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klio [65]
3 years ago
8

Alisha's teacher usually includes lots of comments on student tests to help them understand why their answers were

Computers and Technology
2 answers:
Mnenie [13.5K]3 years ago
7 0

the answer is C: The comments could provide insight to  the topics the teacher feels are important to study

cestrela7 [59]3 years ago
5 0
The comments the Teacher leaves on the old test are usually the correct answers
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simplify the expression below and state the value of m for which the simplified expression is not defined 2m² + m - 15/ m² - 9​
motikmotik

Answer:

  • The simplified expression is: \frac{2m-5}{m-3}
  • The simplified expression is undefined for m=3

Explanation:

The given expression is:

\frac{2m^2+m-15}{m^2-9}

The numerator can be siplified by using factorization and denominator will be simplified using the formula

a^2-b^2 = (a+b)(a-b)

So,

= \frac{2m^2+6m-5m-15}{(m)^2-(3)^2}\\=\frac{2m(m+3)-5(m+3)}{(m-3)(m+3)}\\=\frac{(2m-5)(m+3)}{(m-3)(m+3)}\\=\frac{2m-5}{m-3}

A fraction is undefined when the denominator is zero. In order to find the value of m on which the simplified fraction will be undefined we will put denominator equal to zero.

So,

m-3 = 0 => m = 3

Hence,

  • The simplified expression is: \frac{2m-5}{m-3}
  • The simplified expression is undefined for m=3
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3 years ago
Why is it important to have a price assiociated in every product​
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Answer:

The wrong price can also negatively influence sales and cash flow. tbh there is no point to me  

Explanation:

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What is a Boolean Expression?
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( Lol. I’m in 7th grade doing college work, so this was fun to answer! )
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