Answer:5
Step-by-step explanation:
Simplifying
8x + -20 = 3x + 5
Reorder the terms:
-20 + 8x = 3x + 5
Reorder the terms:
-20 + 8x = 5 + 3x
Solving
-20 + 8x = 5 + 3x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-3x' to each side of the equation.
-20 + 8x + -3x = 5 + 3x + -3x
Combine like terms: 8x + -3x = 5x
-20 + 5x = 5 + 3x + -3x
Combine like terms: 3x + -3x = 0
-20 + 5x = 5 + 0
-20 + 5x = 5
Add '20' to each side of the equation.
-20 + 20 + 5x = 5 + 20
Combine like terms: -20 + 20 = 0
0 + 5x = 5 + 20
5x = 5 + 20
Combine like terms: 5 + 20 = 25
5x = 25
Divide each side by '5'.
x = 5
Simplifying
x = 5
Squrae has 4 sides of equal legnth
perimiter=legnth of all sides added together or distance around (peri=around, meter=measure)
so 4 sides
each side is equal
1 sides=5.6
perimiter=5.6 times 4=22.4 cm is answer
Answer:
Speed of car B is 33 km/h and speed of car A is
Step-by-step explanation:
Let speed of car B be km/h
Speed of car A is 12 km/h more than car B.
Therefore,
Speed of car A = km/h
Distance = Speed × Time
Distance travelled by car A in 4 hours = km = km
Distance travelled by car B in 4 hours = km
Also, cars A and B are 312km apart after 4 hours.
Speed of car B is 33 km/h and speed of car A is
Answer:
45 mph
Step-by-step explanation:
the average speed is found by adding the speed together and then divdiing the sum by however many numbers u added together.
So then the average speed would be 50 mph+40mph/2 which equals 45 mph.