Help please❤️❤️❤️ Urgently I’m crying and panicking so plz help with my math

Step-by-step explanation:

1. In fully simplified form, is equivalent to

First, we can remove the exponents outside of each set of parenthesis. Recall that when you have exponents inside the parenthesis and an exponent on the outside, you can multiply the powers to remove the parenthesis.

Now we can combine like terms. Recall that when you multiply two powers with the same base, you add the powers.

So our answer is B.

2. In fully factored form is equivalent to . One of the correct factors is

First, we need to factor out from this expression

Now, we need to factor the expression

This means that we are looking for two numbers that add together to get -1 and multiply to get -42. These two numbers would be 6 and -7.

This means that the factored form is

So our fully factored form would be

So our answer is B.

3. The Chrysler Building is 319 metres tall. An artist is looking to draw a scale drawing of the Chrysler Building at a scale of 1: 5000. How tall should she draw the Chrysler Building?

From this problem, we can set up the following proportion:

This means that

meters.

We have to move the decimal 2 places, which means that we have to modify the units as well. This means that our units become millimetres.

This gives us

mm

The last thing we need to do is round this number. As 8 is larger than 5, we can round the 3 to a 4.

This gives us our answer of

mm

So our answer is D.

4. The cube has a surface area of . The volume of the cube, to the nearest cubic centimeter, is

The equation for the surface area of a cube is

This means that we can solve for the side length of the cube, s.

Recall that the volume of a cube is

This means that

When rounded to the nearest cubic centimeter, this value becomes

So our answer is B.

5. The area of the shaded region above can be written as which of the following polynomial expressions?

The area of this shaded region is everything within the rectangle that is not within the smaller rectangle. This means that we can take the difference of the area of each to find our answer.

Let us begin with finding the area of the larger rectangle. As the area of a rectangle is equal to the length multiplied by the width, the area of the rectangle would be

And now for the area of the smaller rectangle

Now, we can take the difference of each of these equations

So our answer is B.

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step-by-step explanation:

395.84

step-by-step explanation:

2πrh+2πr²

2 (pie)(radius)(height)+2(pie)(radius)^2