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Nadya [2.5K]
3 years ago
15

Solve the following sums: a) 4(a+1)=2 b) 3-9x=-6-8x c) 3(4x-1)=7(2x-5)

Mathematics
1 answer:
aliya0001 [1]3 years ago
7 0

Step-by-step explanation:

A. 4(a + 1) = 2

= 4a + 4 = 2

= 4a = 2-4 = - 2

= a = - 2/ 4 = - 1/2

B. 3 - 9x = - 6-8x

3 + 6 = - 8x +9x

9 = x

C. 12x - 3 = 14x - 35

- 3 + 35 = 14x - 12x

32 = 2x

32 / 2 = x

16 = x

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The expression that can be use to find the difference between the fraction of money Amar put in the bank and the fraction he spent on the book is 4 / 7 x - 1 / 3 x

<h3>How to create an expression?</h3>

Amar put 4/7 of the money he earned raking leaves in the bank. Therefore,

let the money she earned = x

Hence,

amount put in bank = 4 / 7 x

She spent 1 / 3 of the money on books. Therefore,

money spent on books = 1 / 3 x

Therefore, the expression that can be use to find the difference between the fraction of money Amar put in the bank and the fraction he spent on the book is as follow:

4 / 7 x - 1 / 3 x

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2 years ago
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The best and most correct answer among the choices provided by your question is the first choice.

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3 years ago
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Investments increase exponentially by
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The amount of money after 45 years will be $64,060.

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Compound interest is the interest on a loan or deposit calculated based on the initial principal and the accumulated interest from the previous period.

We know that the compound interest is given as

A = P(1 + r)ⁿ

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If you made a $2,000 investment.

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