Answer:
Step-by-step explanation:
l = 14
Step-by-step explanation:
The perimeter of a rectangle is
P =2(l+w)
The width is x-6
w = x-6
The length is 8 units longer than the width
l = w+8
l = x-6+8
l = x+2
We can substitute this into the equation for Perimeter, which is given as 40
40 = 2(x+2 + x-6)
Combine like terms
40 =2 (2x-4)
Divide by 2
40/2 = 2/2 (2x-4)
20 = 2x-4
Add 4 to each side
20+4 =2x-4+4
24 = 2x
Divide by 2
24/2 =2x/2
12=x
We want to know the length
l = x+2
l =12+2
l = 14
Answer:
Simple
Step-by-step explanation:
You Quit The Class
Answer:
30.7
Step-by-step explanation:
add the 15,3.7 ,and the 12
X=number of bags of peanuts.
y=number of cups of lemonade.
We suggest this system of equations.
0.35x+0.75y=7.05
y=x+5
solve by substitution method.
0.35x+0.75(x+5)=7.05
0.35x+0.75x+3.75=7.05
1.1x=7.05-3.75
1.1x=3.3
x=3.3/1.1=3
y=x+5
y=3+5=8
Answer:
8 cups of lemonade
X = 3.....................