Answer:
y=20x
Step-by-step explanation:
Since y represents the total cost y is the total. 20x because it is 20 dollars an hour and x after 20 because we do not know how many hours they will plan for lessons.
y=-2x+7
Step-by-step explanation:
line segment xy has endpoints x(5 7) and y(-3 3)
for the equation of the perpendicular bisector of line segment xy
slope of line segment xy = 7-3 / 5+3
= 4/8
=1/2
so slope of perpendicular bisector is -2
as m1m2= -1 or m1= -1/m2
As perpendicular bisector goes through midpoint of xy , let's find midpoint of xy
midpoint(x,y) = (5-3 / 2 , 7+3 / 2)
=(2/2, 10/2)
=(1,5)
find the equation of line(perpendicular bisector) passing through (1,5) and the slope -2
y-5 = -2(x-1)
y-5 =-2x+2
y=-2x+7
Answer:
Height = 35 x sin(55deg) = ~28.7 feet
Answer:
-6.3x + 1.7
Step-by-step explanation:
(-3.4x +4.7) - (3 +2.9x)
distrubute the negitive sign
-3.4 +4.7 -3 -2.9x
combine like terms
-6.3x + 4.7-3
-6.3x +1.7
Answer: choice A) -8/5
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Work Shown:
Use the slope formula which basically says you subtract the y coordinates, then subtract the x coordinates in the same order, then you divide the results (reduce if possible)
m = (y2-y1)/(x2-x1)
m = (-1-7)/(4-(-1))
m = (-1-7)/(4+1)
m = -8/5
