I'm only sure about the second one
A•b = (3×10) + (-2×-4) + (-7×-2) = 30 + 8 + 14 = 52
Answer:
$30
Step-by-step explanation:
6 people and each one buys a $5 pumpkin so we'll multiply
6x5=30 dollars
Answer:
4.35
Step-by-step explanation:
Given:
Area(A)= 63m^2
Length (L)= 2W+5
Width (W)=?
A=LxW
63=(2W+5)(W)
63=2W^2 + 5W
0=2W^2+5W-63
0=(2W-9)(W+7)
2W-9=0 then W=4.5 and W+7=0 then W=-7
Can only use 4.5 since it is positive and distance is positive.
W= 4.5 m
L=2W+5=2 (4.5)+5=9+5=14m
