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Sergio039 [100]
2 years ago
6

Karen is typing a 4,000 word essay. She can type at about 30 words per minute. If she types for 45 minutes on Monday and 55 minu

tes on Tuesday, about how many words will she still have to type to finish her essay?
Mathematics
1 answer:
horrorfan [7]2 years ago
8 0

Answer:The number of words that she would still have to type to finish her essay is 1000

Step-by-step explanation:

Karen is typing a 4,000 word essay. She can type at about 30 words per minute. This means that if her rate remains constant, the total number of minutes that it will take her to finish would be

4000/30 = 133.33 minutes.

If she types for 45 minutes on Monday, it means that the total number of words that she typed on Monday would be

45 × 30 = 1350 words

If she types for 55 minutes on Tuesday, it means that the total number of words that she typed on Tuesday would be

55 × 30 = 1650 words

Total number of words typed on Monday and Tuesday would be

1350 + 1650 = 3000 words

The number of words that she would still have to type to finish her essay would be

4000 - 3000 = 1000 words

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Answer:

A. 6y

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Find two positive consecutive odd integers such that square of the smaller integer is 10 more than the larger integer
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Let 2n+1 be the smaller integer. The larger integer is then 2n+3, and we have

(2n+1)^2=10+(2n+3)\implies4n^2+4n+1=2n+13

\implies4n^2+2n-12=0

\implies2n^2+n-6=0

\implies(2n-3)(n+2)=0

\implies 2n-3=0\text{ or }n+2=0

\implies n=\dfrac32\text{ or }n=-2

We omit n=-2, since 2(-2)+1=-3 is negative.

Then for n=\dfrac32 we find 2\left(\dfrac32\right)+1=4, but this is not odd.

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Step-by-step explanation:

The slope formula is useful for finding slope.

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Now you just need to find an answer choice who has these numbers.Lets check it out!

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C) None of these are multiples of 7 except 7 so this is also incorrect

D) This is correct because they are all multiples of 7

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