Ask question

Ask question

All categories

3 years ago

12

If the volume of the pyramid shown is 12 centimeters cubed, what is its height? A rectangular pyramid with a base of 3 centimete

rs by 2 centimeters and a height of h. 1 cm 2 cm 6 cm 7 cm

2 answers:

MissTica3 years ago

8 0

Answer:

C) 6cm

Step-by-step explanation:

Took test on e2020

Fudgin [204]3 years ago

8 0

Answer:

The Answer Would Be C 6

Step-by-step explanation:

I Got A 100% On The Test

You might be interested in

For every ton of paper that is recycled, 17 trees are saved. Discrete or continuous?

dusya [7]

I would say continuous because you can technically cut down half a tree or recycle half a piece of paper

6 0

3 years ago

Who ever help I will give you the brainliest answer

Gala2k [10]

Answer:

just do it Like Nikey

Step-by-step explanation:

lol

4 0

3 years ago

Karen has 1/2 cup of sugar. She is baking cookies and needs 1 1/3 cups for a recipe. How much more sugar does she need If she wa

Evgen [1.6K]

Answer:

3 1/2 cups

Step-by-step explanation:

Let's start by figuring out how much sugar Karen needs in total.

She needs (1+1/3) cups for her original recipe. To triple that, we need (1+1/3) 3 times. We can calculate this by multiplying it by 3.

(1+1/3) * 3 = 3 + 1 = 4

Karen needs 4 cups in total. She has 1/2 cup. The difference is how much more she needs. Therefore, she needs 4 - 1/2 = 3 1/2 cups

3 0

3 years ago

Brewed decaffeinated coffee contains some caffeine. We want to estimate the amount of caffeine in 8 ounce cups of decaf coffee a

rusak2 [61]

Answer:

We would have to take a sample of 62 to achieve this result.

Step-by-step explanation:

Confidence level of 95%.

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.025 = 0.975$ , so Z = 1.96.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

Assume that the standard deviation in the amount of caffeine in 8 ounces of decaf coffee is known to be 2 mg.

This means that $\sigma = 2$

If we wanted to estimate the true mean amount of caffeine in 8 ounce cups of decaf coffee to within /- 0.5 mg, how large a sample would we have to take to achieve this result?

We would need a sample of n.

n is found when $M = 0.5$ . So

$M = z\frac{\sigma}{\sqrt{n}}$

$0.5 = 1.96\frac{2}{\sqrt{n}}$

$0.5\sqrt{n} = 2*1.96$

Dividing both sides by 0.5

$\sqrt{n} = 4*1.96$

$(\sqrt{n})^2 = (4*1.96)^2$

$n = 61.5$

Rounding up

We would have to take a sample of 62 to achieve this result.

8 0

3 years ago

The length of a rectangle is 2/5 its width and the perimeter is 280 inches, what are the length and width of the rectangle?

bogdanovich [222]

If the length is 2/5, or .40, then:

280/.40= 700

Check my answer:

.40*700= 280

The length is .40 (or 2/5) the width is 700.

I hope this helped!

6 0

3 years ago