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Ksju [112]
2 years ago
15

Helpp what is 3(1-9a)+22a=2(2a-9)-15

Mathematics
2 answers:
Klio2033 [76]2 years ago
6 0

Answer:

a = 4

Step-by-step explanation:

1. Expand

2. Simplfy

3. Add 5a to both sides.

4. Simplify again

5. Add 33 to both sides.

6. Divide both sides by nine

7. Switch the sides up.

Pachacha [2.7K]2 years ago
3 0

Answer:

a=4

Step-by-step explanation:

3-27a+22a=4a-18-15

3-5a=4a-33

3=4a+5a-33

3+33=9a

36=9a

a=36/9

a=4

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Eric bought a canoe for $333.75. The sales tax was 5.25%. What was his total cost?
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Answer:

333.80

Step-by-step explanation:

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3 years ago
PLEASE HELP WITH MATHH
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Answer:

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Step-by-step explanation:

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let m angle A = 40 degrees. If angle B is a complement of angle A and angle C is a supplement of angle B, find these measures
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3 years ago
Read 2 more answers
A person can see the top of a building at an angle of 65°. The person is standing 50 ft away from
zhannawk [14.2K]

9514 1404 393

Answer:

  (b)  112.2 ft

Step-by-step explanation:

The relevant trig relation is ...

  Tan = Opposite/Adjacent

For the given geometry, this becomes ...

  tan(65°) = (height above eye level)/(50 ft)

Then we have ...

  (height above eye level) = (50 ft)tan(65°) = 107.2 ft

Adding the height of eye level will give us the height of the building.

  building height = (eye level height) + (height above eye level)

  building height = (5 ft) + (107.2 ft)

  building height = 112.2 ft

6 0
2 years ago
Explain why their are no solutions to the system of inequalities <br> y ≤2x-5 <br> y ≥2x+1
rosijanka [135]

Answer:

Sorry this is late and I think this is right.

They are both parallel, they have the same slope, and do <em>not </em>intersect. If you were to draw a slope out for it, you would find this to be true.

For example: Say the question called for you to explain why there aren't any solutions to these system of inequalities:

<em>y < - 1/2x -3</em>

<em>y > 1/2x + 2</em>

<em>y= -x/2 -3</em> and <em>y= -x/2 + 2 </em>have the same exact slope, are parallel, and never intersect. The first line is 5 units below the second line when x = 0. Because the lines are parallel, it is always below the second line. The solutions of y < - x/2 -3 are the points in the plane below the first line. The solutions of y > 1/2 + 2 are points above the second line.

I hope this helps you. Good luck on whatever you're working on and stay safe! Please let me know if this helped you or didn't.

7 0
3 years ago
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