Find the unit rate: 15 pounds for $12.99
1 answer:
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we are given
Jimmy is trying to escape Jane
For finding total distance , we will find distances and then add them
He runs 12 km/hr for 5 minutes
First distance:
speed =12 kh/hr
time=5 minutes
we can change into hour
now, we can plug values
second distance:
speed =17 kh/hr
time=8 minutes
we can change into hour
now, we can plug values
third distance:
speed =6 kh/hr
time=2 minutes
we can change into hour
now, we can plug values
now, we can find total distance
so,
total distance is 3.46667 km...........Answer
Answer:
(x, y) = (40, 30)
Step-by-step explanation:
A graphing calculator can show you the solution to this system of equations is (x, y) = (40, 30). That is the point of intersection where the two lines cross.
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An algebraic solution can be found by using the substitution method. An expression for y can be found using the second equation:
y = 110 -2x . . . . . . subtract 2x from both sides
Using this in the first equation gives ...
3x -4(110 -2x) = 0 . . . . substitute for y
11x = 440 . . . . . . . . . simplify, add 440
x = 40 . . . . . . . . . . divide by 11
y = 110 -2(40) = 30
The solution is (x, y) = (40, 30).
