8 to 16
2 to 4
13 to 26
5 to 10
6 to 12
Answer:
The answer is B. 15
Step-by-step explanation:
x2=30
when you plug 15 in u get the equation 15x2=30
Answer:
78 cm should be the correct answer
Step-by-step explanation:
Answer:
35/4 or 8,3/4
Step-by-step explanation:
Flip the second fraction and multiply.
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>