Answer:
9x+3
Step-by-step explanation:
First join the x terms, and you will find 9x (1x+8x), then join the numbers, and you get 3 (-7+10)
Hope it helps!
16+7x is the answer. I hope this helps
Answer:
(-9)(2)= -18
Step-by-step explanation:
since there are no signs in this expression, we will multiply. always remember, a negative times a positive will always be negative. just multiply 9 and 2 and you get 18. then add a negative sign. -18
Answer:-5/2±1/2
Step-by-step explanation:
x^2+ 5x +5=0
a=1,b=5,c=5
plugging into the quadratic formula
(-5±)/2
Answer:
k is the constant of proportionality
2 1/4 gallons
Step-by-step explanation:
y = kx, k is the constant of proportionality
y = how much of the tank is filled
x = how many gallons used
1/3 = k (3/4)
Multiply each side by 4/3 to isolate k
4/3*1/3 = k (3/4)*4/3
4/9 = k
y = 4/9x
We want y to be 1 for a full tank
1 = 4/9 x
Multiply each side by 9/4 to isolate x
9/4 = 4/9 x * 9/4
9/4 =x
We need 9/4 gallons or simplifying
2 1/4 gallons
