Answer:
addition
Step-by-step explanation:
in this case its addition , but the only reson it is going first is bc it sin the parenthasies
What do you need help with?
Answer:
Part A: C
Part B:W(-1,9), X(1,8), Y(3,2), Z(-4,5),
Part C: 1,3,5
Step-by-step explanation:
X=number of girls.
y=number of boys.
We can suggest this system of equations:
2/7 x=3/5 y ⇒10x=21y ⇒x=21/10 y
y=x-165
We can solve this problem by substitution method:
x=(21/10)(x-165)
10x=21x-3465
10x-21x=-3465
-11x=-3465
x=-3465 /-11=315
y=x-165=315-165=150
Number of children=number of girls + number of boys
Number of children=315 +150=465
Answer: there were 465 children at the festival.
