2x² - 4x - 30
2(x²) - 2(4x) - 2(15)
2(x² - 4x - 15)
Answer:
$44
Step-by-step explanation:
Original price = $80
Discount on sale = 50%
Discounted price = (1 - 50%) * original price
Discounted price = 0.5 * $80 = $40
Sales tax = 10%
Sales tax amount = 0.1 * $40 = $4
Total cost = discounted price + sales tax amount
Total cost = $40 + $4 = $44
Four plus the absolute value of twenty-seven minus ten
13km i think / that maybe wrong too
Let

be the length of the hypotenuse in the right triangle

, with

for

, the angle opposite the hypotenuse.
By the law of cosines,

But

, so we end up with

.