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guapka [62]
3 years ago
14

Please help. I’ll mark you as brainliest if correct!

Mathematics
1 answer:
In-s [12.5K]3 years ago
8 0

Answer:

8

Step-by-step explanation:

f^-1(x) =dy/dx

dy/dx(8x+9)=8

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Mars2501 [29]

$19.4

Step-by-step explanation:

Simple Interest=SI

Principle(deposit)=P(97)

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Time= T(5)

SI=P•R•T

SI=97x0.04x5

SI=19.4

Interest earned = $19.4

5 0
3 years ago
Thomas bought several paintbrushes for $4 each. He paid with a $20 bill. The expression 20 – 4n is used to determine how much ch
Tresset [83]

Answer:

the variable n represents how many of the product thomas bought

Step-by-step explanation:

20 dollars is the initial amount of money, and for every paintbrush, you have to subtract 4 dollars from thomas's initial amount, and the result of the subtraction is the amount of change he will recieve.

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julia-pushkina [17]

Answer:

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Step-by-step explanation:

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SashulF [63]

Answer:

1200 seconds per 20 minute study session

Step-by-step explanation:

20 min x 60 sec = 1200 seconds

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