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Morgarella [4.7K]

4 years ago

7

So confused on 30 and 31 and need to get them done!

2 answers:

nexus9112 [7]4 years ago

7 0

The formula for the circumference of a circle is

C=πd where d=diameter
lets plug in what we know
C=48π

Since they wanted it expressed in terms of pi, this is where you stop so the answer would be 48π

Answer=48π

31.
For this one they want you to solve for the surface area. I cant really show this as they want you to draw a picture but i will try and explain it as best i can.

So imagine the prism show was like a cardboard box, and you broke it down so that all of the sides lay flat so it looks like the picture below. Now they want you to find the area of all of those squares. so you should in the end have to of those squares be 5*7=35in² as the area, two be 7*9=63in² as the area and the last two as 5*9=45in² as the area. Good luck!

stira [4]4 years ago

5 0

For #31 you would make two squares on the left and right side and then four rectangles in the middle

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what is the coordinate of the vertex of the parabola y-2=1/12(x+10) a. ( 10,-2) b. (-10,2) c. (-2,10) d. (2.-10)

solniwko [45]

Answer:

$y-a= c(x-b)^2$

With the vertex $V= (b,a)$

We see that b = -10 and a = 2 and then the vertes wuld be:

$V= (-10,2)$

And the best option is:

b. (-10,2)

Step-by-step explanation:

For this problem we have the following function:

$y-2 = \frac{1}{2} (x+10)$

And if we compare this expression with the general expression for a parabola given by:

$y-a= c(x-b)^2$

With the vertex $V= (b,a)$

We see that b = -10 and a = 2 and then the vertes wuld be:

$V= (-10,2)$

And the best option is:

b. (-10,2)

4 0

3 years ago

Sally wants to purchase a new car, and its price is $35,000. Since Sally does not have enough money, she would like to get a loa

Margaret [11]

Answer:

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Hope this helps!

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3 years ago

Find the length of XY with endpoints X(-2,7) and Y(-2,-8

Sholpan [36]

$length=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}=\sqrt{(-2-(-2))^2+(-8-7)^2}\\=\sqrt{0^2+(-15)^2}=\sqrt{225}=15$

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4 years ago

40*18√3 <br> I am in need of help.

Jet001 [13]

I hope this helps you!

8 0

3 years ago

Factor this <br> -4x²y²y²+4x³y³

Katena32 [7]

Factoring the term $-4x^2y^2y^2+4x^3y^3$ we get $-4x^2y^3(y-x)\\$

Step-by-step explanation:

We need to factor the term: $-4x^2y^2y^2+4x^3y^3$

For factoring we need to find the common term in the expression given.

Solving:

$-4x^2y^2y^2+4x^3y^3\\=-4x^2y^4+4x^3y^3\\=-4x^2y^3(y-x)\\$

It cannot be simplified further.

So, Factoring the term $-4x^2y^2y^2+4x^3y^3$ we get $-4x^2y^3(y-x)\\$

Keywords: Finding Factors

Learn more about Finding Factors at:

#learnwithBrainly

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3 years ago