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Lunna [17]
3 years ago
14

A test has 40 questions. Denise finished 2\5 of the questions in the first 10 minutes and 1\2 of the total questions in the next

15 minutes. How many questions had Denise answered after 25 minutes?
Mathematics
1 answer:
leonid [27]3 years ago
8 0

Answer:

28 questions answered.

Step-by-step explanation:

40(2/5) is 16 questions.

40-16 is 24 questions left.

24(.5) is 12 questions.

16+12 gets you 28 questions.

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Answer:

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Andrews [41]
Break up chain with AND statement:

(2/3)t - 1 < t + 7 AND <span>t + 7 ≤ -2t + 15

left side, we solve for t
</span>
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(2/3)t - t < 7 + 1
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t > -24

right side, we solve for t</span>
<span>t + 7 ≤ -2t + 15
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So our answer would be </span>
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as an interval, this is
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(-24, 8/3]</span>
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4 years ago
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Step-by-step explanation:

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Step-by-step explanation:

4 0
3 years ago
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Step-by-step explanation:

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