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dybincka [34]
2 years ago
10

HELP Math will give 25 brainly points

Mathematics
2 answers:
aleksklad [387]2 years ago
7 0
51 degrees should be the correct answer
77julia77 [94]2 years ago
4 0

9514 1404 393

Answer:

  51°

Step-by-step explanation:

The angles where the expressions are given are a linear pair, so total 180°.

  (3x +15) +(10x +9) = 180

  13x = 156 . . . . . . . . . . . . . . . subtract 24, collect terms

  x = 156/13 = 12

Then the acute angle is ...

  3x +15 = 3(12) +15 = 36 +15 = 51

The stairs make an angle of 51° with the basement floor.

_____

<em>Additional comment</em>

Building code requires the rise to be not more than 8 and the run not less than 9, so the maximum angle is about 41.6°. A 51° staircase would not meet code.

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Morgarella [4.7K]
Answer: 3 11/12
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7 0
3 years ago
The circumference of a circle is 18 pi feet. What is the area in terms of pi?
Nastasia [14]

Answer:

I am not sure if this is right but the answer is

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3 0
2 years ago
Please please help me out with this problem
Hatshy [7]

Answer:

y = 3x - 4

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

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with (x₁, y₁ ) = (0, - 4) and (x₂, y₂ ) = (2, 2) ← 2 points on the line

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Note the line crosses the y- axis at (0, - 4) ⇒ c = - 4

y = 3x - 4 ← equation of line

6 0
3 years ago
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sleet_krkn [62]
C. multiply because of the order of operations
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What is the difference between “ and “ and “ or “ ?
Nata [24]

Answer:

And is an inclusive conjunction, meaning more can follow and exist at the same time, while or is an exclusive conjunction, meaning only one choice can exist at one time.

Step-by-step explanation:

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