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umka21 [38]
3 years ago
7

Find measure of angle A

Mathematics
2 answers:
Pachacha [2.7K]3 years ago
8 0

Answer:

116°

Step-by-step explanation:

3x-4+9x+17+6x-31=180

18x-18=180

+18 +18

18x=198

18x/18=198/18

x=11

a=9x+17

a=9(11)+17

a=99+17

a=116°

hopefully this helps :)

kipiarov [429]3 years ago
8 0

Angle A : 116°

<h3>Further explanation</h3>

The sum of all the angles in the triangle is 180°

∠A+∠B+∠C=180°

\tt 9x+17+3x-4+6x-31=180\\\\18x-18=180\\\\18x=198\\\\x=11\\\\A=9.11+17=116^0

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$7.50 per ticket. the theater earned $450 from ticket sales tuesday's performance. which equation can be used to find the number
Norma-Jean [14]

Answer:

450 ÷ 7.50 = t (tickets sold for Tuesday)

Step-by-step explanation:

this is simple 4th grade division...

4 0
3 years ago
Find the value of x in the following diagram,<br> 3x + 10<br> Here, B and D are points of tangency.
SVEN [57.7K]

<u>Given</u>:

The given circle with center at C. The lines AB and AD are tangents to the circle C.

The length of AB is (3x + 10)

The length of AD is (7x - 6)

We need to determine the value of x.

<u>Value of x:</u>

Since, we know the property of tangent that, "if two tangents from the same exterior point are tangent to a circle, then they are congruent".

We shall determine the value of x using the above property.

Thus, we have;

AB = AD

Substituting the values, we get;

3x+10=7x-6

Subtracting both sides of the equation by 7x, we get;

-4x+10=-6

Subtracting both sides of the equation by 10, we get;

-4x=-16

Dividing both sides of the equation by -4, we get;

x=4

Thus, the value of x is 4.

5 0
3 years ago
Evaluate x+3 squared by 2 - 6 when x = 4
Alisiya [41]

Answer:

43

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify.</em>

(x + 3)² - 6

<em>x</em> = 4

<u>Step 2: Evaluate</u>

<em>Follow Order of Operations.</em>

  1. Substitute in <em>x</em> [Equation]:                                                                                (4 + 3)² - 6
  2. (Parenthesis) Add:                                                                                            7² - 6
  3. Exponents:                                                                                                        49 - 6
  4. Subtract:                                                                                                            43
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2 years ago
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Step-by-step explanation:

8 0
3 years ago
A pilot flew a 400-mile flight in 2.5 hours flying into the wind . Flying the same rate and with the same wind speed, the return
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Answer:

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Step-by-step explanation:

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The speed can be defined as the ratio distance over time, but in this case the pilot is flying at the speed of the plane as well of speed of the wind. We can denote speed of plane as "s" and speed of the wind as "k"

Then the speed of the plane=(s-k) this is because it is moving in the opposite direction of the wind.

But From the question, the plane distance=400mile and the corresponding time =2.5 h

Then the speed of the plane=(s-k) =400mile/2.5

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By the time it return from trip, the speed the plane flew with is (s+k) because the wind is at the rear.

From the question, the plane distance=400mile and the corresponding time =2 h

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