Answers
Answer:
you can place a point on any number to the left of -1 on the number line, just don't place one on it because that would be equal to.
Related Questions
Gina ran two laps around the track in 99 seconds. How long did it take her to run each lap if she ran the first one 8.5 meters per second and the second lap at meters per second
Answers
Question 4 of 10
Which of the following could be the ratio between the lengths of the two legs
of a 30-60-90 triangle?
Check all that apply.
□A. √2:√2
B. 15
□ C. √√√√5
□ D. 12
DE √3:3
OF. √2:√5
←PREVIOUS
SUBMIT
Answers
The ratios that could be the lengths of the two legs in a 30-60-90 triangle are √3:3 (option E) and 12√3 (option D).
In a 30-60-90 triangle, the angles are in the ratio of 1:2:3. The sides of this triangle are in a specific ratio that is consistent for all triangles with these angles. Let's analyze the given options to determine which ones could be the ratio between the lengths of the two legs.
A. √2:√2
The ratio √2:√2 simplifies to 1:1, which is not the correct ratio for a 30-60-90 triangle. Therefore, option A is not applicable.
B. 15
This is a specific value and not a ratio. Therefore, option B is not applicable.
C. √√√√5
The expression √√√√5 is not a well-defined mathematical operation. Therefore, option C is not applicable.
D. 12√3
This is the correct ratio for a 30-60-90 triangle. The ratio of the longer leg to the shorter leg is √3:1, which simplifies to √3:3. Therefore, option D is applicable.
E. √3:3
This is the correct ratio for a 30-60-90 triangle. The ratio of the longer leg to the shorter leg is √3:1, which is equivalent to √3:3. Therefore, option E is applicable.
F. √2:√5
This ratio does not match the ratio of the sides in a 30-60-90 triangle. Therefore, option F is not applicable. So, the correct option is D. 1 √2.
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Which is the graph of the linear inequality 2x-3y < 12?
Answers
Answer:
First, transform the given equation into the slope-intercept form, y = mx + b.
2x - 3y < 12
3y > 2x - 12
y > \(\frac{2}{3}\)x - 4
Since the equation is y > \(\frac{2}{3}\)x - 4, first draw the graph of y = \(\frac{2}{3}\)x - 4 with a dotted line (because it is >, not ≥) and shade the area above the dotted line.
- 3 2/7 - (- 5/7). Answer as a mixed number in simplest form
Answers
Answer:
-18/7
Step-by-step explanation:
The cost for Rhoda to operate her car for one month was at least $190. The cost for gas and repairs was one half the amount of the monthly payment on the car loan.
Answers
The inequality that can be used to show the amount of the monthly payment on car loan that Rhoda would have to do is p + p/2 ≥ 190
How to solve for the inequalityThe cost is said to be at least 190 dollars to operate the car for a month period.
let p = amount of payment on loan
The question says that the amount on gas and repairs is half of p
Hence this can be formed as total cost =
p + p/2 ≥ 190
The cost for Rhoda to operate her car for one month was at least $190. The cost for gas and repairs was an additional one-half of her monthly payment. Which inequality can be used to find the amount of the monthly payment on the car loan (p)?
answer choices
p + p/2 ≤ 190
p + p ÷ (1/2) ≥ 190
p + (1/2) ÷ p ≥ 190
p + p/2 ≥ 190
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environmentalists want to estimate the percent of trees in a large forest that are infested with a certain beetle. the environmentalists will select a random sample of trees to inspect. which of the following is the most appropriate method for creating such an estimate? responses a two-sample z -interval for a population proportion a two-sample z -interval for a population proportion a one-sample z -interval for a sample proportion a one-sample z -interval for a sample proportion a one-sample z -interval for a population proportion a one-sample z -interval for a population proportion a two-sample z -interval for a difference between sample proportions a two-sample z -interval for a difference between sample proportions a two-sample z -interval for a difference between population proportions
Answers
A two-sample z-interval for a population proportion. This method is used to create an estimate of the percentage of trees in a large forest that are infested with a certain beetle by taking a random sample of trees to inspect.
A two-sample z-interval for a population proportion is the most appropriate method for creating an estimate of the percent of trees in a large forest that are infested with a certain beetle. This method involves taking a random sample of trees from the forest and inspecting them to determine the proportion of infested trees. The sample size chosen should be large enough to provide a reliable estimate of the proportion of trees in the population that are infested. A two-sample z-interval is then used to calculate a confidence interval for the population proportion, which can be used to estimate the overall percent of trees in the forest that are infested with the beetle. This method can provide a reliable estimate of the percent of trees in the forest that are infested with the beetle, allowing environmentalists to make informed decisions regarding management of the forest.
What are the solutions of x^2-3x+3=0
Answers
Therefore the solution to this equation is imaginary given by x = \(\rm \dfrac { 3 \pm \sqrt{-3}}{2}\)
What is a Quadratic Equation ?A Quadratic equation is an equation that can be written in the form of
ax² +bx+c = 0
The solution of the given quadratic equation
x² -3x +3 = 0
the roots of the equation is given by
\(\dfrac { -b \pm \sqrt{b^2 -4ac}}{2a}\)
here a = 1 , b = -3 , c = 3
Substituting the values
The solution is
\(\rm \dfrac { 3 \pm \sqrt{(-3)^2 -4*1 *3}}{2}\)
Therefore the solution to this equation is imaginary
given by
x = \(\rm \dfrac { 3 \pm \sqrt{-3}}{2}\)
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Construct both a 98% and a 80% confidence interval for B₁. B₁=46, s=5.7, SSzz = 57, n = 12 98%:
Answers
To construct a 98% confidence interval for B₁, we can use the t-distribution since the sample size is small (n = 12).
Given the sample mean (B₁ = 46), sample standard deviation (s = 5.7), and sum of squares (SSzz = 57), we can calculate the confidence interval.
The formula for a confidence interval is:
Confidence Interval = Sample Mean ± (Critical Value * Standard Error)
For a 98% confidence level and n = 12, the critical value is approximately 2.681 (obtained from a t-distribution table).
The standard error is calculated as the sample standard deviation divided by the square root of the sample size (s / √n).
Plugging in the values:
Standard Error = 5.7 / √12 ≈ 1.647
Confidence Interval = 46 ± (2.681 * 1.647)
Therefore, the 98% confidence interval for B₁ is approximately (42.21, 49.79).
In conclusion, we can be 98% confident that the true value of B₁ falls within the range of 42.21 to 49.79 based on the given sample data.
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with one method of a procedure called acceptance sampling a sample of items is randomly selected without replacement and the entire batch is accepted if every item is in the sample is okay a company is just manufactured 1,938 CDs and 316 are defective A) if there are 316 defective CDs then that means there were ___ good CDs produced B) what is the probability that all 4 CDs are good if you are selecting without replacement C) now in certain circumstances we can use the 5% guideline for cumbersome calculations to treat events that are really dependent as independent instead so that calculations are easier and this problem here can we implement the 5% guideline? A. No, because 4 CDs chosen out of 1938 is not less than 5% B. yes, because 4 CDs chosen out of 1938 is more than 5%C. yes, because four CDs chosen out of 1938 is less than 5%D. no, because 316 defective CDs out of 1938 is not less than 5%E. no, because 1,622 good CDs out of 1938 is not less than 5%D) assuming that you can treat this situation as independent disregarding your answer to part C to utilize that 5% guideline what is the probability that all 4 CDs are good? E) assuming that you can treat the situation as independent regardless of your answer for part C which of the answers above part D or part B is the best to use? A. answer choice D is best because sampling with the replacement is the most effective way to conduct acceptance samplingB. answer choice DS best to use because the 5% guideline is very accurateC. answer choice B is the best because part D was calculated with the 5% guideline meaning it is just an estimateD. is your choice B is best because it utilizes the 5% guideline
Answers
Since we have that 316 CDs are defective from 1938, then:
\(1938─316=1622\)A) we have that 1622 good CDs were produced.
B) If A is the probability that all 4 cds are good if you are selecting without replacement is:
\(\begin{gathered} P(A)=(\frac{1622}{1938})(\frac{1621}{1937})(\frac{1622}{1936})(\frac{1619}{1935})=0.490372393 \\ P(A)=0.4904 \end{gathered}\)C)In this case, we can use the 5% guideline, since the sample size is 4 and it's less than the 5% of 1938 (option C).
D) We can check this by calculating the probability assuming each selection is with replacement:
\(\begin{gathered} P(A)=(\frac{1622}{1938})^4=0.490668648 \\ P(A)=0.4907 \end{gathered}\)Then, the probability that all 4 CDs are good assuming this situation is independent is 0.4907
E)We have seen that both probabilities are almost the same, but in most cases, it's best to use the 5% guideline. Therefore, the answer D is the best choise because the 5% guideline is very accurate in this case (otpion B)
consider the following rectangle. how can we express the area of the rectangle in terms of the variable x? 9 x squared plus 9 x plus 11 20 x squared plus 9 x plus 11 9 x squared plus 47 x plus 24 20 x squared plus 47 x plus 24
Answers
Given a rectangle with the length of x+2 and width of 3x - 1. The area of a rectangle is given by the product of the length and width.
Thus, the area of this rectangle can be found as follows:Area = (x+2)(3x-1
Area = 3x^2 - x + 6x - 2
Area = 3x^2 + 5x - 2
Hence, we can express the area of the given rectangle in terms of the variable x as 3x^2 + 5x - 2. Therefore, the correct option is none of the provided options.
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A car is purchased for $23,750 and it depreciates in value at a 9% rate every year. Write the equation for this exponential function and determine the worth of the vehicle in 3 years.
Answers
Answer:
f(3) = 23,750(0.09)^3 = 6412.5
Step-by-step explanation:
first to answer get 100 points and brainiest. Serious by the way
Answers
Answer: What can I say execpt your welcome
Step-by-step explanation: Get nae naed
Answer:
Ok then but seriously this is meant as a school homework site it isnt just for friends or things you want you may get banned for things such as this
Step-by-step explanation:
Scooter rental company A charges an initial fee of $3 plus $1.15 for every hour. Scooter rental company B charges $1.75 for every hour. A customer finds that after h hours, the scooter rental companies will cost the same.
Which equation represents this situation?
1.75h+1.15h=3
1.75h=3−1.15h
1.15h=3+1.75h
1.15h+3=1.75h
Answers
Answer:
This is a little late but it's D. 1.15h+3=1.75h
Step-by-step explanation:
I took this test
Use Horner's algorithm to find p(4), where p(z) = 325 – 724 – 57'+z? -- 8z +2 2.
Answers
Using Horner's algorithm, it is found that p(4) = 946.
Horner's algorithm is a method used to evaluate a polynomial at a given value of x. It simplifies the process of calculating the value of the polynomial by reducing the number of calculations needed. To use Horner's algorithm to find p(4), where p(z) = 3z^5 – 7z^4 – 5z^3+z^2- 8z +2, follow these steps:
p(4) = 3(4)^5 – 7(4)^4 – 5(4)^3+(4)^2- 8(4) +2
p(4) = 3(4)^5 – 7(4)^4 – 5(4)^3+(4)^2- 8(4) +2
p(4) = 3(1024) – 7(256)– 5(64) + 16 - 32 +2
p(z) = 3072– 1792 – 320 + 16 - 30
p(z) = 1280 – 320 - 14
p(z) = 960 - 14
p(z) = 946
Therefore, p(4) = 946.
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For every 7 push-ups Dulce can do, Sara can do 6. If Ducle did 28 push-ups during gym class, how many push-ups did sara do?
Answers
The number of push-ups did sara did during gym class if for every 7 push-ups Dulce can do, Sara can do 6 is 24 push ups.
How to solve ratio?Number of push ups Dulce can do : number of push ups Sara can do
Let
number of push ups Sara does = x
7 : 6 = 28 : x
7/6 = 28/x
cross product
7 × x = 28 × 6
7x = 168
divide both sides by 7
x = 168/7
x = 24
Therefore, Sara does 24 push ups during the gym class.
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The discriminant value of a quadratic function is 3. How many REAL solutions does the function have?
a.) 3
b.) 1
c.) 2
d.) 0
Answers
Answer:
This function would have two distinct real roots.
Step-by-step explanation:
Consider a quadratic function \(f(x) = a\, x^{2} + b\, x + c\).
The determinant of this function would be \(\Delta = b^{2} - 4\, a\, c\).
The (only) two roots of this quadratic function would be:
\(\begin{aligned} x_{1} = \frac{-b - \sqrt{\Delta}}{2\, a}\end{aligned}\), and
\(\begin{aligned} x_{2} = \frac{-b + \sqrt{\Delta}}{2\, a}\end{aligned}\).
Because of the square root \(\sqrt{\Delta}\) in the two expressions, \(x_{1}\) and \(x_{2}\) would take real values if and only if \(\Delta \ge 0\) (determinant is nonnegative.) If \(\Delta < 0\), this quadratic function would not have any real root.
Since the only difference between the two roots \(x_{1}\) and \(x_{2}\) is \((1/a)\, \sqrt{\Delta}\), these two roots would repeat one another if \(\Delta = 0\) (determinant is zero.)
Otherwise, if \(\Delta > 0\), this quadratic function would have two distinct real roots.
What is the product of:
7x4.5x6
Answers
Answer:
189
Step-by-step explanation:
:)
Answer:
189
Step-by-step explanation:
mulitply 7 by 4.5= 31.5
31.5 x6=189
find the sum of the arithmetic series shown below 10+9+8… +(-255)
Answers
Answer:
−228
Step-by-step explanation:
10+9+8+−255
Add 10 and 9 to get 19.
19+8−255
Add 19 and 8 to get 27.
27−255
Subtract 255 from 27 to get −228.
−228
Use the drop-down menus to complete each equation so the statement about its solution is true. No Solutions 6x – 3x + 4 – 2x ={ ? } x + (?)
One Solution 6x – 3x + 4 – 2x =(?) x + [ ? )
Infinitely Many Solutions 6x – 3x + 4 – 2x =(?)x +?
fill in the question marks
Answers
Answer:
Simplify the expression.
x
+
4
Step-by-step explanation:
What is the rate of change in this graph?
Answers
The rate of change in the given graph is 21/4.
The rate of change defines the speed of a variable changes over another variable. On the given graph, we can calculate the rate of change using the formula:
Rate of change = Δy / Δx
To calculate the rate of change of the given graph, we need to identify 2 points first. We take:
(0, 0)
(4, 21)
Rate of change = Δy / Δx
Rate of change = y₂ - y₁
x₂ - x₁
Rate of change = 21 - 0
4 - 0
Rate of change = 21/4
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The path that Voyager 2 made around Jupiter followed one branch of a hyperbola. Find an equation that models the path of Voyager 2 around Jupiter, given that a=2,184,140 km and c=2,904,906.2 km . Use the horizontal model.
b. How can you use the given information to find the information you need?
Answers
a) The equation that models the path of Voyager 2 around Jupiter is (x/2184140)² - (y/2904906.2)² = 1.
b) Substitute the given information in the standard form of equation (x/a)² - (y/c)² = 1, to get the required equation.
The equation for a hyperbola in the horizontal form is given by:
(x/a)² - (y/c)² = 1
Substituting the given values of a and c, we get:
(x/2184140)² - (y/2904906.2)² = 1
The path that Voyager 2 made around Jupiter is represented by the equation:
(x/2184140)² - (y/2904906.2)² = 1
b) The given information a=2,184,140 km and c=2,904,906.2 km substitute in standard form of equation (x/a)² - (y/c)² = 1, so we get the information we needed.
Therefore,
a) The equation that models the path of Voyager 2 around Jupiter is (x/2184140)² - (y/2904906.2)² = 1.
b) Substitute the given information in the standard form of equation (x/a)² - (y/c)² = 1, to get the required equation.
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A car travels at 40 miles per hour. Deb wrote the equation y=40x. Deb then graphed the equation and noticed that the point (3, 120) was on the line. What does this point represent?
Answers
Answer:
the time spent
Step-by-step explanation:
Which is greater 12.5 or |-13|?
Answers
From the question, we are asked to find which is great between 12.5 or |-13|
recall:
|-13|
The absolute value is the distance between a number and zero. The distance between -13 and 0 is 13.
The absolute symbol makes any number positive.
So, |-13| is the greater because |-13| = 13.
So, between 12.5 and |-13|, |-13| is greater since it is same as 13.
At the school 460 of the students walk to school.
1The number of students who take public transit is 20% of the number of students who walk. How many students take public transit?
2The number of students who bike to school is 5% of the number of students who walk. How many students bike to school
3The number of students who bike to school is 5% of the number of students who walk. How many students bike to school?
Answers
Answer:
92 public transit
23 bike
Step-by-step explanation:
460 / 5 = 92
460 / 20 = 23
Two different cross sections are taken parallel to the base of a three-dimensional figure. The two cross sections are the same shape, but are not congruent. Which could be the three-dimensional figure?.
Answers
The geometric figures which could be this three-dimensional figure are:
ConeTriangular pyramidSquare pyramidWhat is a cross section?A cross section can be defined as an exposed surface or shape that is formed when a cut is made through a three-dimensional figure.
In this scenario, the geometric figures which could be this three-dimensional figure are:
Cone: when cut horizontally, its cross section would always form a circle of different sizes.Triangular pyramid: when cut horizontally, its cross section would always form a triangle of different sizes.Square pyramid: when cut horizontally, its cross section would always form a square of different sizes.Read more on here: https://brainly.com/question/2459472
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(q14) What should the value of f(u) be, in
Answers
The function f(u) is defined as follows:
C. f(u) = csc²(u).
How to obtain the function f(u)?The integral in the context of this problem is defined as follows:
\(\int f(u) du = -\cot{u} + K\)
This means that when we integrate f(u), the result is the negative cotangent plus the constant.
The derivative is the inverse operation of the integral, hence:
f(u) = d/du(-cot(u) + K).
The derivative of a constant is of zero, hence the function f(u) is obtained as follows:
f(u) = -d/du(cot(u))
f(u) = -(-csc²(u))
f(u) = csc²(u).
Meaning that option C is the correct option in the context of this problem.
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x + y = -3
y= 2
Solve
Answers
Answer:
x=-5
Step-by-step explanation:
x+2=-3
x+2-2=-3-2
x=-5
im in algebra two so you can trust my answer. happy holidays and stay safe!
x+y=-3
x+2=-3
x+2+-2=-3+-2 (add -2 to both sides)
Answer:
x=-5
Anne surveyed the 12 slowest runners in PE, class about their favorite sports,
Is this sample of the students in the PE, class likely to be biased?
Answers
is the 4 exersises correct?????please
Answers
Answer: You are 100% correct. Nice work.
Explanation:
A congruence statement like \(\triangle GIH \cong \triangle GJL\) tells us these three angle congruence pairs
\(\angle G \cong \angle G\\\angle I \cong \angle J\\\angle H \cong \angle L\)
Notice for instance that angles H and L are the third letters mentioned in GIH and GJL respectively. This means the order is important when forming congruence statements.
We can then combine angle pairings to determine which segment pairs are congruent. Here are the pairs
\(\overline{GI} \cong \overline{GJ}\\\overline{GH} \cong \overline{GL}\\\overline{IH} \cong \overline{JL}\)
which you have correctly indicated with the proper tickmarks.
Complete the solution of the equation. Find
the value of y when x equals - 13.
- 4x + 5y = 12
Enter the correct answer.
OOO
DONE
Answers
Answer:
Step-by-step explanation:
To solve this equation, you re supposed to plug in -13 for x
So, it would be...
-4(-13)+5y=12
52+5y=12
5y=12-52
5y=-40
y=-8