Answer:
7/20
Step-by-step explanation:
Seventh grade: Total = 3 + 7 = 10
Number of boys = 7 boys
Probability of a boy being picked = 7/10
Eighth grade: Total 5 + 5 = 10
Number of boys = 5
Probability 5/10 = 1/2
The probability of the correct outcome = 7/10 * 1/2 = 7 / 20
Answer: 7 / 20
A. d=45t
b. 112.5 miles. 112.5=45•2.5
first 1/8 then 4/8 and lastly 7/8
Answer:
21.28 and 967.46
Hope it helps have a good night :)))))))))))))))))