First, you set up your equation then you put the pieces together to get the answer
Answer:
1/80
Step-by-step explanation:
-8*5*xy= -1
Sub 2 for x
-8*5*2*y= -1
-80y=-1
y=1/80
(i was kinda confused because i wasn't sure if the x was a variable or a multiplication symbol but i made it a variable) yea
You are looking for a speed in miles per hour, so start by converting 90 minutes into hours.
90/60 = 1.5
90 minutes = 1.5 hours
speed = distance/time = (105 miles)/(1.5 hours) = 70 mph
Why did both of their names have to start with the same letter
x=jay hours
y=jamie huours
x=10+3y
x=43
so
43=10+3y
minus 10
33=3y
divide 3
11=y
jamies spent 11 hours
6.4x + 2.8y = 44.4
6.4(3) + 2.8y = 44.4
19.2 + 2.8y = 44.4
-19.2 -19.2
2.8y = 25.2
------ ------
2.8 2.8
y = 9
