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AysviL [449]
3 years ago
15

If f(x) = 2х2 +1, what is f(x) when x = 3? оооо 19

Mathematics
1 answer:
jeka57 [31]3 years ago
7 0

Answer:

f(3) = 19

Step-by-step explanation:

Step 1: Define

f(x) = 2x² + 1

x = 3

Step 2: Substitute and Evaluate

f(3) = 2(3)² + 1

f(3) = 2(9) + 1

f(3) = 18 + 1

f(3) = 19

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Which of the following points is in the solution set of y < x^2-2x-8
enot [183]

Answer:

y < (x - 4)(x + 2)

so the critical points are -2 and 4

(-2,-1) will be in the solution

( 0,-2) will not  

(4,0) will not.

the answer is ((-2,-1)



3 0
3 years ago
Read 2 more answers
Plz help me ill give you brainlist
Ivan
So, plug in what you're given and solve
 x is -2
(3x) * 9 
(3 (-2)) * 9
-6 * 9
-54

then 
27(-2)
-54
For the first it's the same

for the second
x is 0
(3x) * 9
(3 (0)) * 9
0 * 9
0

27x
27(0)
0
For the second it's the same

x is 4
(3x) * 9 
(3(4)) * 9
12 * 9
108

27x 
27(4)
108

The given expressions are equivalent. This was proved in the diagram. 

Hope this helps :)
7 0
3 years ago
PLS answer every question
BARSIC [14]
There is nothing there except for a plain document
5 0
3 years ago
How do you solve the following using a distributive property?<br> 9(1-r)+3r=
tensa zangetsu [6.8K]

Answer:

9-6r

Step-by-step explanation:

Distribute the 9 into the parenthesis:

9(1-r)=9-9r

Add the 3r and combine like terms:

9-9r+3r=9-6r

8 0
3 years ago
Question 7
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The measure is 33 and 362 degrees
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