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guapka [62]
3 years ago
8

Simplify 5^-2 x 5^5 x 5

Mathematics
1 answer:
rosijanka [135]3 years ago
5 0

Answer:

e

Step-by-step explanation:

2

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A friend has a 83% average before the final exam for a course. That score includes everything but the final, which counts for 25
Klio2033 [76]

Answer:

\mathrm{Best\:course\:grade\:possible:\:}87.25\%,\\\mathrm{Minimum\:score\:on\:final\:to\:earn\:at\:least\:a\:75\%\:for\:the\:course:\:}51\%

Step-by-step explanation:

Assuming the maximum score for the final is 100\%, we can multiply each score by its respective course weight and add them together to give a final score. If your friend did receive this maximum score of 100\%, their overall grade for the course would be:

83(1-0.25)+100(0.25)=\fbox{$87.25\%$}.

To find the minimum score they need to earn a 75% for the course, we set up the following equation:

83(1-0.25)+x(0.25)=75, where x is the minimum score she needs.

Solving, we get:

62.25+x(0.25)=75,\\x(0.25)=12.75,\\x=\fbox{$51\%$}.

8 0
3 years ago
Wouk out (-5) + (-2)​
PolarNik [594]

Answer:

-7

Step-by-step explanation:

-5   +    -2   =     is the same as -5  -   (+2), so the answer is -7

7 0
3 years ago
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Raleigh went to a gaming arcade for his birthday. His parents gave him $55 to spend. He purchased $14.25 in
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Answer:

23 games

Step-by-step explanation:

40.75 divide by 1.25 comes out 23.28

8 0
3 years ago
Read 2 more answers
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