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Lesechka [4]
3 years ago
9

2x + 7= -11 please help

Mathematics
2 answers:
Dvinal [7]3 years ago
6 0

Answer:

x = -9

Step-by-step explanation:

You are solving for x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

First, subtract 7 from both sides:

2x + 7 (-7) = -11 (-7)

2x = -11 - 7

2x = -18

Next, divide 2 from both sides:

(2x)/2 = (-18)/2

x = -18/2

x = -9

x = -9 is your answer.

~

Margaret [11]3 years ago
6 0

Answer:

x = -9

Step-by-step explanation:

2x + 7 = -11

(2x + 7) - 7 = -11 - 7

2x = -18

(2x)/2 = -18/2

x = -9

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2 years ago
4x - 3 = 2x + 7 what would the answer be??
TiliK225 [7]

Answer:

x = 5

Step-by-step explanation:

Step 1: Subtract 2x from both sides.

4x−3−2x=2x+7−2x

<u>2x−3=7</u>

Step 2: Add 3 to both sides.

2x−3+3=7+3

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Step 3: Divide both sides by 2.

2x/2 = 10/2

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5 0
3 years ago
The healthcare provider prescribes an IV solution of ampicillin 1 gram in 50 mL of DşW at 25 drops/minute. The nurse uses an inf
Morgarella [4.7K]

The infusion will be completed at 19:31

The medicine that the nurse is giving the patient is 1 gram of ampicillin diluted in 50 mL of dextrose water.

This means 50 mL + 1 mL = 51 mL. 1 gram of ampicillin = 1 mL considering all water-based substances have a density of 1gm/mL.

Now, the set delivers 15 ggt or drops per mililiter. Let's calculate the total drops in the 51 mL.

51mL x 15ggt =765 drops

Finally, we know the medicine is given at a rate of 25 drops per minute. Let's calculate the time:

  • 765 drops / 25 drops per minute = 30.6 minutes

This means the medicine it will take 30.6 minutes for the infusion to be completed and therefore the infusion will be completed at 19:31 (19:00 + 30.6 minutes = 19:30.6 or 19:31).

Learn more in: brainly.com/question/25281327

5 0
2 years ago
The given diagram can be used to prove the Pythagorean theorem. Which expression represents the total area of the largest square
Oksanka [162]

Answer:

C = a² + 2ab + b²

Step-by-step explanation:

From the diagram above,

Let the dimension of the square be

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Area of the square is A*B

A * B = (a + b) * (a + b)

Area = a² + ab + ab + b²

Area = a² + 2ab + b².

Therefore the expression that defines the area of the square is a² + 2ab + b².

3 0
3 years ago
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7 0
3 years ago
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