Amath class had 5 girls and 5 boys in the seventh grade and 1 girl and 7 boys in the eight grade. the teacher randomly selects a seventh grader and an eight grader from the class for a competition. what is the probability that the students she select are both boys?

Step-by-step explanation:

5 girls and 5 boys in the seventh grade and 1 girl and 7 boys in the eight grade

Total number of 7th grade = 10

Prob(boy 7th grade) = 5/10 = 1/2

Total number of 8th grade = 8

Prob(boy 8th grade) = 7/8

Prob(boy 7th and boy 8th) = 1/2×7/8

= 7/16

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98