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otez555 [7]
3 years ago
8

There are 5 milliliters of compound A used for every 4 milliliters of compound B. If a chemist wants to make 495 milliliters, ho

w many milliliters of compound A are needed
Mathematics
1 answer:
bija089 [108]3 years ago
8 0

Answer:

275

Step-by-step explanation:

Since there are 4 mm of B for every 5 mm of A that means there are 9 parts in that. Dividing 495 by 9 you get 55 which is how much of each part of the compound there is. Since there are 5 mm of A in each part of A you multiply 5 by 55 to get 275 which is your answer.

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Harlamova29_29 [7]

Answer:

f(-4) = 72, f(x + 5) = 3x² + 23x + 36

Step-by-step explanation:

f(-4) = 3(-4)² - 7(-4) - 4

      = 48 - (-28) - 4

f(-4) = 72

f(x + 5) = 3(x + 5)² - 7(x + 5) - 4

           = 3(x + 5)(x + 5) - 7(x + 5) - 4

           = 3(x² + 10x + 25) - 7(x + 5) - 4

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f(x + 5) = 3x² + 23x + 36

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3 years ago
Use the information to answer the question.
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Answer:

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Step-by-step explanation:

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3 years ago
Which place value would you look to compare 225998 and 225988
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225998 225988
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11 family members are going on a trip together. They have cars that only fit 4 people how many cars will they need to take?
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Does anyone know how to do this question ??
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