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rewona [7]
3 years ago
7

If f(x) = 3x + 2, what is f(5)?​

Mathematics
2 answers:
Helen [10]3 years ago
7 0

Answer:

17

Step-by-step explanation:

3(5) + 2 = 17

15 + 2 = 17

MrRa [10]3 years ago
5 0

Answer:

f(5) = 17

Step-by-step explanation:

plug in 5 in the x so 3(5)+2 =17

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A man travels from A to B at 4 km/h and from B to A at 6 km/h. The total journey takes 45 minutes. Find the distance travelled.
lubasha [3.4K]

Answer:

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What are the domain and range of the function below?
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The domain and range is all real numbers.

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AnnZ [28]

Answer:

A: 6x^2(x^8-16)

B: 6x^2(x^4+4)(x^2+2)(x^2-2)

Step-by-step explanation:

<u>A:</u>

Our expression is 6x^{10}-96x^2. We need to find some common factors. Clearly, we can see that both terms share the x² part, so we can definitely take that out:

6x^{10}-96x^2

x^2(6x^8-96)

Let's see if 96 is divisible by 6:

96 ÷ 6 = 16; since there's no remainder / the remainder is 0, we know 96 is divisible by 6, so we can also factor out 6:

x^2(6x^8-96)

6x^2(x^8-16)

Thus, the answer to part A is 6x^2(x^8-16).

<u>B:</u>

Look at the x^8-16 part of the above factored expression. Notice that it is a difference of squares (because x^8=(x^4)^2 and 16 = 4²), so we can write this as:

x^8-16

(x^4+4)(x^4-4)

Now take a look at the (x^4-4) part. Again, it's a difference of squares because x^4=(x^2)^2 and 4 = 2², so rewrite that as:

x^4-4

(x^2+2)(x^2-2)

Put it all together:

6x^2(x^4+4)(x^2+2)(x^2-2)

Thus, the answer to part B is 6x^2(x^4+4)(x^2+2)(x^2-2).

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