Help please i need it fast

Answer:

8-1/4 miles/ hour.

Step-by-step explanation:

11/4 (miles) ÷ 1/3 (hour). When you divide a number by a fraction use (Keep-Change-Flip).11/4 × 3/1 = 33/4 miles/hour. Convert improper fraction to mixed number by dividing 33 by 4.33/4 = 8-1/4 miles/ hour.

Answer:

$3.6

Step-by-step explanation:

I looked it up, I don't know how to do that on my own

Answer:

the third one...............

Answer:

the answer to your question is y = two-fifths x minus 1

Step-by-step explanation:

hope it helps

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Explanation:

Subtract the second equation from the first one

\(\ \ \ \ 3x+3y-5z = 4 \ \ ... \text{ eq 1}\\-(4x-4y+z = -1) \ \ ... \text{ eq 2}\\---------\\\ \ -x+7y-6z = 5\)

Let's call that result equation 4.

Now focus on equation 3 and equation 4

equation 3 is   -x+7y-6z = 2

equation 4 is   -x+7y-6z = 5

Note how the left hand sides are identical, but the right hand sides are different. This means that we have an inconsistent system with no solutions. No matter what numbers we pick for x,y,z, there is no way to make all three given original equations to be true.

Sam first one

Craig second one

Randy third one

Charlie fourth one

From the data second is Craig, third is Randy and fourth is Charlie.

Given that, 4 persons ran a race.

Craig took 25.9 minutes

32.28 minutes took by Charlie

32.2 minutes by Randy

25.85 by Sam

To find who own second, third and fourth

Arranged the decimals in ascending order and found the answers.

By arranging in ascending order:

Ascending order means to arrange numbers in increasing order, that is, from smallest to largest.

First is Sam = 25.85

Second is Craig = 25.9

Third is Randy = 32.2

Fourth is Charlie = 32.28

Hence, from the data second is Craig, third is Randy and fourth is Charlie.

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Answer:

12

Step-by-step explanation:

Answer:

Step-by-step explanation:

T=56t and C=64(t-.25)

64(t-.25)=56t

64t-16=56t

8t-16=0

8t=16

t=2 hours

Answer:

(See below)

Step-by-step explanation:

m<1 = 180-130= 50 degrees

because <1 and the 130 degree angle are a linear pair so they are supplementary

m<2 = 50 degrees

because <1 and <2 are alternate interior angles so they are congruent

Answer:

y-intercept: 3

slope: -3

Step-by-step explanation:

The y-intercept is the point at which a line crosses the y-axis, which means that the y-intercept must be (0, y). The only value at which x is 0 is (0, 3), so the y-intercept is 3.

The definition of slope is rise over run, or:

\(m=\frac{y_2-y_1}{x_2-x_1}\)

Choose any two coordinates and replace the values in:

\(m=\frac{6-3}{-1-0} \\m=\frac{3}{-1}\\m=-3\)

Answer:

11025

Step-by-step explanation:

100+5÷100=1.05 squared

10000x1.05squared=11025

Answer:

Amount = 11205

CI = 1205

Step-by-step explanation:

\(a = p(1 + \frac{r}{n} ) {}^{nt} \)

Here,

p = 10000

r = 5% = 5/100 = 0.05

n = 1

t = 2

\(a = 10000(1 + \frac{0.05}{1} ) {}^{1 \times 2} \)

\(a = 10000(1.05) {}^{2} \)

\(a = 10000(1.1025)\)

\(a = 11205\)

C.I = a - p

C.I = 11205 - 10000

C.I = 1205

Answer:

Step-by-step explanation:

The ratio by mass of copper to zinc in the alloy is 3:1.

To find the ratio by mass of copper to zinc in the alloy, we need to first calculate the total mass of the alloy. We can do this by adding the mass of copper and zinc:

Total mass of alloy = 13.5 g + 4.5 g = 18 g

Now we can find the ratio of copper to zinc by dividing the mass of copper by the mass of zinc:

Ratio of copper to zinc = 13.5 g / 4.5 g = 3:1

Therefore, the ratio by mass of copper to zinc in the alloy is 3:1.

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The integral evaluates to `4z`.

Given that region D is bounded by the line y=1 and the parabola y²=22+6 (or y²=6x). We need to evaluate `∬ D f(x,y) dA`, where `f(x,y)=zy`. The region D can be sketched as follows: Find the bounds of integration: Since the integral is from left to right, the variable y goes from y=1 to y=±sqrt(6x).

The variable x goes from x=0 to x=4. So, the limits of integration are: `0 ≤ x ≤ 4, 1 ≤ y ≤ √(6x)`Using these bounds of integration, we get the following double integral:`∬ D f(x,y) dA = ∫₀⁴ ∫₁^√(6x) zy dy dx`Evaluating the inner integral:`∫₁^√(6x) zy dy = [z(y²/2)]₁^√(6x) = z(3x-x²/2)`Substituting this in the original integral,

we get:`∬ D f(x,y) dA = ∫₀⁴ z(3x-x²/2) dx`Evaluating the integral:`∫₀⁴ z(3x-x²/2) dx = z[3(x²/2)-x³/6]₀⁴= z(24/6) = 4z`Hence, `∬ D f(x,y) dA = 4z`.

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The value of the additional data point is 36

To find the value of the additional data point, we can use the concept of the sample mean.

Given the data set: 23, 28, 20, 33, 42, 12, 19, 50, 36, 25, 19.

The sample mean of this data set is 26.5.

To find the value of the additional data point, we can use the formula for the sample mean:

(sample mean) = (sum of all data points) / (number of data points)

In this case, we have 11 data points in the original data set. Let's denote the value of the additional data point as x.

Therefore, we can set up the equation:

26.5 = (23 + 28 + 20 + 33 + 42 + 12 + 19 + 50 + 36 + 25 + 19 + x) / 12

Multiplying both sides of the equation by 12 to eliminate the fraction, we have:

318 = 282 + x

Subtracting 282 from both sides of the equation, we find:

x = 318 - 282

x = 36

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.

Answer: 60,62,64

Step-by-step explanation:

69+62+64=186

I divided 186 by 3 (since triangles have 3 sides) and played with the numbers from there.

Answer:

x > 3

Step-by-step explanation:

This is an open circle, meaning there will be no equal sign.

The line is going to the right of 3, meaning x > 3

So, our inequality is x > 3

Answer:

y=-4/3

Step-by-step explanation:

i hope this helps

The null hypothesis (H0) and alternative hypothesis (Ha) for each situation are a) H0: µ = 18 Ha: µ < 18 b) H0: µ = 50 Ha: µ > 50 c) H0: µ = 24 Ha: µ ≠ 24. Based on the given p-value of 0.02, the decision for each situation are a) Since p < 0.05, we reject the null hypothesis b) Since p < 0.05, we reject the null hypothesis c) Since p < 0.05, we reject the null hypothesis.

The null hypothesis (H0) and alternative hypothesis (Ha) for each situation are as follows:

a) H0: µ = 18 (the mean time for mice to complete the maze is equal to 18 seconds)
Ha: µ < 18 (the mean time for mice to complete the maze is less than 18 seconds)

b) H0: µ = 50 (the mean score for the teaching assistant's students is equal to 50)
Ha: µ > 50 (the mean score for the teaching assistant's students is greater than 50)

c) H0: µ = 24 (the mean score for students who passed the credit examination is equal to 24)
Ha: µ ≠ 24 (the mean score for students who passed the credit examination is not equal to 24)

Based on the given p-value of 0.02, the decision for each situation is as follows:
a) Since p < 0.05, we reject the null hypothesis and conclude that the loud noise does cause the mice to complete the maze faster.
b) Since p < 0.05, we reject the null hypothesis and conclude that the teaching assistant's students do have a higher mean score than the class as a whole.
c) Since p < 0.05, we reject the null hypothesis and conclude that the students who passed the credit examination do differ in their understanding of spoken French from students who actually take the French courses.

These decisions are justified because a p-value less than 0.05 indicates that there is a statistically significant difference between the sample mean and the population mean, and therefore we can reject the null hypothesis and accept the alternative hypothesis.

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Answer:

n = 55/8

Step-by-step explanation:

\(\frac{11}{n} = \frac{8}{5}\\\\cross \ multiply :\\ 8 \times n = 11 \times 5\\\\n = \frac{11 \times 5}{8} = \frac{55}{8}\)

Answer:

\(n=\frac{55}{8}\)

Step-by-step explanation:

First, cross multiply

\(\frac{11}{n} =\frac{8}{5}\)

\((11)*(5)=8*n\)

\(55=8n\)

Now, flip the equation

\(8n=55\)

Divide both sides by 8

\(\frac{8n}{8} =\frac{55}{8}\)

\(n=\frac{55}{8}\)

hope this helps :)

The results of the study examining the relationship between years spent smoking and attitudes toward quitting should show a negative relationship between these variables. This means that as the number of years spent smoking increases, participants' optimism for the success of a treatment program should decrease.

In the study, participants were asked to rate their optimism for the success of a treatment program, which serves as a proxy for their attitudes toward quitting. The variable being measured is the level of optimism, which can be quantified using a numerical rating scale or likert scale. The independent variable is the number of years spent smoking, which represents the duration of smoking behavior.

To determine the relationship between these variables, researchers would likely conduct statistical analyses, such as correlation or regression analysis. These analyses would examine the association between the number of years spent smoking and participants' optimism ratings. A negative relationship would be indicated by a statistically significant negative correlation coefficient or a negative regression coefficient.

The study's results should demonstrate that as the number of years spent smoking increases, participants' optimism for the success of a treatment program decreases. This suggests that individuals who have been smoking for a longer duration may be less hopeful about quitting successfully.

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The HCF of the polynomials x^6 -  3x^4+ 3x² - 1 and x³+ 3x^2+ 3x+ 1 is (x+1)^3.

Let us suppose the Polynomials to be f(x) = x^6 - 3x^4 + 3x^2 - 1  And polynomial g(x) = x^3 + 3x^2 + 3x + 1

Now,  According to the question,

we have f(x) = x^6 - 3x^4 + 3x^2 - 1  

Adding and subtracting 2^x2,

⇒ x^6 - x^4 - 2x^4 + 2^x2 + x^2 - 1

⇒ x^4(x^2 - 1) - 2x^2(x^2 - 1) +1(x^2 + 1)

⇒ (x^2 - 1)(x^4 - 2x^2 + 1)

⇒ (x + 1)(x - 1)(x^4 - 2x^2 + 1)

⇒ (x + 1)(x - 1)(x2 - 1)^2

⇒ (x + 1) (x - 1) (x + 1)^2 (x - 1)2

⇒ (x + 1)^3(x - 1)^3      ----(1)

And, g(x) = x^3 + 3x^2 + 3x + 1

⇒ x^3 + x^2 + 2x^2 + 2x + x + 1

⇒ x^2(x + 1) + 2x(x + 1) + 1(x + 1) ⇒ (x + 1)(x^2 + 2x + 1)

⇒ (x + 1) (x + 1)2 ⇒ (x + 1)3      ----(2)

Now, The HCF of f(x) and g(x) is the common factor of equations (1) and (2)

⇒ (x + 1)^3 .

∴ The HCF of the polynomials (x^6 - 3x^4 + 3x^2 - 1) and (x^3 + 3x^2 + 3x + 1) is (x + 1)^3.

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Answer:

(a)

• C(x)=88000+5500x

• R(x)=7500x

(b)55 times

Explanation:

Let the number of performances = x

• The cost of producing the musical = $88,000

• The cost per performance = $5900

(a)Thus, the total cost for x performances:

The revenue per performance is $7500, therefore, the equation for revenue is:

(b)To break even, the cost must be equal to revenue.

Next, solve for x.

The musical must be performed 55 times to break even.

Answer: B D I J M

Step-by-step explanation: you just gotta see if any of the two answers work an if they don’t it’s nethier!

Thee factory is able to provide 94.38 boxes per hour to the warehouse.

Rate = (2000 - 1245) / 8 = 94.38 boxes per hour

Therefore, the factory is able to provide 94.38 boxes per hour to the warehouse.

Boxes added in 40 hours = rate * time = 94.38 * 40 = 3,775.2

Therefore, the inventory at the end of a 40-hour work week would be:

1245 + 3775.2 = 5020.2 boxes

rate = (50000 - 1245) / time

Simplifying this equation, we get:

time = (50000 - 1245) / rate = 511.64 hours (rounded to two decimal places).

Therefore, it will take approximately 511.64 hours to fill the warehouse to its 50,000 box capacity,

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Answer:

2

x=40

Step-by-step explanation:

A triangle has 180 degrees and considering that triangle ABC is similar to DEF that means they have the same angle (A=D,B=E,C=F)

180=104 +36+x

180=140+x

180-140=x

40=×

Answer:

x + -53 = 89

Step-by-step explanation:

You want to try and find the term x using the information given. If 1 + 2 = 3, then 3 - 2 = 1. The same goes for this scenario. Just replace "1" with x, "2" with -53 and "3" with 89. Does this help?

Answer:

The formula for circumference of a circle is C = πd, where C is the circumference and d is the diameter.

We are given that the circumference is 48.984 feet, and we can use the approximation of π as 3.14.

Substituting into the formula, we have:

48.984 = 3.14d

To solve for d, we divide both sides by 3.14:

d = 48.984 / 3.14

d ≈ 15.6 feet

Therefore, the floor's diameter is approximately 15.6 feet.

Answ

n-11 ≤ 19

or 11-n ≤ 19

Step-by-step explanation:

Mrk ME BRAINLIEST PLZZZZZZZZZZZZ

9. Yes, since \(8+12>16\), meaning the side lengths satisfy the triangle inequality.

10. No, since \(5+7<20\), meaning the side lengths do not satisfy the triangle inequality.