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Mandarinka [93]
3 years ago
11

Find the following function. f(g(x)) if f(x)= x/(x-7) and g(x)=4/x

Mathematics
1 answer:
sdas [7]3 years ago
5 0
F(g(x)) = f(4/x) = (4/x)/(4/x - 7) = (4/x)/((4 - 7x)/x) = 4/x * x/(4 - 7x) = 4/(4 - 7x)
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How to solve this substitution​
Lena [83]
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substitute for x which is 5
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simplify :
4y-25=11

add 25 on both sides
4y-25=11
+25 +25
the 25 cancels out

so it would be 4y=36
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4/4 =36/4

which gives you (5,9)
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6 0
2 years ago
What is the value of a in the diagram below?​
adell [148]

Answer:

a=8

Step-by-step explanation:

We can use ratios of similar triangles to solve

The smaller triangle has sides a and 12  and the larger triangle has sides a+a+4  and 12+18  which combine to 2a+4  and 30

a               2a +4

--------- = -----------

12            30

Using cross products

30a = 12(2a+4)

30a = 24a +48

Subtract 24a from each side

30a -24a = 24a-24a +48

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Divide each sdie by 6

6a/6 =48/6

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7 0
3 years ago
The number line represents values for x. Which inequality BEST describes the included values? A) x < −4 B) x > −4 C) x ≤ −
NeX [460]

Answer:

x ≥ −4

The line is shaded to the right of −4 where the values are greater. The closed circle indicates that −4 is include

8 0
2 years ago
Read 2 more answers
The amount of money in Tara's account with respect to the day of the month was recorded for 31 days. The correlation coefficient
Lesechka [4]

Answer:

There is a strong, negative correlation between the amount of money in Tara's account and the day of the month.

Step-by-step explanation:

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r = -0.9870 is strongly negative.  So there is a strong, negative correlation between the amount of money in Tara's account and the day of the month.

6 0
3 years ago
Rewrite as a square or a cube: <br> 3 3/8 =_____ <br> 1 11/25=_____
kirza4 [7]
Unsure of what you want here.   If you want the square of 3 3/8, convert 
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And so on.

The cube of 3 3/8 is   (27/8)^3 = 19683/512.  You could also write that as 38.44 (which has been rounded off).
5 0
3 years ago
Read 2 more answers
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