Semester 1:
let the number of students in the art class be 2a, and the number of the students in the gym class be 7a. (check: the ratio is 2a:7a = 2:7)
so the total number of students is 9a.
semester 2:
the 9a students are go to the art class and gym class at a a ratio of 5: 4,
so 5a students go to the art class, and 4a students go to the gym class.
<span>75 students are in art class in second semester means that 5a=75,
so a=75/5=15.
In the 1st semester the number of students was:
art class: 2a=2*15=30
gym class: 7a=7*15=105</span>
Answer: Y = 4
the output is 4
Step-by-step explanation:
substitute the given input value, 3, for x and solve
Y= 10 -2x
Y = 10 -2(3) multiply -2 × 3 to get -6
Y = 10 -6 . subtract
Y = 4
Answer:
32760 ways
Step-by-step explanation:
Suppose we all want to play different games, so 4 different games. At the first game there are 15 choices, at the 2nd game there are 14, the 3rd one there are 13 selections, and at the last there are only 12 options to select from. Then the total number of ways you can choose the 4 games is
15*14*13*12 = 32760 ways
Answer:
5 hours
Step-by-step explanation:
you take 715 and divide it by 13 to see how long it takes for one hour and you get 55
so then you divide 275 by 55 an dyou get 5
$150.00 because if you add all of them up you’ll get 150