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Alenkasestr [34]
2 years ago
5

The expression (r + 2y) 3 is an example of _______.

Mathematics
1 answer:
JulijaS [17]2 years ago
3 0
(r + 2y)3
multiply the parentheses by 3
3r +2y x 3
calculate
3r +6y
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Firstly figure out how much money you earn per one hour. This is 312$ divided by 20 is 16$/hour. Then write an equation which represents only hourly earnings: y = 16x. To answer the last question just enter the value for variable x = 15, and you will get money earned per one week.
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2 years ago
Write in index form 12 × 12 × 12 × 12 × 12 × 12 × 12 × 12
iris [78.8K]

Answer:

\sf{12^{8} }

Step-by-step explanation:

12 × 12 × 12 × 12 × 12 × 12 × 12 × 12 = \sf{12^{8} }

\sf{12^{8} } = 429,981,696

An easy way to think of this is that there are 12 is being multiplied by itselg 8 times (there are 8 12s). Similar to how squared numbers work...

Hope this helps! If you need further explanation, let me know!

- profparis

8 0
1 year ago
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Mekhanik [1.2K]

Answer:

He drove 111 miles

If we were given the distance Lan drove last weekend instead off how much gas he used then we would have to find the amount of gas used by lan.

Step-by-step explanation:

Ian's car can go 185 miles on 5 gallons of gas

On 5 gallons of gas lan's car can go 185 miles

Therefore in gallon of gas lan 's car can go

185/5 = 37

So, for 3 gallons of gas lan's car can go

3 × 37 = 111

for 3 gallons of gas lan's car can go 111 miles

If we were given the distance Lan drove last weekend instead off how much gas he used then we would have to find the amount of gas used by lan.

5 0
2 years ago
Help please and show the steps
marshall27 [118]

Answer:

-sin(2A)

Step-by-step explanation:

1-(sin(A)+cons(A))^2

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1-(1+sin(2A))

1-1-sin(2A)

-sin(2A)

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Detailed explanation below

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