Answer:
a. is correct
b. not correct
c. not correct
d. is correct
Step-by-step explanation:
The answer is 10% there is 40% six graders and 20% seventh graders then you need 10% more
2x-3y=4
x+4y=-9/*(-2)
2x-3y=4
-2x-8y=18
-11y=22/:(-11)
y=-2
x+4*(-2)=-9
x-8=-9
x=-1
I hope this helped.
N^(7-3) = n^4
When dividing indices, you subtract the indices. If we multiply, you add them.
I think one is chattering teeth but is that the whole chart on the right?