Is there a picture to this question?
Answer:
Nolan correctly identified the square numbers before and after 18.
The square roots of them are 4 and 5.
Clearly, square root of 18 should lie between 4 and 5 only.
He, then carefully squared 4.1, 4.2, 4.3 etc. and identified that 4.3 squared is nearer to 18.
Since, Nolan is finding estimated square root, his steps are cool and he didn't make any error.
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➷ Simply substitute the values into the equations to see if it's correct:
Since the time taken will be more than 2 hours, we can try it with the value 3
t(x) = 70 + 5(3) = 85
g(x) = 30 + 15(3) = 75
As you can see, this is the incorrect choice as when a value more than 2 hours is used, the second engineer has a cheaper cost.
➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
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Answer:
y= 3/2x + 24
Step-by-step explanation:
the slope of the line can be found with this formula: (y2-y1)/(x2-x1) where x and y are the coordinates of two points.
m = (9-6)/(-10+12) = 3/2
for find the equation or the line we can use this formula:
y-y1 = m(x-x1)
y-9 = 3/2(x+10)
y = 3/2x +15+9
y = 3/2x + 24
