Malachy and Sara have played 31 tennis matches. Malachy has won 21 times.
Sara won the rest.
a) Estimate the probability that Malachy wins.
b) Estimate the probability that Sara wins.

3

step-by-step explanation:

divide 13.5 by 9 to get the scale factor. it equals 1.5

2 * 1.5 = 3

4+4+2x

or

2x+8

step-by-step explanation:

hello from mrbilldoesmath!

answer:   x^2 + y^2 = 1024

discussion:

the equation of a circle with center (h,k) and radius "r" is

(x-h)^2 + (y-k)^2 = r^2.

in our case

(x-0)^2 + (y-0) ^2 = 32^2 = 1024

you,

mrb