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Pavlova-9 [17]
2 years ago
7

Plz answer hurry. 20 points for right answer

Mathematics
2 answers:
BlackZzzverrR [31]2 years ago
8 0
First, we need to define the function of (fog)(x)
(fog)(x) = f(g(x))
it means we need to substitute the x in the function f(x) with g(x)

f(x) = x + 7
change x with g(x)
fog(x) = g(x) + 7
fog(x) = \cfrac{1}{x-13} + 7

equalize the denominators
fog(x) = \cfrac{1}{x-13} + 7
fog(x) = \cfrac{1}{x-13}+\cfrac{7(x-13)}{x-13}

simplify
fog(x) = \cfrac{7x-91+1}{x-13}
fog(x) = \cfrac{7x-90}{x-13}

Second, determine the domain of the function
If the function is in fraction form, the denominator of the fraction can't be equal to zero.
x - 13 ≠ 0
x ≠ 13
The domain is {x| x≠13}
The answer is last option
lapo4ka [179]2 years ago
3 0
Did You Figure This Out I Need Help Too. Lol
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3 years ago
Help??? I Don’t Understand
Andrews [41]
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A runner ran 20 miles in 150 minutes. If she runs at that speed, how long would it take her to run 6 miles? How fast is she runn
Nataly_w [17]
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4 0
3 years ago
If f(x) = 3x - 1 and g(x) = x + 2, find (f - g)(x).
Marat540 [252]

Answer:

(f - g)(x) = 2x - 3

Step-by-step explanation:

(f - g)(x) is defined as subtracting the whole g(x) function from the f(x) function.

Hence, we can define it as:

(3x - 1) - (x + 2)

= 3x - x - 1 - 2

= 2x - 3

Therefore, (f - g)(x) = 2x - 3.

Hope this helped!

6 0
2 years ago
Ms.jan brought in cookies for her class.She gave out half of them in the morning. At lunch,she gave out 12 more.She then had 1o
Nikolay [14]

Answer:

So we know that Ms. Jan had brought the class cookies and gave out half of them the cookies she had in all was 34 she then gave the class 12 in the morning and 22 cookies was left then at lunch it she gave out 12 more so 22-12 is 10

Step-by-step explanation:

34 cookies -12=22 cookies-12=10 cookies left.

I HOPE THIS HELPS :)

8 0
1 year ago
Read 2 more answers
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