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Anton [14]
3 years ago
8

What is the answer to 2/3 ( c-18)= 7, please show the steps

Mathematics
2 answers:
Roman55 [17]3 years ago
4 0

(2/3)*(c-18)=7 <em>(Multiply terms on both sides of equation by 3)</em>

2(c-18)=21

2c-36=21

2c=57

c=57/2

c=28.5

pav-90 [236]3 years ago
4 0
<em>2 / 3 ( c - 18 ) = 17 
multiplying 2 / 3 to the value in bracket
2 c / 3 - 36 / 3 = 7 
adding 36/3 on other side
2 c / 3 = 7 + 36 / 3 
by taking L.C.M
2 c / 3 = 21 /3 + 36 / 3
2c / 3 = 21 + 36 / 3
2 c / 3 = 57 /3 
multiplying 3 on other side
2 c= 57 / 3 </em>
×<em>3
3 will be canceled
2c = 57
dividing 2 on other side
c = 57 / 2
c = 28.5 answer...</em>
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The following are the LINEAR functions.

  • 2x\:+\:4\:=\:3x\:-\:8
  • y = 3x - 2
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Step-by-step explanation:

We know that linear functions are the equations with a straight line graph in an XY plane.

Also, a linear function is a function of the form

f(x)=mx+b

where m is the slope and b is the y-intercept. The only power of the variable is 1.

So, from the given expressions we can determine that:

1) y^2=\:5x\:+2

y^2=\:5x\:+2  is NOT a linear function because the power of y is 2, hence the graph won't be a straight line. Therefore, it is not a linear function

2) 2x\:+\:4\:=\:3x\:-\:8

2x\:+\:4\:=\:3x\:-\:8

x=12

This is a linear equation is an equation of a straight line, written in one variable.  The only power of the variable is 1

3) y = 3x - 2

y = 3x - 2 is a linear function because it is of the form f(x)=mx+b and the power of its x and y variables is 1. Hence, the function has a straight line graph.

4) y\:+\:x^2\:=\:12

y\:+\:x^2\:=\:12 is NOT a linear function because the power of x is 2, hence the graph won't be a straight line. Therefore, it is not a linear function.

5) y\:=\:x^2\:+\:2x

y\:=\:x^2\:+\:2x is NOT a linear function because the power of x is 2, hence the graph won't be a straight line. Therefore, it is not a linear function.

6) 1

1 is a constant function and a constant function is also considered linear in this context, as it is a polynomial of degree 0 or is the 0 polynomial.

7) 3x\:+\:-y\:=\:24

3x\:+\:-y\:=\:24 is a linear function as the power of its x and y variables is 1. Hence, the function has a straight line graph. Therefore, it is a linear function.

In a  summary, the following are the LINEAR functions.

  • 2x\:+\:4\:=\:3x\:-\:8
  • y = 3x - 2
  • 1
  • 3x\:+\:-y\:=\:24

7 0
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