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3 years ago

A dialonal cross section of a sphere produces which two dimesional shape?

Mathematics

1 answer:

stellarik [79]3 years ago

6 0

Regardless of how the sphere is cut, it will form a circle

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What is the approximate area of the shaded region under the standard normal curve below? Use the portion of the standard normal

kotegsom [21]

This region as the same area as the one in your previous question.

Pr[1 < Z < 2] = Pr[-2 < Z < -1] ≈ 0.14

5 0

3 years ago

What is equivalent to -1/4y -2 1/4y + 1/2 (4-2y) a) -3y + 2 b) -3 1/2y + 2 c) -4y + 4

Amanda [17]

Answer:

B. -3 1/2y + 2

Step-by-step explanation:

Our expression is: $\frac{-1}{4} y-2\frac{1}{4} y+\frac{1}{2} (4-2y)$ .

Let's first distribute out that parentheses. Remember that distribution is simply taking the sum of the product of the outside term with each of the inside terms. Here, the outside term is 1/2 and the inside terms are 4 and -2y:

$\frac{1}{2} (4-2y)=\frac{1}{2} *4+\frac{1}{2} *(-2y)=2-y$

Now, we have:

$\frac{-1}{4} y-2\frac{1}{4} y+2-y$

We want to combine like terms, which means combining all the terms with y in them:

$\frac{-1}{4} y-2\frac{1}{4} y-y+2=\frac{-1}{4} y-\frac{9}{4} y-\frac{4}{4} y+2=\frac{-1-9-4}{4} y+2=\frac{-14}{4} y+2=\frac{-7}{2} y+2$

Remember that -7/2 can be written as the mixed number -3 1/2, so our final answer is:

-3 1/2y + 2

The answer is thus B.

~ an aesthetics lover

7 0

3 years ago

Can somebody plz help me Q 4-5-6 Plz and thank you

yarga [219]

I think it’s 7 hope this helps you

3 0

4 years ago

90 3/7 was a demical

LenKa [72]

90.42857143 or
90.4 to nearest decimal

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4 years ago

Which of the following is irrational

Temka [501]

Answer:

#4 pi is irrational.

When you calculate pi (3.14...) it goes on forever and it doesn't repeat more than 1 number in a row.

4 0

3 years ago