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atroni [7]
3 years ago
6

I need help ASAP Also I need to show work on it because it is for my homework

Mathematics
1 answer:
Bezzdna [24]3 years ago
3 0

Answer:4.5

Step-by-step explanation:

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Find the length of the base of a square pyramid if the volume is 128 cubic inches and has a height of 6 inches
Len [333]

Answer: a = 8

Step-by-step explanation:

Volume of a square based pyramid is given as

\frac{a^{2}h }{3} .

where a is the length of the side and h is the height.

Substituting into the formula , we have

V = \frac{a^{2}h }{3}

128 = a^{2}h /3

384= a^{2} X 6

Divide through by 6

384/6 = a^{2}

64 = a^{2}

Therefore :

a = \sqrt{\frac{64}{1} }

a = 8

6 0
3 years ago
Katie earns $12 an hour. Which graph represents the relationship between the number of hours Katie works and her earnings,
klasskru [66]

Answer:

first top left graph? 12×4 is 48 so that puts it about right

7 0
3 years ago
Read 2 more answers
Iam not sure about this questions answer can u give answer <br> Q10,11,12
irga5000 [103]

Answer:

10. First you multiply both sides by 3, making it 2x + 5 = 24

Then you subtract 5 from both sides making it 2x = 19

You dive both sides by 2 making x = 9.5

The answer is x = 9.5

11. First you need to find how much you need to pay each year. 12,000 x 0.05

you can make it easier by changing it to 120 x 5 = 600

You need to pay that for three years so 600 x 3 = 1800

Plus you need to pay the original money. 12,000 + 1,800 = 13,800      

The answer is $13,800    

12. First you change kilometers into centimeters. 172 km is 172,000 meters. 172,000 meters is 17,200,000

Then, you need to do 17,200,000 ÷ 500,000 but you can make it simple and do 172 ÷ 5 = 34.4

The answer is 34.4 cm

7 0
2 years ago
How would the expression x2 +8 be rewritten using Sum of Cubes?
Nadusha1986 [10]

Answer:

x^3+8=(x+2)(x^2-2x+4)

So if they meant x^3+8 then the answer is:

(x+2)(x^2-2x+4).

The choice this corresponds to is A.

Step-by-step explanation:

The sum of cubes formula for factoring or expanding:

a^3+b^3=(a+b)(a^2-ab+b^2)

You have I'm assuming they meant:

x^3+8.

Compare x^3+8 to a^3+b^3.

You should see in place of a you have x.

You should also see in place of b you have 2.

a^3+b^3=(a+b)(a^2-ab+b^2)

x^3+8

x^3+2^3

x^3+2^3=(x+2)(x^2-2x+2^2)

x^3+8=(x+2)(x^2-2x+4)

Let's check it for fun.

So we are going to use the distributive property.

We are going to distribute all the terms in the first ( ) to all the terms in the second ( ).

x(x^2-2x+4)   +   2(x^2-2x+4)

x^3-2x^2+4x   + 2x^2-4x+8

Combine like terms:

x^3-2x^2+2x^2+4x-4x+8

Simplify the grouping of like terms:

x^3+0x^2+0x+8

0 times anything is 0:

x^3+8

8 0
3 years ago
Will give brainliest please help! &lt;3
creativ13 [48]
Hi love! I believe it’s A. If not please report back. Thank you!
5 0
2 years ago
Read 2 more answers
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