Answer:
7/20 = x/400
Step-by-step explanation:
Answer is c (there is not a enough info given)
A. 30 sixth graders
b. 12 sixth graders
c. If the school has 40 students and the total of students is 70, the number of sixth graders is x
d. 36 students
Answer:The expression can be simplified in following steps;
Step-by-step explanation:
(16+a)+15=0
16+15+a=0
31+a=0
a=-31
It is 2/13. Divide number and denominator by 8.
