5) x^2+3x-1. when x <= -2
3f (-5)= 3 (5^2+3 (-5)-1)
= 75-45-3
=27
-2 <x <6
2 (2)^x-1
4f (2)= 4. (2 (2)^2-1)
=16
x>6
f (10)= (3x+6)/x+2
= 36/12
=3
3f (-5)+4f (2)-f (10)
= 27+16-3
=40. 40 is the final answer
Good luck; )
Answer:
House B is 12.
Step-by-step explanation:
What you do is since it says that house A is twice as tall as house B and House A is 24 all you do is divide 24 by 2 to get 12 as your answer.
Answer:
ellie is 2 and genya is 58, explanation in picture attached
Answer:
not arithmetic
Step-by-step explanation:
An arithmetic sequence has a common difference d between consecutive terms.
Given
= 2n² - 1
Substitute in n = 1, 2, 3, 4 to generate the first 4 terms of the sequence
= 2(1)² - 1 = 2 - 1 = 1
= 2(2)² - 1 = 8 - 1 = 7
= 2(3)² - 1 = 18 - 1 = 17
= 2(4)² - 1 = 32 - 1 = 31
check the difference between consecutive terms
7 - 1 = 6
17 - 7 = 10
31 - 17 = 14
The differences are not common hence not an arithmetic sequence
It's rational because it is a repeating decimal. 20/6=3.33333333333333...