11. Find the surface area of each figure. Leave the answers in pi where applicable. Show work

Mathematics

1 answer:

____ [38]2 years ago

8 0

11. Find the surface area of each figure. Leave the answers in pi where applicable. Show work
36cm^2
14. Find the surface area of each figure. Leave the answers in pi where applicable. Show work
36*pi cm^2
19. Find the surface area of each figure. Round to the nearest tenth. Show work
391.6 in^2
23. Find the volume. Round to the nearest tenth if necessary. Show work
130.7*pi yd^3
29. What is the volume of a sphere with a surface area of 452.39 cm2? Round your answer to the nearest hundredth. Show work
 288*pi cm^3
Attached solution.

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Eloise made a list of some multiples of 8/5 write 5 fractions that can be in Eloise list

alexgriva [62]

This question is asking for a list of fractions, that when you pull out common factors, they will all simplify back to the 8/5 fraction.

So if 2 is the common factor, you multiply the numerator and denominator by 2.

2: (8*2)/(5*2)= 16/10

3: (8*3)/5*3)= 24/15

4: (8*4)/(5*4)= 32/20

5: (8*5)/(5*5)= 40/25

10: (8*10)/5*10)= 80/50

Eloise's Potential List:
16/10, 24/15, 32/20, 40/25, 80/50

If you simplify any of these fractions above, you will get 8/5 again.

To work backwards:
80/50: 10 goes into 80, 10 goes into 50= 8/5

16/10: 2 goes into 16, 2 goes into 10= 8/5

Hope this helps! :)

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3 years ago

How would the expression x^2-4 be rewritten using Difference of Squares?

Anna [14]

a2 – b2 = (a + b)(a – b) or (a – b)(a + b).
This is the 'Difference of Squares' formula we can use to factor the expression.

In order to use the 'Difference of Squares' formula to factor a binomial, the binomial must contain two perfect squares that are separated by a subtraction symbol.

x^2 - 4 fits this, because x^2 and 4 are both perfect squares, and they are separated by a subtraction symbol.
All you do here to factor, is take the square root of each term.

√x^2 = x
√4 = 2

Now that we have our square roots, x and 2, we substitute these numbers into the form (a + b)(a - b).

(a + b)(a - b)
(x + 2)(x - 2)

Our answer is final (x + 2)(x - 2), which can also be written as (x - 2)(x + 2), it doesn't make a difference which order you put it in.

Anyway, Hope this helps!!
Let me know if you need help understanding anything and I'll try to explain as best I can.

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2 years ago

Which is the product of 7/9 and 6 in a fraction number

PIT_PIT [208]

Answer:

4 2/3

Step-by-step explanation:

7/9 multiplied by 6/1 = 42/9

Simplify: 14/3

Turn it into a mixed number: 4 2/3

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2 years ago

Find the measure of angle of GDE

nikdorinn [45]

I would think it is a 90 degree angle, sorry if I’m wrong.

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2 years ago

Can someone help me with this question?

stiks02 [169]

5x−2(x+1)=14

distribute

5x -2x-2 =14

3x-2 = 14

add 2 to each side

3x = 16

divide by 3

x=16/3

Answer x=16/3 or 5 1/3

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3 years ago