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KonstantinChe [14]
3 years ago
15

Solve for b -5/8b=10

Mathematics
1 answer:
Furkat [3]3 years ago
4 0
-5/8b   b=10

The new equation would look like this because we multiplied 8xb. 8 x b = 80

-5/80 

Now if you divide -5 by 80 you get -0.0625

So -0.0625 is your answer
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Mrs. Martini is 6 years more than 3 times as old as Tony. Eight years ago, she
zalisa [80]

Mrs Martini age is 42 years and Tony age is 12 years

Step-by-step explanation:

The given is:

  • Mrs. Martini is 6 years more than 3 times as old as Tony
  • Eight years ago, she  was 2 years less than 9 times as old as he was then

Assume that Tony is x years old now

∵ Mrs. Martini is 6 years more than 3 times as old as Tony

∵ Tony is x years old

- Multiply the age of Tony by 3 and add 6 to the product

∴ The age of Mrs Martini = 3 x + 6

8 years ago

- Subtract 8 from the age of each one

Tony age = (x - 8)

Mrs Martini age = (3 x + 6) - 8 = 3 x + 6 - 8 = 3 x - 2

∵ Eight years ago, Mrs Martini was 2 years less than 9 times as old

  as Tony was then

- Multiply Tony age by 9 and subtract 2 from the product

∵ Tony age from 8 years ago = x - 8

∵ Mrs Martini age from 8 years ago = 3 x - 2

∴ 9(x - 8) - 2 = 3 x - 2

- Simplify the left hand side

∴ 9 x - 72 - 2 = 3 x - 2

- Add like terms

∴ 9 x - 74 = 3 x - 2

- Subtract 3 x from both sides

∴ 6 x - 74 = -2

- Add 74 to both sides

∴ 6 x = 72

- Divide both sides by 6

∴ x = 12

∵ x represents the age of Tony

∴ Tony is 12 years old

∴ 3 x + 6 is the age of Mrs Martini

- Substitute x by 12

∵ 3(12) + 6 = 36 + 6 = 42

∴ Mrs Martini is 42 years old

Mrs Martini age is 42 years and Tony age is 12 years

Learn more:

You can learn more about word problems in brainly.com/question/10557938

#LearnwithBrainly

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The tree's grow rate is 1.1 per month
7.48/6.8
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Answer:d

Step-by-step explanation:

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Sam is a painter. He has 2 1/4 gallons of paint, and it takes 3/4 of a gallon to paint a room. How many rooms can he paint?
Masteriza [31]
The answer is c . I hope I helped
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Which of the following shows 7.538 correctly rounded to the ones place?
SVETLANKA909090 [29]

Answer:

8.0

Step-by-step explanation:

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2 years ago
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