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iVinArrow [24]
3 years ago
6

Simplify: 6(m+3n)-(7+4n)

Mathematics
1 answer:
stepan [7]3 years ago
4 0

6(m + 3n) - (7 + 4n)

6m + 18n - 7 - 4n

6m + 14n - 7

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Find the real solutions by graphing 4x^3-8x^2+x=0​
Rainbow [258]

Answer:

here ya go. Sorry if I wrong

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3 years ago
4. Solve the following system of equations for x.
Ber [7]

We are given the system of equations -:

\large{ \begin{cases} 2x + 3y =  - 14 \\ y = 6x + 22 \end{cases}}

Since the second equation is y-isolated equation. It can be substituted as y = 6x+22 in the first equation.

\large{2x + 3(6x + 22) =  - 14}

Expand 3 in the expression so we can combine like terms and isolate x-variable.

\large{2x + 18x + 66 =  - 14}

Then combine like terms.

\large{20x + 66 =  - 14}

Get rid of 66 from the left side by subtracting both sides by itself.

\large{20x + 66 - 66 =  - 14 - 66} \\  \large{20x =  - 80}

To finally isolate the variable, divide both sides by 20 so we can leave x only on the left side.

\large{ \frac{20x}{20}  =  \frac{ - 80}{20} }

Simplify to the simplest form.

\large{x =  - 4}

Normally, we have to find the y-value too but since we only find x-value. The answer is x = -4.

Answer

  • x = -4

I hope this helps! If you have any questions or doubts regarding my answer, explanation or system of equations, feel free to ask!

5 0
3 years ago
5 × -92 = <br> Just a quick response on how to solve this, thanks a ton!
Colt1911 [192]

Answer:

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Step-by-step explanation:

I multiply by splitting the numbers into digits. So for the 90, in my head I did 5 × 90, which is 450. Then I did 2 × 5, this is 10. Now I added those up to make 460. Considering the 92 is negative, the answer will also be negative.

8 0
4 years ago
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Step-by-step explanation:

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3 years ago
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Can someone help me with this page please.
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Answer:

1) positive

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6 0
4 years ago
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