Answer:
37
Step-by-step explanation:
68/2 = 34 and ten 34 + 3 = 37 so the number is 37
Remember PEMDAS. We start with the parentheses. 2-1=1. Then 1^2 is just one. Now we do (1*5) and (9/3) separate. Now we add them both together 5+3. The final answer is 8
Answer:
51.90
Step-by-step explanation:
the answer is 51.90
hope this helped!!!
Answer:
choice 2) x+2y+3 = 7
Step-by-step explanation:
equation to match:
x+2y = 4
add 3 to each side
x+2y+3 = 7 (which is the same as choice 2, x+2y+3 = 7)
Answer:
Step-by-step explanation:
P(x)= x³ - x² - 18
Q(x) = P(2x-1)
= (2x-1)³ - (2x-1)² -18
= (2x)³ - 3*(2x)² * 1 + 3*2x* 1² - 1³ - [ (2x)² - 2*2x*1 + 1 ] - 18
=8x³ - 12x² + 6x - 1 - [4x² - 4x +1 ] - 18
= 8x³ - 12x² + 6x - 1 - 4x² + 4x - 1 - 18
= 8x³ - 16x² + 10x - 20
Hint : (a-b)³ = a³-3a²b+3ab²-b³
(a-b)² = a² -2ab + b²
