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3 years ago

Another Math Problem.

Mathematics

1 answer:

Xelga [282]3 years ago

5 0

For part A Amy's estimate is inaccurate because when adding fractions they must have the same denominators. Amy probably made the mistake of adding 1/4 and 1/3 without changing the denominators first which gave her 1/7. If she were to do it correctly then she would've ended up with 7/12 as her answer.

My work:

1/4=3/12
1/3=4/12
4/12+3/12=7/12

I hope this helps and if I gave any false information I apologize in advance.

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Write an algebraic expression for the sum of 3 coins and c coins.<br> Oct 3

Basile [38]

Answer:

3 + c

Step-by-step explanation:

You need to have the sum of 3 coins and 'c' coins. This means that you have to add 3 and c. You don't know what c is, so you write the sum as:

3 + c

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4 years ago

A bookbook can be classified as either non dash fictionnon-fiction or fictionfiction. Suppose that 9494% of booksbooks are clas

DIA [1.3K]

Answer:

a) 0.8836

b) 0.7339

c) 0.2342

Step-by-step explanation:

Books classified as fiction = 94% or 0.94 probability

Books classified as non-fiction = 1 - 0.94 = 0.06

a) for two books, we get: 0.94 * 0.94 = 0.8836 Probability

b) The probability that all five books are fiction is: 0.94^5

This equals 0.7339 Probability

c) Probability that one books is non-fiction, while the other 4 are fiction is determined in the following way:

Probability of non-fiction * probability of fiction^(number of books)

0.06 * 0.94^4 = 0.0468

This does not account for the order at which the non-fiction book shows up. Such as the non-fiction book being the first book picked, or in another case - the non-fiction book being the last picked.

Since there are 5 ways this could occur, the total probability will be calculated as shown: 0.0468 * 5 = 0.2342 Probability

3 0

4 years ago

Solve for .<br> Simplify your answer as much as possible.

ludmilkaskok [199]

Answer:

v=5.75

Step-by-step explanation:

7/8=v+3/10

first do cross multiplication to get

7×10=8(v+3)

70=8v+24

70-24=8v

46=8v

46÷8=v

v=5.75

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3 years ago

Does anyone know how to solve this?<br> The answer is B but can anyone explain it please

solniwko [45]

Answer: sorry no

Step-by-step explanation: sorry i dont want to explain it.

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3 years ago

Can someone pwease help meh ;((

kompoz [17]

Answer:

Step-by-step explanation:

Part A:

(400-325)/(5-0)

75/5= 15 is the slope

Part B:

(0, 325) (5, 400)

y - 325 = 15(x - 0)

Part C:

y = 15x + 325

Part D:

x = 12

y = 15(12)+ 325

y = 180 + 325

y = $505

6 0

4 years ago