Answer:
160 Adults
Step-by-step explanation:
7/8=140/x
7x=(140)(8)
7x=1120
7x/7=1120/7
x=160
I bet the equation is x²+4x-21=0
factorise
(x+7)(x-3)=0
x+7=0 , x-3=0
x=-7, x=3
the answer is C
Answer:
umm im confused a bit
Step-by-step explanation:
Direct variation has this equation:
y = kx
where k is the constant of variation
y = -5 ; x = -15
y = kx
-5 = k(-15)
-5/-15 = k
1/3 = k
Choice D. y = 1/3 x
Answer:
y ≈ -0.667x -1.333
Step-by-step explanation: