Step-by-step explanation:
-7(k-8)+2k Use distributive property.
-7k+56+2k Combine like terms.
-5k+56
Mother knows best :)
20 bicycles each of 2 wheels
So 20 x 2 = 40 wheels
10 cars each of 4 wheels
So 10 x 4 = 40 wheels
Total = 40 + 40
= 80 wheels
Answer:
$690
Step-by-step explanation:
all you have to do is multiply $345 by 2 since she spent half of her money
Area of deck= 2(20w)+4(w^2)+2(50w)d
456=2(20w)+4(w^2)+2(50w)
456=40w+4w^2+100w
456=4w^2+140w
114=w^2+35w
0=w^2+35w-114
find what 2 numbers multiply to get 114 and add to get 35 and factor
-3 and 38
0=(w-3)(w+38)
set each to zero
w-3=0
w=3
Answer: x=8
Step-by-step explanation: Solve for x by simplifying both sides of the equation, then isolating the variable.
Hope this helps you out.
