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mylen [45]
3 years ago
10

Given f(x)=2x^2−3 and g(x)=x+4. What is (fg)(x) ?

Mathematics
1 answer:
kaheart [24]3 years ago
3 0
To solve a composite function like this one you have take whatever g(x) is and substitute it for every x in f(x).

f(g(x))= 2(x+4)^2-3


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What is the value of each expression?
Maru [420]

Answer:

1. -3   2. 3

Step-by-step explanation:

Evaluate each expression is very simple concept in math. When you substitute a particular value for each variable and then act the operations called evaluating expression.

8 0
3 years ago
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State if the two triangles are congruent. if they are state how you know.
nlexa [21]
1) The triangles are congruent by SSS.

The two tick marks indicate two pairs of congruent sides; it is evident that the third side is congruent by the way the diagram is drawn - the bases of the triangles are together and appear to be the same length.

2) The triangles are congruent by SAS.

The two pairs of tick marks indicate congruent sides, and their included angles are congruent because they are vertical angles, and vertical angles are always congruent.
5 0
2 years ago
Please help! Ralph buys a computer for $675. The sales tax rate is 6%. How much did Ralph pay for the computer?
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Answer:

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Step-by-step explanation:

..........

4 0
2 years ago
Please check these please
antoniya [11.8K]

-5x=60

The first thing we want to do is to divide -5 on both sides. We do this because -5x, is the same as -5 times x and we want to do the inverse of that.

After we divide on both sides, we get    x=60/-5

We know that 60 divided by -5 is -12.

Therefore our answer is:      x=-12

----------------------------------------------------------------------------------------------------------

5= n + 2

We always want to get the variable to be alone, so if we subtract by 5 we would be doing the opposite of getting the variable alone. Although, if we subtract by 2 on both sides, we would get the variable alone and the answer would be 3=n

Therefore our answer is:       False

----------------------------------------------------------------------------------------------------------

2(x-7)

By looking at this question, we see x being subtracted by 7. Then we see that 2 is being multiplied to that.

Therefore our answer is:        C

----------------------------------------------------------------------------------------------------------

The product of a number and 4 increased by 8

In these types of questions, it's smart to break it up. We will start with the product of a number and 4. We know that a number is a variable and if we look at the multiple choice answers we can see that the variable they chose to use is n. We also know that a product is when numbers get multiplied. So that means 4 and n get multiplied which turns into 4n.

For the other part of the problem, we know that increased by 8 means added my 8. Now that we got our answers, we put then together.


Therefore our answer is:       A    4n+8

----------------------------------------------------------------------------------------------------------

Pls give a like if this helped you!!!

4 0
2 years ago
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HELP ME!!!!! Which of the following is the solution to the inequality below!!!!
melamori03 [73]
\bf -3(x-3)\ \textgreater \ 5-5x\implies -3x+9\ \textgreater \ 5-5x\implies 2x\ \textgreater \ -4
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x\ \textgreater \ \cfrac{-4}{2}\implies x\ \textgreater \ -2
3 0
2 years ago
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