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irina [24]
3 years ago
9

Simplify (a+8) (a-9)

Mathematics
2 answers:
lorasvet [3.4K]3 years ago
7 0

a2−17a+72

I used the foil method...

a2−9a−8a+72

Subtract 8a from −9a

a2−17a+72

sammy [17]3 years ago
3 0
Hi the answer is a8 - 81
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3 years ago
The ratio of John's money to Jimmy's money is 5:8. Jimmy spent 1/4
erma4kov [3.2K]

Answer:

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Step-by-step explanation:

Put the question into an equation:

8x - 1/4 x 8x = 5x + 450

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(solve) 6x-5x = 450

x = 450

This means that Jimmy had 8 x 450 $ to start with = 3600

you can check this by subtracting a quarter of 3600 from 3600 and also multiplying 450 by 5 and then obtaining their difference. You get 450!

Now ratio of new amounts:

Jimmy now has: $2700

John still has: $2250

so ratio is 2700:2250

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Hope this helps

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3 0
4 years ago
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Yuki888 [10]

Hey!

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Answer:

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x - 5 is to move left 5 units along the x-axis.

Another thing, the question doesn't state was transformation to use so we are going to assume we are translating.

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