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vampirchik [111]

2 years ago

8

3n+(-7)= -1need to know what n equals to

2 answers:

ch4aika [34]2 years ago

7 0

Answer:N=2

Step-by-step explanation:

3n+(-7)=-1

3n-7=-1

3n=-1+7

3n/3=6/3

n=2

amm18122 years ago

6 0

Answer:n=2

Step-by-step explanation:you add +7 on both sides and than divide 3 on both sides

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2 years ago

The sum of the following algebraic expression 2x + 15, 7-8x and 3x - 41 is 30 find the value of x..

Ksju [112]

$\\ \tt \longmapsto2x + 15 + 7 - 8x + 3x - 41 = 30 \\ \\ \tt \longmapsto 2x - 8x + 3x + 15 + 7 - 41 = 30 \\ \\ \tt \longmapsto - 3x - 19 = 30 \\ \\ \tt \longmapsto 3x + 19 = - 30 \\ \\ \tt \longmapsto 3x = - 30 -19 \\ \\ \tt \longmapsto 3x = - 49 \\ \\ \tt \longmapsto x = - \frac{49}{3}$

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The face of a clock has a circumference of 63 in. What is the area of the face of the clock?

ryzh [129]

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The area of the clock $= 315.41\ inch^{2}$

Step-by-step explanation:

We have been given the face of the clock that is $63\ in$

So that is also the circumference of the clock.

Since the clock is circular in shape.

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From here we will calculate the value of radius $(r)$ of the clock that is circular in shape.

Then $2\pi(r)=63\ inch =\frac{63}{2\pi} = 10.02\ in$

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