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CaHeK987 [17]
3 years ago
11

If f(x)=3x-15, then f^-1(x) = solve for x please

Mathematics
1 answer:
amid [387]3 years ago
5 0
1.  Replace f(x) with y:  y = 3x - 15
2.  Interchange x and y:  x = 3y - 15
3.  Solve this for y:  3y = x + 15, and y = (x + 15)/3
4.  Replace y with 

   -1                -1
 f   (x):           f   (x) = (x + 15) / 3            (answer)
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Answer:

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3 years ago
Which constants could each equation be multiplied by to eliminate the x-variable using addition in this system of equations? 2 x
Sever21 [200]

Answer:

3. The first equation can be multiplied by 3 and the second equation by 2.

Step-by-step explanation:

2 x + 3 y = 25 (1)

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4 0
4 years ago
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A batch of snack mix made of dried fruit and nuts contain 744G of nuts the ratio of nuts to dried fruit by weight is 12 to 13 ho
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In a bag of snack mix:

n = nuts       d = dried fruit

n = 744g        d = ???g

Ratio Nuts/Dried fruit = 12/13

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If 744 is 12 parts then 744/12 is 1 part

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hope it helps :)

6 0
3 years ago
Please answer this correctly without making mistakes
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Answer:

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total burgers = 554 + 5,394 = 5,948

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6 0
3 years ago
Will mark brainliest if correct (surface area question)
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6 0
3 years ago
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