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Mekhanik [1.2K]
3 years ago
9

Which expressions are equivalent to 5x - 15? Select three options.

Mathematics
1 answer:
Zigmanuir [339]3 years ago
8 0

Answer:

-5(x-3)

-5(3-x)

-3(-5+2x)+x

Step-by-step explanation:

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Which are undefined terms that can be used to define other terms?
zubka84 [21]

Answer:

Point, Line, Plane

Step-by-step explanation: They are undefined terms because its is easier to define them using examples rather than word for word

5 0
3 years ago
A lemonade stand sells drinks in two sizes, small and medium. In the span of 1 hour, the stand sold 72 drinks. The ratio of smal
Mashutka [201]

Answer:

The total amount of money received at the lemonade stand was $49.50

Step-by-step explanation:

Let

x ---> the number of small drinks sold

y ---> the number of medium drinks sold

we know that

The stand sold 72 drinks

so

x+y=72 ----> equation A

The ratio of small drinks to medium drinks sold was 5:3

\frac{x}{y}=\frac{5}{3}

x=\frac{5}{3}y ----> equation B

substitute equation B in equation A

\frac{5}{3}y+y=72

\frac{8}{3}y=72\\\\y=72(3)/8\\\\y=27

Find the value of x

x=\frac{5}{3}(27)=45

Find out the total amount of money received at the lemonade stand

0.50(45)+1.00(27)=\$49.50

3 0
3 years ago
Mike ate 1 3 of a bag of peanuts at the game, and on the way home he ate 1 3 of what was left. How much of the bag of peanuts di
svlad2 [7]

Mike ate 1 / 3 of a bag of peanuts at the game, then there left

1-\dfrac{1}{3} =\dfrac{3}{3} -\dfrac{1}{3}=\dfrac{2}{3}.

On the way home he ate 1 / 3 of what was left, that is he ate 1 / 3 from 2 / 3 and this is

\dfrac{1}{3} \cdot \dfrac{2}{3} =\dfrac{1\cdot 2}{3\cdot 3} =\dfrac{2}{9}.

On the way home Mike ate 2 / 9 of a bag of peanuts.

Answer: Correct choice is D.

7 0
3 years ago
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Explain The question with more detail
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<h2><u>Answer:</u></h2><h2>\boxed{cos(y)=-sin(y),sin(x)=cos(x)}</h2><h2 /><h2><u>Solution Steps:</u></h2>

______________________________

<h3>(Below)</h3>

5 0
3 years ago
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