Answer:
(5.4 mile/hour) x (5,280 feet/mile) x ( 1 hour / 60 minute)
= ( 5.4 x 5,280 / 60) feet/minute
= 475.2 feet/minute
Step-by-step explanation:
No, 47 equals 47, 66 does not equal 67, hence not similar
Answer:
x=2, y=1
x=-2, y = -1
Step-by-step explanation:
x - 2y = 0
x = 2y
x² - y² = 3
(2y)² - y² = 3
3y² = 3
y² = 1
y = 1 or y = - 1
x = 2 or x = -2
A markup means 100%+50%
1.5x=1335
x=890
1- multiply bottom equation by -3
3x+3y=27
-3x+111= 33
111+3y=60
3y=60-111
3y= -51
y= -17
Replace y in first equation with -17
3x+3(-17)= 27
3x-51=27
3x=27+51
x=26
Here, rest of them in the pic..