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DerKrebs [107]
2 years ago
11

Translate the question into a mathematical expression. The quotient of two and a number times seven

Mathematics
1 answer:
goblinko [34]2 years ago
3 0

Answer:

2n * 7

Step-by-step explanation:

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Divide.<br>(10a^4-5a^3) / 5a
wolverine [178]
\boxed{\frac{10a^4-5a^3}{ 5a}=\frac{10a^4}{5a}-\frac{5a^3}{5a}=2a^3-a^2}
5 0
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:

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
2 years ago
Could someone pleaseeeeeee help?
exis [7]
The third choice is the answer
7 0
3 years ago
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Please hurry I’m being timed! (50 pts)
photoshop1234 [79]

Answer:

A

Step-by-step explanation:

An excluded value is any value of x that makes the denominator of the rational expression zero as this would make the expression undefined.

For expression A

\frac{x-3}{x^2-4}

The denominator will be zero when x² - 4 = 0

x² - 4 is a difference of squares, thus

(x - 2)(x + 2) = 0

x - 2 = 0 ⇒ x = 2

x + 2 = 0 ⇒ x = - 2

The excluded values of x are x = ± 2 ⇒ A

8 0
3 years ago
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Sergio039 [100]

Answer:

no 2197

Step-by-step explanation:

(13)^2(13)^-4(13)^5 = 13?

5 0
3 years ago
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