If a = m + bt , find " m " when a = 24, b = 4 and t = 3
m=??

Step-by-step explanation:

If a = m + bt , find " m " when a = 24, b = 4 and t = 3

m=??

a = m + bt

24 = m + 4 * 3

24 = m + 12

m = 12

m= 12

Step-by-step explanation:

If a = 24, b = 4, and t = 3,

24 = m + (4)(3) (Multiply 4 and 3 to get the value of bt)

24 = m + 12 (4 times 3 equals 12)

24 - 12 = m + 12 -12  (Subtract both sides to isolate the variable)

12 = m ( The answer is 12 since 24 minus 12 is 12)

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)