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cupoosta [38]
3 years ago
9

Please help!!! 3(x – 10) = -9

Mathematics
2 answers:
sergey [27]3 years ago
3 0

Answer:

The answer is x = 7

Step-by-step explanation:

Divide each term by  3  and simplify. Move all terms not containing  x  to the right side of the equation.

Rainbow [258]3 years ago
3 0

Answer:

\huge\boxed{x=7}

Step-by-step explanation:

In order to solve for x, our goal is to isolate it on one side of the equation. We can do this by reversing the equation.

Let's apply the distributive property on the left side:

(3 \cdot x) + (3 \cdot -10) = -9\\\\3x-30=-9

Add 30 to both sides:

3x - 30 + 30 = -9 + 30\\\\3x = 21

Divide both sides by 3:

3x \div 3 = 21 \div 3\\\\x = 7

So x = 7.

Hope this helped!

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Step-by-step explanation:


7 0
3 years ago
X² + y² = 34<br>x + y =8​
Nataly [62]

Step-by-step explanation:

{x}^{2}  +  {y}^{2}  = 34 \\ x + y = 8 \\ x = 8 - y \\ substitute \: x \: in \\  {x}^{2}  +  {y}^{2}  = 34 \\  {(8 - 4)}^{2}  +  {y}^{2}  = 34 \\  {(8 - 4) }^{2}  =  {y}^{2}  - 16y + 64 \\   {y}^{2}  - 16y + 64 +  {y}^{2}  = 34 \\  {2y}^{2}  - 16y + 64 = 34 \\ {2y}^{2}  - 16y + 64  - 34 = 0 \\  {2y}^{2}  - 16y + 30 = 0 \\ 2 {y}^{2}  - 6y - 10y + 30 = 0 \\ (2 {y}^{2}  - 6y) - (10y + 30) = 0 \\ 2y(y - 3) - 10(y - 3) = 0 \\ (2y - 10)(y - 3) \\ 2y = 10 \\ y  = \frac{10}{2}  \\ y = 5 \\ or \\ y = 3 \\ if \: y = 5 \:  \: x = 3 \\ if \: y = 3 \:  \:  x = 5

4 0
3 years ago
I NEED HELP ASAP!!!!!
zavuch27 [327]

√y

Step-by-step explanation:

The question given is;

\frac{y^{\frac{3}{4} } }{y^{\frac{1}{2} } }

This can be written as;

y^{\frac{3}{4} } /y^{\frac{1}{2} }

Apply law  indices where you divide same base, subtract the powers

y^{\frac{3}{4} -\frac{1}{2} } \\\\\\y^{\frac{1}{2} } \\\\\\\sqrt{y}

Learn More

Indices: brainly.com/question/12685658

Keyword : rational exponents,radical expressions,integer

#learnwithbrainly

3 0
3 years ago
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