What is the value of 7x to the 2 power -10 ,when x = 6?

242

Step-by-step explanation:

1)  replace the values

7x^2-10

7(6)^2-10

2) get rid of the exponent by multiplying 6 times 6

7(36)-10

3) multiply 7 by 36

252-10

4) subtract 10

242

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

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