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kvasek [131]
3 years ago
15

What is 9x + 8 = 4x + 23

Mathematics
1 answer:
Dovator [93]3 years ago
8 0

Answer:

x = 3

Step-by-step explanation:

9x + 8 = 4x + 23

9x - 4x + 8 = 4x - 4x + 23

5x + 8 = 23

5x = 23 - 8

5x = 15

5x/5 = 15/5

x = 3

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Describe the location of square root 78 on a number line. Explain your reasoning.
Sergeeva-Olga [200]

Answer:

  between 8 and 9

Step-by-step explanation:

The square of 8 is 64, which is less than 78.

The square of 9 is 81, which is more than 78.

The square root of 78 will lie between 8 and 9 on the number line.

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√78 is near 8.832

3 0
3 years ago
Please explain step by step in full process
mafiozo [28]

Answer:

x = 120°

y = 60°

Step-by-step explanation:

✔️since, lines l and m, area parallel, therefore,

x = 120° (they are corresponding angles having matching corners. Thus, corresponding angles are congruent to each other)

✔️x + y = 180° (linear pair angles)

Plug in the value of x

120 + y = 180

Subtract 120 from each side of the equation

y = 180 - 120

y = 60°

7 0
3 years ago
I NEED HELP PLEASE, THANKS! :)
Alexus [3.1K]

Answer:

  22.8 m/s at 17.4°

Step-by-step explanation:

You want to find the resultant of ...

  3 cis 0° +20 cis 20° = (3, 0) +(18.794, 6.840) = (21.794, 6.840)

The magnitude is the root of the sum of the squares of the velocities in the horizontal and vertical directions:

  s = √(21.794² +6.840²) ≈ 22.8

The direction is found from the fact that the tangent of the angle is the ratio of vertical to horizontal coordinates:

  angle = arctan(6.840/21.794) ≈ 17.4°

The resultant velocity is 22.8∠17.4° meters per second.

7 0
3 years ago
what should max charge for a package of paper plates in his store if he bought them for $9.00 and wants to make a 75% profit?
polet [3.4K]
He should charge 15.75
5 0
4 years ago
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PLS ANSWER
djyliett [7]

Answer: reflection

Step-by-step explanation:

A reflection is like a mirror in the middle you can see they are the same in the line down the middle so <em>reflection </em>

8 0
3 years ago
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