Question

z = 5 is the solution of which of the following equations?a) 3z- 2 b) z-10 c) 2z-10 d) z+5

Your answer


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Answer 1

Answer:

z= 5 is the solution of equation 2z-10

2z-10=0

2z=10

z=10/2

z=5

Answer 2

Given,

The value of z is 5.

The four equations: a) 3z- 2 b) z-10 c) 2z-10 d) z+5

To find,

The equation that satisfies the given value of z.

Solution,

(2z-10) will have 5 as its solution.

According to the question,

The value of z is 5.

Now, we will put this value in every equation until we get the value to be 0.

a) 3z-2

a) 3z-23(5)-2

a) 3z-23(5)-215-2

a) 3z-23(5)-215-213

a) 3z-23(5)-215-213b) z-10

5-10

-5

c) 2z-10

2(5)-10

10-10

0

d) z+5

5+5

10

Now, we get only the value to be 0 for the third equation.

Hence, (2z-10) is the equation that satisfies the given value of z.