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2 years ago

If 12 boys take 3 days to paint a room,how long will it take 9 boys to complete the same job?

Mathematics

1 answer:

dedylja [7]2 years ago

4 0

Answer: im convinced that this is 4th grade stuff, yet it makes no sense to me

Step-by-step explanation:

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What is the area, in square centimeters, of the shape below? Express your answer as a fraction in simplest form.

Lina20 [59]

4/9 cm^2 and I hope the picture explains it

7 0

3 years ago

Solve for H: A = L ⋅ W ⋅ H

netineya [11]

Simply get rid of the alphabets you don't want and you have the answer. hope this helps. be sure to give me the brainliest answer

7 0

4 years ago

5(n+2)=10 how do I solve this

nordsb [41]

Divide both sides by 5 and then n + 2 =2 so the answer is n=0

hope this help

3 0

4 years ago

Question is in the image

pshichka [43]

Answer:

(x +3)^2 + (y -3)^2 = 3^2

Step-by-step explanation:

Your first task is to find the center.

The longest possible line of the circle goes from (-3,0) to (-3,6)

So the center is at the midpoint of these two points.

The midpoint is at (-3 - 3)/2 , (6+ 0)/2 or (-3,3)

That gives you the center of the circle.

So far what you have is

(x +3)^2 + (y -3)^2 = r^2

Now the distance of the center to the bottom point is (-3,3) to (-3,0)

r^2 = (x2 - x1)^2 + (y2 - y1)^2

x2 = - 3

x1 = - 3

y2 = 3

y1 = 0

r^2 = (-3 - -3)^2 + (3 - 0)^2

r^2 = 3^2

The entire answer is

(x +3)^2 + (y -3)^2 = 3^2

8 0

3 years ago

The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tail

Rainbow [258]

Answer:

The hypothesis test is right-tailed and the parameter that is being tested is the population standard deviation ( $\sigma$ ).

Step-by-step explanation:

We are given with the following null and alternative hypothesis below;

Null Hypothesis, $H_0$ : $\sigma$ = 7

Alternate Hypothesis, $H_A$ : $\sigma$ > 7

The parameter that is being tested here is the population standard deviation ( $\sigma$ ). So, the null hypothesis states that the population standard deviation is equal to 7 while on the other hand, the alternate hypothesis states that the population standard deviation is greater than 7.

The above hypothesis test is right-tailed because in the alternate hypothesis, greater than sign is there which means that if the test statistics will be more than the critical value, then the null hypothesis will be rejected.

4 0

4 years ago