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2 years ago

Please help me this is really confusing here's the question

Mathematics

1 answer:

LuckyWell [14K]2 years ago

3 0

Answer:

I'm pretty sure its D. 11.5

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I ready quiz,algebraic expressions with exponents

Amanda [17]

Answer:

8,000^3

Step-by-step explanation:

volume is l x w x h

20 x 20 x 20 = 8,000

4 0

1 year ago

A bag contains 120 marbles. Some are red and the rest are black. There are 19 red marbles for every black marble. How many red m

Alexus [3.1K]

Answer:

Step-by-step explanation:

brainest plz

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2 years ago

The number of DVDs in a random person’s home collection is counted for a sample population of 80 people. The mean of the sample

VLD [36.1K]

Answer:

$E = 3.46\ movies$

Step-by-step explanation:

The formula to find the error is:

$E = z_{\frac{\alpha}{2}}\frac{\sigma}{\sqrt{n}}$

Where:

$\sigma$ is the standard deviation

n is the sample size

n = 80 people

$\sigma$ = 12 movies

Then

$1- \alpha$ = confidence level = 0.99

$\alpha= 1-0.99$

$\alpha = 0.01\\\\\frac{\alpha}{2} = 0.005$

We look for the Z value: $Z_{0.005}$

$Z_{0.005}=2.58$ Looking in the normal standard tables

Therefore:

$E =2.58*\frac{12}{\sqrt{80}}\\\\E = 3.46\ movies$

7 0

2 years ago

How many partial products are in area model A

Andrew [12]

Answer:

where is model A

Step-by-step explanation:

8 0

2 years ago

The perimeter of a rectangle is 16 inches. The equation that represents the length of the rectangle and a represents the width o

Vesna [10]

Answer and Step-by-step explanation:

As we know that

$Perimeter\ of\ rectangle = 2\times (length + breadth)$

Given that

The perimeter of a rectangle is 16 inches i.e length and breadth should be measured by that way in which the perimeter of rectangle comes 16 inches

We considered four way of measuring the perimeter

Length Width Perimeter

1 7 16

2 6 16

3 5 16

4 4 16

Simple it is as we multiply the 8 by 2 it gives 16 inches and the same is displayed above

So there are four combinations of 8 how it came.

8 0

2 years ago

Read 2 more answers