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a_sh-v [17]
3 years ago
15

What is the value of 4x^2 + 5x . when x = 1

Mathematics
2 answers:
Lostsunrise [7]3 years ago
8 0

Answer:9

Step-by-step explanation:

First you would replace the x with 1. Then you would evaluate 1^ 2 which would be one. That would leave you with 4(1) + 5(1). Which is 9

Lynna [10]3 years ago
7 0

Answer:

9

Step-by-step explanation:

Just substitute the value of x onto the x variables in the equation

; 4(1)^2 + 5(1)

; 4 + 5

; 9

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A reflection maps the point (2, 3) to the point (2, -3).
Tresset [83]

Answer:

x axis

Step-by-step explanation:

We know the x value stays the same. If you were to graph the line y=3 and y=-3, you would see that it is a reflection over the x axis.

3 0
3 years ago
If f(x)=3x-2 find f-1 (13)​
SOVA2 [1]

Answer:

Firstly

f(x)=3x-2=y then

Interchanging x and y we get

x=3y-2

x+2=3y

y=(x+2)/3

f-1(x)=(x+2)/3

f-1(13)=(13+2)/3

f-1(13)=5

3 0
3 years ago
HELP I DON'T UNDERSTAND THIS AT ALL!!!
Hatshy [7]

D__ is 7.5<x

C is x<10

Step-by-step explanation:

just do the inequality and graph

7 0
3 years ago
Can you combine like terms without formally showing the distributive property? Explain.
blsea [12.9K]
Yes you can! Say you have 5(2 + x) + 3x. The answer would be 10+8x because when you use the distributive property you will end up getting 5*2 5*x and once you multiply, it's obvious 5 times 2 is 10 and 5 times x will equal 5x. Then you add 5x and 3x and get 8x. So, the simplified expression here is 10+8x. When you have this as an answer it's proving your answer right. You can without using the distributive property. We can have 10+5x+3x and it will be your simplified expression. It's the same thing with equations too.
6 0
3 years ago
What value of x makes the equation shown true? Show or explain what you did to get your answer. 5x – 1 = 19
Advocard [28]
5x-1=19
1st you add the one over to the 19 and you'll get 20
then you do 5x=20
divide the 5x over to the 20 and your final answer is 4.
5 0
3 years ago
Read 2 more answers
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