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xxMikexx [17]
3 years ago
11

Help pls i suck at algebra

Mathematics
1 answer:
yuradex [85]3 years ago
6 0
I think it’s the last option
Hope that helped XD
Sorry if it’s wrong
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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
For what value of x is the rational expression below undefined? 3x-5/x-6
Fantom [35]
The answer is 6 as if you plug in 6 in the denominator (6)-6 is 0 which makes the fraction undefined

8 0
3 years ago
Read 2 more answers
Need help with geo please 20 points
Serjik [45]

Answer:

B.

Step-by-step explanation:

Option B is correct - angle ABE is less than 90 degrees, therefore it is acute, and angle DBC is greater than 90 degrees, therefore it is obtuse.

6 0
3 years ago
For every 10 fish you have, you need 5 gall how many gallons pf water do u have for 1 fish
frutty [35]
10/5 = 1/x
cross multiply
10x = 5
x = 5/10
x = 1/2...u need 1/2 gallon per fish
4 0
3 years ago
Find x.<br><br> please help with this question
kiruha [24]

Answer:

11.875

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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