crarylolmeow
12.12.2020 •
Mathematics
Find the product of (x- 5)
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Ответ:
x² - 25
Step-by-step explanation:
Given:
(x-5)(x+5)
Find:
Product
Computation:
(x-5)(x+5)
(a+b)(a-b) = a² - b²
(x-5)(x+5) = x² - 5²
(x-5)(x+5) = x² - 25
Alternate:
(x-5)(x+5)
x² + 5x - 5x - 25
x² - 25
Ответ:
Given is:
The initial height of the candle is 9 inches.
And rate of burning is 0.5 inches per hour.
Part A:
The ordered pairs are: {(0,9),(1,8.5),(2,8),(3,7.5),(4,7),(5,6.5)}
Here we will subtract 0.5 each time, with increasing the time per hour as the rate of burning is 0.5 inches per hour.
Part B:
Yes, it is a function because each x value has its own y value.
Part C:
Yes, the relation would still be a function. The only difference is the time, the candle reduces its height 0.45 inches per each hour so ordered pairs will be : (0,9) (1,8.55) (2,8.1) (3,7.65)