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Anettt [7]
3 years ago
13

If f(x) = 2х2 + 3 and g(x) = х2 -7, find (f- а)(x).

Mathematics
1 answer:
Lerok [7]3 years ago
7 0

Answer:

C. x^2 -4

Step-by-step explanation:

What you do is subtract the functions as said by

(f-g)(x).

so:

f(x)-g(x)

(2x^2+3) - (x^2 -7)

2x^2 -x^2 +3 - 7= x^2 -4

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Is the following statement true or false?
Kazeer [188]

Answer:

False

Step-by-step explanation:

Perpendicular angles create a 90°.

This is because two lines intersect to form a right angle,the lines are therefore perpendicular and creates a 90°.

<em>Thank</em><em> </em><em>u</em><em>.</em>

7 0
3 years ago
Complete the equation to show that 4.2÷0.35 is equal to 420÷35.
Alex

Answer:

12=12

Step-by-step explanation:

4.2÷0.35=420÷35

12=12

12-12=0

0=0

4 0
3 years ago
WILL GIVE BRAINLIEST ANSWER
Ad libitum [116K]
<span>2² + 4² ÷ 2<span>²

4 + 16 </span></span>÷ 4

4 + 4

8
7 0
3 years ago
Read 2 more answers
I really need help asap please
gizmo_the_mogwai [7]
We can use the substitution method to solve this problem.

The second equation is \sf y=2x, so we can plug in 2x for 'y' in the first equation:

\sf 5x-2y=3

\sf 5x-2(2x)=3

Multiply:

\sf 5x-4x=3

Combine like terms:

\sf x=3

This is the x-value of our solution, we can plug this into any of the two equations to find the y-value:

\sf y=2x

\sf y=2(3)

Multiply:

\sf y=6

This is the y-value of our solution. So our entire solution is (3, 6).
5 0
3 years ago
Based on survey results, the mean amount of credit card debt for U.S. adults under 35 is $8,724. This point estimate would be un
ira [324]

Answer:

Step-by-step explanation:

Given that for X the amount of credit card debt for U.S. adults under 35, is

having mean as 8724 dollars.  

For this point estimate to be unbiased and most accurate we must ensure that

i) The sample represents the population

ii) Samples are drawn at random

iii) Sample sizes are sufficienly large.

Hence we see that C is not right as college students cannot represent the entire population.  Tv poll cannot be said to be random since there may be a significant population who was not aware about this poll.  A and B are right but B is better with more sample size.

4 0
3 years ago
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