Answer:
the least amount would be 9 lunch periods
Step-by-step explanation:
756/92 = 8.217
round it up to equal 9
I will do a and b and you do the rest.
For (a), the equation is x + y = 154.
For (b), the equation is 320x + 85y = 14,970.
We have two equations in two unknowns.
Use the substitute method to find x and y (the given c). Once you have x and y, use that to find d.
Take it from here.
Answer:
Step-by-step explanation:
Answer:i think it is y-y1=m(x-x1)
m is herein undefined.
Slope, m, is defined as change-of-y divided by change-of-x...
m=(y-y1)/(x-x1)
The mathematical concept of undefined means that the denominator is zero. This means that both values of x are equal.
(-4,-8)
This equation is x=-4
It is a vertical line and includes the point of y=-8.
Step-by-step explanation:
Answer:
Distance = 500 miles
Step-by-step explanation:
<u>Step 1: Write the data of speed, distance and time for aeroplane and automobile.</u>
<em>Automobile:</em>
Speed = r
Time = 10 hours (3 am till 1 pm)
Distance = SxT
Distance = r x 10 = 10r
<em>Aeroplane:</em>
Speed = 200 + r (200 mph more than automobile)
Time = 2 hours ( 11 am till 1 pm)
Distance = SxT
Distance = 2x(200+r) = 400+2r
<u>Step 2: Equate both distances to find the value of r</u>
Distance of automobile = Distance of aeroplane
10r = 400 + 2r
8r = 400
r = 50
<u>Step 3: Find the distance using any one equation</u>
Distance of automobile = 10r
r = 50
Distance = 10 x 50 = 500 miles
Therefore, the plane travels 500 miles.
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