case, it is not meaningful as it does not make sense for sales to occur without any advertisement expenditures.
7. The value of the regression coefficient, r, represents the correlation between advertisement expenditures and sales revenues. It ranges from -1 to +1.
8. The value of the coefficient of determination, r^2, tells us the proportion of the variability in sales that can be explained by the linear relationship with advertisement expenditures. It ranges from 0 to 1, where 1 indicates that all the variability is explained by the model.
9. To predict sales when the business spends $950,000 in advertisement, substitute this value into the fitted regression model and solve for sales. This will help determine if the model underestimates or overestimates sales.
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16+6×(4 exponent -1)
Answer:
17.5
Step-by-step explanation:
Please answer correctly! I will mark you Brainliest!
Answer:
4.1 inches
I would appreciate Brainliest, but no worries.
Answer:
6
Step-by-step explanation:
the formula for the sphere's volume is \(\frac{4}{3} *\pi *r^3\)
so when you set that equal to 288\(\pi\), you get 6 as the radius
List the sample space for rolling a fair seven-sided die.
S = {1, 2, 3, 4, 5, 6, 7}
S = {1, 2, 3, 4, 5, 6, 7, 8}
S = {1}
S = {7}
The sample space for rolling a fair seven-sided die is S = {1, 2, 3, 4, 5, 6, 7}.
Given that,
A fair seven sided die is rolled.
We have to find the sample space of the rolling.
A sample space is a set of all the possible outcomes in a random experiment. It is usually denoted by the letter, S.
The subset of the sample space are events.
The die has the numbers marked from 1 to 7.
So when we roll the die,
The possible numbers are 1, 2, 3, 4, 5, 6, 7
Sample space = {1, 2, 3, 4, 5, 6, 7}
Hence the sample space is {1, 2, 3, 4, 5, 6, 7}.
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Answer all or none! Ty!
determine the kinetic energy of a 1000-kg roller coaster car that is moving with a soeed if 20.0 m/s.
200000J/200KJ
Step-by-step explanation:
using k.e=1/2(mv2)
k.e=1×1000×20²/2
k.e=400000/2
k.e=200000J/200KJ
A groundskeeper needs grass seed to cover a circular field, 390 feet in diameter. A store sells 50-pound bags of grass seed. One pound of grass seed covers about 400 square feet of field. What is the smallest number of bags the groundskeeper must buy to cover the circular field? Explain or show your reasoning.
Answer:
The smallest number of bags the groundskeeper must buy to cover the field is 165 bags.
Given:
A groundskeeper needs grass seed to cover a circular field, 290 feet in diameter.
A store sells 50 pound bags of grass seed. One pound of grass seed covers about 400 square feet of field.
To find:
The smallest number of bags the groundskeeper must buy to cover the field.
Solution:
Diameter of the field = 290 feet, radius = 145 feet
Area of the circular field = \pi r^{2}=πr
2
= \pi \times 145 \times 145π×145×145 = 66018.5
No of bags to be brought = \frac{66018.5}{400}
400
66018.5
= 165 bags.
Step-by-step explanation:
first answer pic
second answer
3 2/3 + 4 + 5 1/3 properties of numbers
Answer:
13
Step-by-step explanation:
3 2/3 + 4 + 5 1/3
2/3 + 1/3 = 1
5 + 4 + 3 = 12
12 + 1 = 13
Hope this helped!
Mark Brainleist if you can please!
An angle measures 4° more than the measure of its complementary angle. What is the measure of each angle?
Answer:
43° and 47°
Step-by-step explanation:
→ Let one angle be x and second angle be x + 4°
As we know the sum of complementary angle is 90°
So,
x + x + 4° = 90°
2x + 4° = 90°
x = 86°/2
x = 43°
Therefore , 1st angle is 43° and 2nd angle is 47°
Answer:
\(\huge\boxed{\sf 43 \textdegree, \ 47 \textdegree}\)
Step-by-step explanation:
Let the first angle be x, and the second angle be x + 4
Given that, they are complementary angles, they add up to 90 degrees.
x + x + 4 = 90
2x + 4 = 90
Subtract 4 to both sides
2x = 90 - 4
2x = 86
Divide 2 to both sides
x = 86/2
x = 43°
The second angle:
= x + 4
= 43 + 4
= 47°
\(\rule[225]{225}{2}\)
Write as an algebraic equation
A. the quotient of v and 3 is 20 less than v
B. Three times the sum of a number and 4 is 28
A. \(\frac{v}{3} = 20 -v\\\)
B. \(3(n +4) = 28\)
Which property is shown in the matrix addition below?
0 -5.5
0
5.5
0
0
6
19.4 +-6
-6 -19.4
0
0
0
0
0
0
0 0
Answer:
additive inverse properties
The ratio of lemon sweets to strawberry sweets in a tub is 5:3 there are 120 lemon sweets in the tub how many strawberry sweets are in the tub ?
200 is your response.
Step-by-step explanation:
4 3/7 + 6 1/5 = ?
Please EXPLAIN!!!
I'm too lazy and when I lazy I not so smart ;)
Answer:
Welp here is the answer to your question, 372/35 in exact form. in mixed number form it is 10 22/35
hey! if you have time can u solve this for me
Answer:
I'm guessing C
Step-by-step explanation:
I don't think this is the correct way to answer it. But I litterly rotated it in my brain and got 7.5....
The scale of a map is 1/2 inch = 30 miles. If 2 cities are 2 inches apart on the map, how many miles apart are they from eachother?
Answer:
120 miles
Step-by-step explanation:
Answer:
120
Step-by-step explanation:
2 divided by .5 = 4 ( 4 half’s equal 2 )
4 times 30 miles = 120 ( each for represents 30 )
How could I simplify it, could someone show me step by step?
By simplifying the expression (-4-√7)² we get the value as 23+8√7 in decimals we get 44.12.
Given that,
The expression is (-4-√7)²
We need to find the value and simplify the expression.
Take the expression.
(-4-√7)²
We know that (a+b)²=a²+2ab+b²
The expression is in the form of (a+b)² substitute the formula.
(-4)²+2(-4)(-√7)+(-√7)²
Now do the square
16+2(-4)(-√7)+7
Now do the multiplication.
16+8√7+7
Now do the addition.
23+8√7
We can write the √7 value
23+8(2.64)
Multiply 8 and 2.64
23+ 21.12
Now adding
44.12
Therefore, By simplifying the expression (-4-√7)² we get the value as 23+8√7 in decimals we get 44.12.
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A graphical plot with sales on the Y axis and time on the X axis is a
a. Scatter diagram.
b. Trend projection.
c. Radar chart.
d. Line graph.
e. Bar chart.
A graphical plot with sales on the Y axis and time on the X axis is a:
a. Scatter diagram.
What is Scatter diagram?Using a single variable on each axis, the scatter diagram plots pairings of numerical data in an effort to identify any relationships between them. A line or curve will be formed by the points if the variables are correlated. The points will hug the line closer the more highly correlated the data is. You may also visualise the strength of any relationship. If the researcher believes there may be a correlation, a line of greatest fit can also be drawn on the graph.
Data points are shown on a horizontal and vertical axis using scatter plots in an effort to demonstrate the degree to which one variable is influenced by another.
Thus, correct option: a
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Find the area under the standard normal curve to the left of z=2.06. round your answer to four decimal places.
The area under the standard normal curve to the left of z = 2.06 is approximately 0.9803.
The normal distribution function, also known as the Gaussian distribution or bell curve, is a probability distribution that is symmetric, bell-shaped, and continuous. It is defined by two parameters: the mean (μ) and the standard deviation (σ).
The normal distribution is widely used in statistics and probability theory due to its many desirable properties and its applicability to various natural phenomena. It serves as a fundamental distribution for many statistical methods, hypothesis testing, confidence intervals, and modeling real-world phenomena.
To find the area under the standard normal curve to the left of z = 2.06, you can use a standard normal distribution table or a calculator with a normal distribution function. The standard normal distribution is a normal distribution with a mean of 0 and a standard deviation of 1.
Using a standard normal distribution table, the area to the left of z = 2.06 can be found by looking up the corresponding value in the table. However, since the standard normal distribution table typically provides values for z-scores up to 3.49, we can approximate the area using the available values.
The closest value in the standard normal distribution table to 2.06 is 2.05. The corresponding area to the left of z = 2.05 is 0.9798. This means that approximately 97.98% of the area under the standard normal curve lies to the left of z = 2.05.
Since z = 2.06 is slightly larger than 2.05, the area to the left of z = 2.06 will be slightly larger than 0.9798.
Therefore, rounding the answer to four decimal places, the area under the standard normal curve to the left of z = 2.06 is approximately 0.9803.
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Sydney is deciding between two parking garages. Garage A charges an initial fee of
$12 to park plus $4 per hour. Garage B charges an initial fee of $7 to park plus $5 per
hour. Let A represent the amount Garage A would charge if Sydney parks for t hours,
and let B represent the amount Garage B would charge if Sydney parks for t hours.
Write an equation for each situation, in terms of t, and determine the hours parked,
t, that would make the cost of each garage the same.
The equation for Garage A can be expressed as A = 12 + 4t, and the equation for Garage B as B = 7 + 5t.
Write an equation for each situation?In order to determine the hours parked, t, that would make the cost of each garage the same, we first set the two equations equal to each other, A = B.Then, we can solve for t by subtracting 7 from both sides of the equation and dividing by -1.This gives us t = -5. Since we cannot park for a negative number of hours, this tells us that the cost of each garage will never be the same.The equation for Garage A is A = 12 + 4t, while the equation for Garage B is B = 7 + 5t. To find the number of hours, t, that would make the cost of each garage the same, we must set A = B and solve for t.Therefore, 12 + 4t = 7 + 5t, and subtracting 7 from both sides of the equation yields 5t = 5, and t = 1. Thus, if Sydney parks for 1 hour, the cost of both Garage A and Garage B would be the same.A = 12 + 4t
B = 7 + 5t
12 + 4t = 7 + 5t
4t - 5t = 7 - 12
-t = -5
t = 5 hours
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Please help! Please and thank you
Answer:
4
Step-by-step explanation:
Length time width times high , 8x8=16 square rooted equals 4
On a trip to Oregon, Sabina bought a small stone in the shape of a square pyramid as a souvenir. Determine the volume of the stone. Round to the nearest tenth.
Question 3 options:
the volume of the stone 4. 5 in3
the volume of the stone 6 in3
the volume of the stone 6. 75 in3
the volume of the stone 1. 5 in3
The correct option is: the volume of the stone 6 in3
To find the volume of a square pyramid, we use the formula:
V = (1/3) * B * h
where B is the area of the base and h is the height of the pyramid. Since the stone is in the shape of a square pyramid, its base is a square.
Let's say that the length of one side of the square base is x. Then, the area of the square base is:
B = x^2
Since the stone is in the shape of a square pyramid, all four triangular faces are congruent. Therefore, the height of the pyramid can be found by multiplying the slant height of one of the triangular faces by a factor of 1/2. Let's say that the slant height of each triangular face is y.
Then, the height of the pyramid is:
h = (1/2) * y
The volume of the stone is:
V = (1/3) * B * h
V = (1/3) * x^2 * [(1/2) * y]
V = (1/6) * x^2 * y
We're not given any specific measurements for the sides or heights of the stone, so we can't calculate an exact volume. However, if we assume that the length of one side of the base is 3 inches and the slant height is 4 inches, we can calculate the volume as follows:
V = (1/6) * (3 in)^2 * (4 in)
V = 6 in^3
Therefore, the correct option is: the volume of the stone 6 in3
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