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ankoles [38]
3 years ago
7

Ms. Peterson wrote the expression below on the chalkboard for her class. She asked the students to write an equivalent expressio

n using no more than one set of parentheses.
4(3x+5y+2z)+3(x−z) ​​

​

• Tom wrote 12x+20y+8z

​

• Jenna wrote 5(3x+4y+z)

​

• Chris wrote 15x+20y−5z

​

Which, if any, of the three students wrote an expression that is equivalent to Ms. Peterson’s expression?

​

​Answer ​_______ wrote an equivalent expression.

​Show your work to prove which expressions, if any, are equivalent.
Mathematics
2 answers:
Tems11 [23]3 years ago
5 0
Chris wrote an equivalent expression.

12x+20y+8z+3x-3z
15x+20y-5z
Diano4ka-milaya [45]3 years ago
5 0

Answer:

 

15x+20y-5z

12x+20y+8z+3x-3z

Chris wrote the equivalent expression

Step-by-step explanation:

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List the next four multiples of the fraction 7/12
choli [55]
<h2>Hello!</h2>

The answer is:

\frac{14}{12},\frac{21}{12},\frac{28}{12},\frac{35}{12}

<h2>Why?</h2>

Let's explain with an example the definition of a multiple.

Multiple of the number 1 are: 1, 2, 3, 4, 5 and so...

Multiple of the number 3 are: 3, 6, 9, 12, 15 and so...

A multiple of a number is the repeated sum of itself, from the example:

Multiple of the number 1 are: Itself, (1+1), (1+1+1), (1+1+1+1), (1+1+1+1+1) and so...

Therefore,

Multiple of \frac{7}{12} are:

\frac{7}{12} =\frac{7}{12}(itself)=\frac{7}{12}*1 \\\\\frac{14}{12}= \frac{7}{12}+\frac{7}{12}=\frac{7}{12}*2\\\\\frac{21}{12}=\frac{7}{12}+\frac{7}{12}+\frac{7}{12}=\frac{7}{12}*3\\\\\\\frac{28}{12}=\frac{7}{12}+\frac{7}{12}+\frac{7}{12}+\frac{7}{12}=\frac{7}{12}*4\\\\\frac{35}{12}=\frac{7}{12}+\frac{7}{12}+\frac{7}{12}+\frac{7}{12}+\frac{7}{12}=\frac{7}{12}*5

Have a nice day!

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A research firm wants to determine whether there’s a difference in married couples between what the husband earns and what the
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Answer:

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Step-by-step explanation:

The reason for using the two sample t procedure is that it is mention in the statement that the firm takes a random sample of married couples and measure their annual salary and standard deviations are unknown and they are estimated by using the collected sample of data. Also there are two population in the data. Population one is the annual salary of husband and population two is the annual salary of wife and these are compared using two sample t procedure.

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levacccp [35]
13.5·18=243
Base* Hight= Answer 

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ch4aika [34]

Answer:

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Step-by-step explanation:

We can take advantage of the ratio by dividing 40 by 8, giving us that every 1 in the ratio = 5. So we can multiply 2 x 5 = 10 and 1 x 5 = 5.

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