Which of the following expressions is equivalent to -10? 3 - 7 -7 + 3 7 - 3 -3 - 7

10 answers
Question:

Which of the following expressions is equivalent to -10?
3 - 7
-7 + 3
7 - 3
-3 - 7

Answers

The last one if -3 + (-7)

Choise B: [tex]-1.3+1.9[/tex]

Step-by-step explanation:

For this exercise you must remember the multiplication of signs:

[tex](+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-[/tex]

 

By definition, equivalent expression have the same value.

Then, you can find an equivalent expression to the expression provided in the exercise by simplifying it.

So, given:

[tex]-1.3 - (-1.9)[/tex]

To simplify it, you can distribute the negative that is located outside of the parentheses (in order to eliminate the parentheses).

Applying this procedure, you get the following equivalent expression:

[tex]-1.3 - (-1.9)=-1.3+1.9[/tex]

Therefore, as you can notice, the expression obtained matches with the one shown in Choice B.

Choise B: [tex]-1.3+1.9[/tex]

Step-by-step explanation:

For this exercise you must remember the multiplication of signs:

[tex](+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-[/tex]

 

By definition, equivalent expression have the same value.

Then, you can find an equivalent expression to the expression provided in the exercise by simplifying it.

So, given:

[tex]-1.3 - (-1.9)[/tex]

To simplify it, you can distribute the negative that is located outside of the parentheses (in order to eliminate the parentheses).

Applying this procedure, you get the following equivalent expression:

[tex]-1.3 - (-1.9)=-1.3+1.9[/tex]

Therefore, as you can notice, the expression obtained matches with the one shown in Choice B.

D

Step-by-step explanation: -12*3= 36x

-3/4*-12 = +9 so, D

This expression is equivalent to -36x+9.

Step-by-step explanation: We have to multiply through out by -12 in order to remove the brackets and then write the answer.

=12(3x-3/4)

= -36x+9

[tex]\frac{ - 1}{3} (6x + 15) - 3 \\ \\ 1. \: \frac{ - 6x + 15}{3} - 3 \\ 2. \: \frac{ - 3(2x + 5)}{3} - 3 \\ 3. \: - (2x + 5) - 3 \\ 4. \: - 2x - 5 - 3 \\ 5. \: - 2x + ( - 5 - 3) \\ 6. \: - 2x - 8[/tex]

[tex]\frac{ - 1}{3} (6x + 15) - 3 \\ \\ 1. \: \frac{ - 6x + 15}{3} - 3 \\ 2. \: \frac{ - 3(2x + 5)}{3} - 3 \\ 3. \: - (2x + 5) - 3 \\ 4. \: - 2x - 5 - 3 \\ 5. \: - 2x + ( - 5 - 3) \\ 6. \: - 2x - 8[/tex]

An equivalent expression is

-36(x-1/4)

Step-by-step explanation:

Step one

This problem bothers factorization of linear expression

Step two

Given the expression

-12(3x-3/4)

Step three

We can actually factor out some figures from the terms in the bracket

Say we factor out 3 we have

-12*3(x-1/4)

-36(x-1/4)

Hence the equivalent expression to

-12(3x-3/4)

is - 36(x-1/4)

answer:

-3-7

step-by-step explanation:

3-7 would be -4, -7+3 would be -4, 7-3 would be 4, and finally -3-7 would be -10.

D. -36x + 9

Step-by-step explanation:

[tex]-12[3x - \frac{3}{4}] \\ -36x + 9[/tex]

I am joyous to assist you anytime.

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