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Viktor [21]
3 years ago
12

If y varies directly as x, and y = 25 when x = 5, find y when x = 25.

Mathematics
1 answer:
zimovet [89]3 years ago
6 0
A.125
Because to get from 5 to 25 you need to multiply by 5 so 25 times five equals 125
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Two mechanics worked on a car. The first mechanic charged S95 per hour, and the second mechanic charged S115 per hour.
Norma-Jean [14]

The first mechanic worked for 10 hours and the second mechanic worked for 15 hours.

Step-by-step explanation:

Given,

Charges of first mechanic = $95 per hour

Charges of second mechanic = $115 per hour

Total hours = 25

Total amount charged = $2675

Let,

The number of hours worked by first mechanic = x

The number of hours worked by second mechanic = y

According to given statement;

x+y=25    Eqn 1

95x+115y=2675     Eqn 2

Multiplying Eqn 1 by 95

95(x+y=25)\\95x+95y=2375\ \ \ \ Eqn\ 3

Subtracting Eqn 3 from Eqn 2

(95x+115y)-(95x+95y)=2675-2375\\95x+115y-95x-95y=300\\20y=300

Dividing both sides by 20

\frac{20y}{20}=\frac{300}{20}\\y=15

Putting y=15 in Eqn 1

x+15=25\\x=25-15\\x=10

The first mechanic worked for 10 hours and the second mechanic worked for 15 hours.

Keywords: linear equation, elimination method

Learn more about elimination method at:

  • brainly.com/question/12700460
  • brainly.com/question/12773544

#LearnwithBrainly

6 0
3 years ago
What fraction is equivalent to 0.002?
kherson [118]
Since 0.002 Is in the <u>thousandths place</u> on the right, It would be 2/1000.

So your answer would be in fratcion form:
2/1000

Word Form:
Two one-thousandths

Hope I helped ya! ^-^
4 0
3 years ago
Read 2 more answers
The pyramid shown has a square base that is 18 inches on each side. The slant height is 16 inches. What is the surface area of t
Alik [6]
The answer is 28sqinches Why The Surface Area of a pyramid is A=L×W×Have since the base is l×with combined it's now SA=BA×H
SA=18×16
SA=288sqinches.
4 0
3 years ago
What is f(-5) if f(x) = |2x-1| + 10?
Alex777 [14]
Substitute x = -5
|2* -5 -1| + 10
|-10-1| + 10
21
8 0
3 years ago
Square root of 16x^2y^4
motikmotik
4xy^2





.......................
7 0
3 years ago
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