Answer:
Step-by-step explanation:
16 = 2 *2 * 2 * 2 = 2⁴
16y⁴ = (2y)⁴
x⁴ - 16y⁴ = x⁴ - (2y)⁴
= (x²)² - [ (2y)² ]²
{Use identity = a² -b² =(a +b)(a- b). Here a =x² & b =(2y)²}
= (x² + (2y)² ) (x² - (2y)² )
= (x² + 4y²) (x² - 4y²)
28.6>-29.2 since -29.2 is negative it's lower than 28.6
Place a dot on the 0 spot and draw an arrow facing to the right. The dot must not be filled in. This shows that x>0 because the arrow and dot show the numbers that x can be.
Answer: j+47=55
Subtract 47 from both sides.
j= 8
Step-by-step explanation:
Answer:
Step-by-step explanation:
20% discount is 1/5 x 68 = 13.60
So pre-tax price is 68 - 13.60 = 54.40
Add sales tax:
54.40 x 1.06 = 57.66
so the answer is C
