Can someone help me with these questions 1-7 thanks

1)3

2)2

3) -4

4) -5/6

5)-2

6)26

7)10 inch

Step-by-step explanation:

1)

2)

3)

-64 is equals to (-4)^3, so it's cube root will be -4

4)-125/216 = {(-5)/(6)}^3 so cube root will be -5/6

5) cube of cube root of 12 will be 12

so the equn becom 10-12= -2

6)512= 8^3, so its cube root will be 8

now equn becomes 2×8+10=26

7( volume of cube = (side)^3=1000=(10)^3

so side will be 10

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

step-by-step explanation: