270 divided in to 9 equals 30
Answer:
f(7)=58
b(-2)-a(12)=-188
Step-by-step explanation:
f(7)=(7)^2+9
49+9
f(7)= 58
b(-2)-a(12)=8(-2)-14-13(12)-2
-16-14-156-2
=-188
Answer:
Step-by-step explanation:
Answer:
The number of girls is 128 and the number of boys is 83
Step-by-step explanation:
Let
x -----> the number of girls
y ----> the number of boys
we know that
------> equation A
----> equation B
substitute equation B in equation A and solve for y
Find the value of x
therefore
The number of girls is 128 and the number of boys is 83