Giving a test to a group of students, the grades and gender are summarized below Male
Female
Total
A
8
15
23
B
14
11
25
C Total
10 32
12 38
22 70
If one student is chosen at random,
Find the probability that the student was female AND got a "B". Write your answer as a reduced fraction.
P(female and "B")-

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls

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