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andriy [413]
2 years ago
9

Five times a number is divided by 7 more than the number. If the result is 2, then what was the original number?

Mathematics
2 answers:
oksian1 [2.3K]2 years ago
5 0

Answer:

14/3

Step-by-step explanation:

(5n)/(7+n) = 2

Multiply both sides by 7 + n:

(7 + n) x (5n)/(7 + n) = (7 + n) x 2

5n = 14 + 2n

3n = 14

Divide both sides by 3:

(3n)/3 = 14/3

n = 14/3

RoseWind [281]2 years ago
4 0

Answer:

-1

Step-by-step explanation:

the equation would be 5x+7=2.

so first you'll subtract from both sides so you'll do 2 from 7, whcih equals -5. then you'll divide 5 from each side. 5x÷5=x. -5÷5=-1. so the answer would be -1

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I will give 50 points and brainliest amd whatever u want pls its urgent PLS ​
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Answer:

The answer to your question is 24 cm³

Step-by-step explanation:

Data

Initial volume = 2/5

Additional volume = 42 cm³

Final volume = 4/7

the total volume of the glass = ?

Process

1.- Write a proportion to help you solve the problem

                  42 cm³  -------------------- 4/7 of the total

                   x            -------------------  7/7

2.- Solve the proportion

                  x = (7/7 x 42) / 4/7

3.- Simplification

                  x = 42 / 4/7

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Read 2 more answers
7- a. What is the radius of the circle with center (3,10) that passes through (12,12)?
loris [4]

Answer: a. Radius of circle = \sqrt{85}

b. The equation of this circle : (x-3)^2+(y-10)^2=85

Step-by-step explanation:

Given : Center of the circle = (3,10)

Circle is passing through (12,12).

a. To find the radius we apply distance formula (∵ Radius is the distance from center to any point ion the circle.)

Radius of circle = \sqrt{(12-3)^2+(12-10)^2}

Radius of circle = \sqrt{(9)^2+(2)^2}=\sqrt{81+4}=\sqrt{85}

i.e. Radius of circle = \sqrt{85}

b. Equation of a circle = (x-h)^2+(y-k)^2=r^2 , where (h,k)=Center and r=radius of the circle.

Put the values of (h,k)= (3,10) and r= \sqrt{85} , we get

(x-3)^2+(y-10)^2=(\sqrt{85})^2

(x-3)^2+(y-10)^2=85

∴  The equation of this circle :(x-3)^2+(y-10)^2=85

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