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Nutka1998 [239]
3 years ago
10

In morning Emily studied 40 minutes for a math exam. Later that evening Emily studied for x more minutes. Write an equation that

represents the total number of minutes y emily studied for the math exam.
Mathematics
1 answer:
Ratling [72]3 years ago
7 0
40+x=y could be the answer
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3b 2a=5a−6 solve the equation for a in terms of <br> b.
oee [108]
Is it 3b-2a=5a-6
or
3b+2a=5a-6

you are missing the sign of 2a
4 0
3 years ago
Select the correct answer from each drop-down menu.
RSB [31]

Evidence are simply facts to support a claim, while counterexamples are instances to show the contradictions in a claim

<em>The question is incomplete, as the required drop-down menus are missing. So, I will give a general explanation</em>

<em />

To show that a statement is true, you need evidence.

Take for instance:

\mathbf{if\ a^2 = 4,\ then\ a = 2}

The evidence that the above proof is true is by taking the <em>squares of both sides of </em>\mathbf{a = 2}

\mathbf{a^2 = 2^2}

\mathbf{a^2 = 4}

However, a counterexample does not need a proof per se.

What a counterexample needs is just an instance or example, to show that:

\mathbf{if\ a^2 = 4,\ then\ a \ne 2}

An instance to prove that: \mathbf{if\ a^2 = 4,\ then\ a = 2} is false is:

\mathbf{a = -2}

Hence, the complete statement could be:

<em>In a direct proof, evidence is used to support a proof . On the other hand, a counterexample is a single example that shows that a proof is false.</em>

<em />

Read more about evidence and counterexample at:

brainly.com/question/88496

5 0
2 years ago
Can you give an example of equations when you are given the constant of proportionality?
aleksandr82 [10.1K]
Example:
Proportionality=1
5=5x
Divide both sides by 5 , and you get 1=x,
so the proportionality is 1
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3 years ago
How many gal is in 32 qt?
spin [16.1K]
There are 8 gallons in 32 quarts becuase 4 quarts = 1 gallon so 32 divided by 4 is 8. Hope this helped! :)
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4 years ago
CALCULATOR
Drupady [299]

Answer:  d(r) = 5(0.87)^r

Step-by-step explanation:

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3 years ago
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