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3 years ago

Which statement best describes how to determine whether f(x) = x2 - x + 8 is an even function?

Mathematics

1 answer:

irakobra [83]3 years ago

3 0

Answer:

2nd option

Step-by-step explanation:

If f(x) is an even function , then

f(x) = f(- x)

f(x) = x² - x + 8

f(- x) = (- x)² - (- x) + 8 = x² + x + 8

Since f(x) ≠ f(- x) then f(x) is not an even function

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I need help on 1,2,3

vladimir2022 [97]

Answer:

1. 10x + 14

2. 2x + 11y - 7

3. -10x - 11

Step-by-step explanation:

$4x+5+7x-3+x+12=\\10x+14$

$(7x+9y-1)-(5x-2y+6)=\\7x+9y-1-5x+2y-6=\\2x+11y-7$

$-2(2x+5)-6x-1=\\-4x-10-6x-1=\\-10x-11$

4 0

3 years ago

Read 2 more answers

Solve the system using substitution. 5x-y=75 3y=x

musickatia [10]

5(3y)-y=75 -> 15y-y=75 -> 14y= 75 -> y= 75/14

3(75/14)=x -> x= 225/14 and y= 75/14

I'm completely wrong but i tried

6 0

3 years ago

Simplify i to the 37th power A-1 B- -1 C- -i D- i

Ivan

I believe the answer is D. Divide 37 by four and you get 9 remainder 1. I equals one.
Hope this helps mate.
Just remember that i to the fourth power is i.

4 0

3 years ago

Plz Simplify 5a-(3a-7)

lapo4ka [179]

5a-(3a-7)
Equals
7+ 2a

5 0

4 years ago

The diameter of the base of a cone measures 8 units. The height of the cone is 6 units. What is the volume of the cone in terms

Mekhanik [1.2K]

Answer:

V = 32 pi

Step-by-step explanation:

The volume of a cone is

V = 1/3 pi r^2 h

The radius is d/2 = 8/2 = 4

V = 1/3 pi (4)^2 * 6

V = 32 pi

5 0

3 years ago