Answer:
Josh's solution is NOT correct.
Step-by-step explanation:
Josh's solution is NOT correct.
x^2 - 6x - 7 = 0
As you know:
-7 = (-7) * (+1) and -6 = (-7) + (+1) = -6
So factor x^2 - 6x - 7 = 0, you have
(x - 7)(x + 1) = 0
Set each factor = 0 to solve the equation
x - 7 = 0; x = 7
x + 1 = 0; x = -1
Solutions: x = -1 and x = 7
So Josh's solution is NOT correct.
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Answer:
2500 is not a reasonable estimate.
Step-by-step explanation:
We are given the following in the question:
Number of pages read by Josie = 246
Pages read by older brother = 3 to 4 times as many pages as Josie
If x represents the number of pages read by her brother, we can write:
Putting values, we get,
Since, 2500 does not lie in this interval
Thus, 2500 is not a reasonable estimate for the number of pages that Josie's brother read.
Answer:
The loss is $120 and the loss percentage is 8%.
Step-by-step explanation:
Given that,
SP of a car = $1,380
CP of a car = $1,500
As CP > SP, it means there is a loss in selling of that car.
Loss = CP - SP
= $1,500 - $1,380
= $120
Loss percentage,
Hence, the loss is $120 and the loss percentage is 8%.