Answer:
22.5 km
Step-by-step explanation:
divide 30 by 4 times it by 3
Answer:
x = 2, y= 3
Step-by-step explanation:
y = -2x+7
y = 5x-7
Since the equations are both equal to y, set them equal to each other
-2x+7 = 5x-7
Add 2x to each side
-2x+7 +2x= 5x+2x-7
7 = 7x -7
Add 7 to each side
7+7 = 7x
14 = 7x
Divide by 7
14/7 = 7x/7
2 = x
Now find y
y = 5x-7
y = 5*2 -7
y = 10-7
y =3
Answer:
243.75
I hope i am right
Step-by-step explanation:

Answer:
It is 20.74 and the fraction way it is 20 20/27
6.40 is to two decimal places