Harry is trying to solve the equation y = 2x^2 − x − 6 using the quadratic formula. He has made an error in one of the steps bel
ow. Find the step where Harry went wrong.
1 answer:
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Answer:
Step-by-step explanation:
Let "s" be the the speed of the car taking the shorter route in ,
Let "s-2" the speed of the cat taking the longer route in ,
Let "d" be the distance of the shorter route in miles and "d+43" be the distance of the longer route in miles.
Now, Equation for car taking the shorter route is given as:
(1)
and Equation for car taking the longer route is given as:
(2)
Now, substitute equation (1) in (2), we get
⇒
⇒
Therefore, equation (1) becomes,
Thus, the shorter route is =275 miles and the longer route is =d+43=275+43= 318 miles.
Answer: Yes, she will finish before winter break is over.
Explanation:
Since we have given that
Number of days in winter break = 17
Number of pages she read in each day = 75
Number of pages in the Harry Potter series she wants to read = 759
Now, we'll use unitary method,
in 1 day , she read = 75 pages
in 17 days , she read is given by
and 759 pages is less than 1275 pages.
So, she will finish before winter break is over.