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aev [14]
3 years ago
15

If f(x) = 5x + 4, which of the following is the inverse of (fx)?​

Mathematics
1 answer:
lys-0071 [83]3 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

let y = f(x) and rearrange making x the subject, that is

y = 5x + 4 ( subtract 4 from both sides )

y - 4 = 5x ( divide both sides by 5 )

\frac{y-4}{5} = x

Change y back into terms of x

f^{-1} (x) = \frac{x-4}{5}

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Evaluate the expression XY FOR X=8 and Y=4
vovangra [49]

Answer:

32

Step-by-step explanation:

XY means x times y

and x = 8 or x is 8

and y = 4 or y is 4

so 4 times 8 is 32

so

XY = 32

4 0
3 years ago
Earl runs 90 meters in 60 seconds. How many meters does Earl run per second? Earl runs meters per second.
Anna007 [38]

Answer:

1 1/2 meters

Step-by-step explanation:

8 0
2 years ago
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A local movie theater sells two bag sizes of popcorn. Both bags are in the shape of a rectangular prism. Bag A measures 4" long,
Natali5045456 [20]

Answer:

the height of bag b is 7

Step-by-step explanation:

first, find the volume of bag a.

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length * width * height = volume

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substitute the values into the formula

4 * 3.5 * 6 = volume

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the volume of bag A is 84

next, find the height of bag b

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length * width * height.

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h = 168/24

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8 0
2 years ago
Freddy is helping buy ingredients for salads for the school spaghetti dinner. He bought 10 pounds of onions at $0.69 per pound,
dezoksy [38]
Hey there,

Answer: Tomatoes 

If you multiply 10 x 0.69 (for onions) it would be 6.9
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Lastly, if you multiply 100 x 0.69 (for lettuce) if would be 69


Which are the most? Tomatoes.

~ Hope this helps, and if you have any questions or concerns, feel free to pm me or comment down below :)
3 0
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9. Which of the following relations is a function?
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