Answer:
We need to find length and width. To find two unknowns we need two equations.
P = 2L + 2W = 34
L = W + 3
34 = 2(W + 3) + 2W
34 = 2W + 6 + 2W
28 = 4W
W = 7
L = 7 + 3 = 10
The length is 10 inches and the width is 7 inches.
Step-by-step explanation:
Answer:
Total surface area = 580.96 yd^2
Step-by-step explanation:
Total surface area
From left to right
Rectangle 1
A = lw = 9.9 *20 =198
Rectangle 2
A = lw = 6.8 *20 =136
Rectangle 3
A = lw = 9.9 *20 =198
Triangle top
A = 1/2 bh = 1/2 (6.8)(7.2) =24.48
Triangle bottom
A = 1/2 bh = 1/2 (6.8)(7.2) =24.48
Add them together
198+136+198+24.48+24.48
580.96
Total surface area = 580.96 yd^2
Answer: 151 is the answer so a
Step-by-step
Claire receives 24 marbles. David gets 30 marbles and Elizabeth gets 36 marbles.
4x+5x+6x=90
15x=90
x=6
4(6)=24 for Claire
5(6)= 30 for David
6(6)= 36 for Elizabeth
