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2 years ago

you have 3 times as many pencils as your friend , if you have 21 pencils how many does your friend have ?

Mathematics

2 answers:

Fofino [41]2 years ago

8 0

Answer:

Step-by-step explanation:

zysi [14]2 years ago

8 0

7.
this is because 21 divided by 3 is 7.

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The following polygons are similar: <br> True or False

stellarik [79]

I would have to say false because they do not have the same perimeter and area

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3 years ago

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5x— 2y = 10<br> What is the perpendicular slip given the following equation

Flauer [41]

Step-by-step explanation:

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3 years ago

A perfume company claims that the mean weight of ther new perfume is at least 8.9 fluid oz. Express the null hypothesis and the

zlopas [31]

Answer:

$H0: mu = 8.9 fl oz.\\\\$

$Ha: mu ≠8.9 fluid oz$

Step-by-step explanation:

Given that A perfume company claims that the mean weight of ther new perfume is at least 8.9 fluid oz

For testing this claim, in Statistics we perform a certain measures called hypothesis testing.

For this first step is to create null and alternate hypothesis.

Normally null hypothesis would have some statistic = something

Here we want to test the mean weight of perfume

Hence null hypothesis would be

H0: mu = 8.9 fl oz.

Alternate hypothesis would be opposite of this claim

i.e.

Ha: mu ≠8.9 fluid oz

Hence answer is

$H0: mu = 8.9 fl oz.\\\\$

$Ha: mu ≠8.9 fluid oz$

6 0

3 years ago

A rectangular box with a square base is open at the top and has a volume of 12 cubic feet. Each side of the base has a length of

Stolb23 [73]

We know that the side lengths of the square base are: x * x. The volume is 12, so for now, let's say that y is the other side length. Then, x * x * y = 12. We can solve for y: y = 12/x^2. Now, we find the surface area of the 5 sides.

Four of the sides have the same area: x * (12/x^2) = 12/x, so we multiply this by 4: 48/x.

The last side is the base: x * x = x^2.

We add 48/x to x^2:

x^2 + 48/x

So, the answer is the fourth choice, (d).

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3 years ago

in order to encourage students to show up early to a school dance , the dance comittee decides to charge less for those who come

nadya68 [22]

It would be $2.25 if each student pays one more penny than the last one the penny count would be up to 150 pennies times the number of student which is 150 so multiply and add your decimal

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3 years ago