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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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alisha [4.7K]

Answer:

32 water bottles

Step-by-step explanation:

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250 is how much more they need.

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x=31.25

You can't have half of a bottle... so round up to at least 32 water bottles

4 0
2 years ago
1/5x-2/3y=30<br> What is the value of the x in the equation when y=15
svetlana [45]

Answer:

\frac{1}{5} x -  \frac{2}{3} y = 30 \\  \frac{1}{5} x -  \frac{2}{3} 15 = 30 \\  \frac{1}{5} x -  \frac{30}{3}  = 30 \\  \frac{1}{5} x  -  10 = 30 \\  \frac{1}{5} x = 30 + 10 \\  \frac{1}{5} x = 40 \\ x = 40 \div  \frac{1}{5}  \\ x = 40 \times  \frac{5}{1}  \\ x = 40 \times 5 \\ x = 200

I hope I helped you^_^

8 0
3 years ago
Read 2 more answers
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son4ous [18]
9x+14=2x+35\\&#10;7x=21\\&#10;x=3
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Please help me chose the correct box’s
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The second box to the left side

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Three - tenths of x is 15
Studentka2010 [4]

Answer:

50

Step-by-step explanation:

50 / 10 = 5

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