Best to look up the formula for the surface area of a sphere and then find it:
A = 4πr^2, where r is the radius of the sphere. Then,
A = 4π(15 in)^2 = 4(3.14)(225 in^2) = 2826 in^2 (answer)
This is represented by the formula given in the lower left.
The answer is tan64 = 13/x :)
J=25/5+7 and those are your answers i hope i helped
k=2j-13

Write 1 2/3 as an improper fraction...
1 = 3/3. Plus the 2/3 makes 5/3.

To add/subtract fractions, they need the same denominator. (bottom number)
We can change the denominator by multiplying the top and bottom of a fraction by the same number. (it will stay equal, like 1/2 and 2/4)
Let's change 5/3 and 3/4 to a denominator of 12.
5/3 = 20/12 (bottom multiplies by 4, so does the top)
3/4 = 9/12 (bottom multiplies by 3, so does the top)

Now we just subtract the 20 minus 9 twelfths. (the twelfths act as a sort of unit)