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Nonamiya [84]
2 years ago
12

if c=a/b - d-e/f-d, find the value of f when a=3, b=4, c=-6,d=-5 and e=2. step by step explanation plz.​

Mathematics
1 answer:
soldi70 [24.7K]2 years ago
8 0

Answer:

f = \frac{-163}{27}

Step-by-step explanation:

\frac{3}{4} - \frac{-5-2}{f+5}  = -6

\frac{3}{4} + 6 = \frac{-7}{f + 5}

\frac{27}{4} = \frac{-7}{f + 5} \\

=> 27 * ( f + 5) = -7 * 4

=> 27f + 135 = -28

=> 27f = -163

=> f = \frac{-163}{27}

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Helen got a 7% reduction in the price of a pair jeans that are normally $32. What is the approximate percent in the price?
adoni [48]

A percentage is a way to describe a part of a whole. The approximate percent decrease in the price is 21.87%, thus, the correct option is B.

<h3>What are Percentages?</h3>

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

Given the reduction in the price is $7, while the original cost is $32. Therefore, the approximate percent decrease in the price is,

Percentage decrease = 7/32  × 100%

                                     = 21.87%

Hence, the approximate percent decrease in the price is 21.87%, thus, the correct option is B.

The correct question is:

Helen got a $7 reduction in the price of a pair of jeans that are normally $32. What is the approximate percent decrease in the price?

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The percent decrease is approximately 21%.

The percent decrease is approximately 43%.

The percent decrease is approximately 78%

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7 0
2 years ago
Bob's age is 4 times greater than Susanne's age. Dakota is three years younger than Susanne. The sum of Bob's, Susanne's, and Da
belka [17]
Susanne is 16 years old.

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s = Susanne's age

d = Dakota's age

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d = s - 3

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b + s + d = 93


 solve these equations:

b = 4s

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b + s + d = 93


and get:

b = 64 years

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(remember that s = Susanne) 

d = 13 years
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Step-by-step explanation:

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