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Artist 52 [7]
3 years ago
10

Rajit buys 4 pairs of socks for $2.50 per pair. He pays with a $20 bill.

Mathematics
2 answers:
skelet666 [1.2K]3 years ago
7 0
$10.00 is his change.
sveta [45]3 years ago
5 0
2.50 x 4 = 10

20 - 10 = 10

so his change would be $10

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snow_tiger [21]

Answer:

13.63 miles per hour

Step-by-step explanation:

100 yards / 15 sec  converted to miles per hour

<u>100 yards</u> x <u> 60 sec</u>   x  <u> 60 min</u>   x  <u> 1 mile     </u>    =  13.63 miles/hr

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the mistake on Mrs Dukes is the conversion from miles to yards.

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3 years ago
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:

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Solving, we get:

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8 0
2 years ago
Must a function this is decreasing over a given interval always be negative over the same interval? Explain
aleksklad [387]

It is certainly possible for a function decreasing over a certain interval to be negative, but no rule that says it must be. On the other hand, where the function is decreasing, the rate of change of the function must be negative.


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

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− b + 13

Step-by-step explanation:

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