Answer:
x length
y width
2x=y
2x+2y=42/2
x+y=21 x+y=21
x+2x=21
3x=21/÷3
x=7
7+y=21
y=21-7=14
7×14=98 the area of a rectangle
Answer:
Step-by-step explanation:
98°,100°
Answer:
5 seconds.
Step-by-step explanation:
Make an equation.
Time in air = x
Time in water = 12 - x
16x + 36 - 3x = 127
13x = 91
x = 7
12 - 7 = 5
1 foot = 12 inch 20/(5*12) = 20/60 = 1/3 2) .Let x=width 9/5x=length 2W 2L=P 2(x) 2(9/5x)=112 2x (18/5)x = 112 28x = 560 x=560/28 x= 20 inches Width (9/5)x=36 inches Length Check: 2W 2L = P 2(20) 2(36) = 112 8 48 =112