Answer:
93.5
Step-by-step explanation:
Lets say, first number = x
Second number = 3x+7
Total = 49
(x)+(3x+7)= 49
4x+7 = 49
4x = 42
x = 42/4
x= 10.5
x= 10.5
3x+7 = 3(10.5)+7 = 93.5
Hope this helps!!
You need to look at this as a proportion and ratio.
If
![\frac{9}{180}](https://tex.z-dn.net/?f=%20%5Cfrac%7B9%7D%7B180%7D%20)
seventh graders were chosen, that is
![\frac{1}{20}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B20%7D%20)
of them.
You need to find
![\frac{1}{20}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B20%7D%20)
of the sixth graders to remain constant.
![\frac{1}{20}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B20%7D%20)
of 160 = 8 students.
Answer:
B. 2/5 barrel/hour
Step-by-step explanation:
cross multiply 1/5 and 2/1
=2/5
Answer:
6
Step-by-step explanation: