Answer:
LM+MN=LN
3x-5+x+7=17
4x=17+5-7
4x=15
x=15/4=3.75
LM= 3x-5=3*3.75-5=6.25
Step-by-step explanation:
A.
lxl=7
x=7 x=-7 (Take two cases, one as the others side negative and the other as positive)
B.
l2xl=32
2x=32 2x=-32
x=16 x=-16
C.
lx+7l=10
x+7=10 x+7=-10
x=3 x=-17
D.
lxl=53.1
x=53.1 x=-53.1
Answer:
80/3
Step-by-step explanation:
7 = (3x + 4)/12
84 = 3x + 4
84 - 4 =3x
80/3 = x
x = 80/3
To solve for revolutions, we will have to take the distance of the travel and divide that by the circumference of the wheel.
Distance of travel = 3.67 miles
Circumference of wheel = 82.6 inches
We have to convert the inches to miles. There are 63360 inches in one mile.
Circumference of wheel = 82.6 in * (1 mi/63360 in) = 0.0013 miles
Revolutions = Distance/Circumference = 63,538.46 revolutions
