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iren [92.7K]
3 years ago
9

What is the answer to ... -5 - 3w = 7

Mathematics
1 answer:
Ierofanga [76]3 years ago
4 0

Answer:

w = -4

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

-5 - 3w = 7

<u>Step 2: Solve for </u><em><u>w</u></em>

  1. Add 5 to both sides:                    -3w = 12
  2. Divide -3 on both sides:              w = -4

<u>Step 3: Check</u>

<em>Plug in w to verify it's a solution.</em>

  1. Substitute:                    -5 - 3(-4) = 7
  2. Multiply:                        -5 + 12 = 7
  3. Add:                               7 = 7

And we have our final answer!

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Answer:

<h2>C.</h2>

Step-by-step explanation:

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<, ≤ - draw to the left

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3 0
3 years ago
A doctor orders 20 grams of a 52% solution of a certain medicine. The pharmacist has only bottles of 40% solution and bottles of
Anvisha [2.4K]
Try, please, this:
1) Imagine, that pharmacist used 'x' gr. of 40% solution and 'y' of 70% solution.
Together (20 gr. of 52% sol.) it will be x+y=20.
2) From other side, the pharmacist combined 40x and 70y gramms, after obtaining together it is 52(x+y) gramms. In other words 40x+70y=52(x+y)
3) 
\left \{ {{x+y=20} \atop {40x+70y=52(x+y)}} \right. \ =\ \textgreater \  \  \left \{ {{y=8} \atop {x=12}} \right.
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4 0
3 years ago
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List the integers that satisfy both these inequalities.<br> 2x + 9 &lt; 0<br> x&gt;-12
Shkiper50 [21]

We have been given two inequalities 2x+9 and x>-12. We are asked to find the integers that satisfy both inequalities.

Let us solve for our 1st inequality.

2x+9-9

2x

\frac{2x}{2}

x

Upon combining our both inequalities, we will get:

-12

This means that solution of our inequalities is x values greater than -12 and less than -4.5.

We know that integers between -12 and -4.5 are: -11,-10,-9,-8,7,-6,-5.

Therefore, our solution would be x=\{-11,-10,-9,-8,7,-6,-5\}.

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IgorLugansk [536]

4 Hours because 50 times 4 is 200 and 200+75 is 275

5 0
2 years ago
Read 2 more answers
Pls help me in this question
solong [7]

Answer:

x=28°

Step-by-step explanation:

supplementary angles equal 180°

So:

3x+2x+x+12=180°

6x+12=180

6x=168

x=28°

Therefore:

3x:

3(28)=84°

2x:

2(28)=26°

x+12:

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4 0
2 years ago
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