Solve the equation | -2 x 5 |
1 answer:
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Answer:
Step-by-step explanation:
a) Mark any two points in line a
(0,7) ; (5,-3)
Find the slope
slope = y2 - y1 /x2-x1
Equation: y-y1 = m(x-x1)
y - 7 = -2(x - 0)
y - 7 = -2x
y = -2x + 7 --------> line a
c) equation of line b
(2,-1); slope = -2 {as b line is parallel to line a}
y - y1 =m(x-x1)
y -(-1) = -2*(x - 2)
y + 1 = -2x - 2*-2
y + 1 = -2x + 2
y = -2x + 2 -1
y = -2x +1 ------> equation of line b
It takes 20.833 minutes to fill a 50 gallon tub
<em><u>Solution:</u></em>
Given that,
It takes 1 & 1/4 minutes to fill a 3-gallon bucket of water with a hose
Let "x" be the time taken to fill a 50 gallon tub
Therefore, from given,
1.25 minutes = 3 gallon
x minutes = 50 gallon
This forms a proportion and we can solve the sum by cross multiplying
Thus it takes 20.833 minutes to fill a 50 gallon tub