Answer:
- 3a³ + 5a² - 3a + 7
Step-by-step explanation:
Given
(a³ - 2a + 5) - (4a³ - 5a² + a - 2)
Distribute both parenthesis noting the second is distributed by - 1
= a³ - 2a + 5 - 4a³ + 5a² - a + 2 ← collect like terms
= (a³ - 4a³ ) + 5a² + (- 2a - a) + (5 + 2)
= - 3a³ + 5a² - 3a + 7
To find the superficial area of a prism you have to do base perimeter * height
So find the perimeter of the right triangle: 9+8+5 = 22 yd
Then find the superficial area 22*12 = 264 yd^2
If every 10 minutes 3 buses leave then over a course of 60 minutes (1 hour ) 18 buses would leave
27.7*1.9=52.63 is second choice
64.1/97=0.66 best answer is 0.641
108.93*355.112= 38,682.35 reasonable to do mental math and think like 100*360 will give you an aprox answer
Evaluate the expression below
(8.1 + 7.9)x – (25 ÷ 5)
