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den301095 [7]
3 years ago
12

The two different teaching methods ??

Mathematics
1 answer:
uysha [10]3 years ago
4 0
Two different teaching methods would be visual learning and written learning
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In △ABC, m∠A=39°, a=11, and b=13. Find c to the nearest tenth.
Talja [164]

For this problem, we are going to use the <em>law of sines</em>, which states:

\dfrac{\sin{A}}{a} = \dfrac{\sin{B}}{b} = \dfrac{\sin{C}}{c}


In this case, we have an angle and two sides, and we are trying to look for the third side. First, we have to find the angle which corresponds with the second side, B. Then, we can find the third side. Using the law of sines, we can find:

\dfrac{\sin{39^{\circ}}}{11} = \dfrac{\sin{B}}{13}


We can use this to solve for B:

13 \cdot \dfrac{\sin{39^{\circ}}}{11} = \sin{B}

B = \sin^{-1}{\Big(13 \cdot \dfrac{\sin{39^{\circ}}}{11}\Big)} \approx 48.1


Now, we can find C:

C = 180^{\circ} - 48.1^{\circ} - 39^{\circ} = 92.9^{\circ}


Using this, we can find c:

\dfrac{\sin{39^{\circ}}}{11} = \dfrac{\sin{92.9^{\circ}}}{c}

c = \dfrac{11\sin{92.9^{\circ}}}{\sin{39^{\circ}}} \approx \boxed{17.5}


c is approximately 17.5.

8 0
3 years ago
Another real estate agent sold a house for $315,000 last week. If her commission is 1.25% of the selling price of the home, find
Rus_ich [418]

Answer:

$3937.50

Step-by-step explanation:

315,000 * 1.25% = 315,000 * 1.25/100 = 3,150*1.25 = 3937.5

7 0
3 years ago
6. The 2014 winner of the Boston Marathon runs as many as 120 miles per week. During the last few weeks of his
Nadusha1986 [10]

Answer:

Step-by-step explanation:

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3 years ago
The angles of a quadrilateral measure 80, 100, 100, 80 in this order what kind of quadrilateral has this shape what attributes h
Harrizon [31]

Answer:

Isosceles trapezoid

Step-by-step explanation:

-An isosceles trapezoid is also sometimes called a convex quadrilateral.

-It properties include:

  • A line of symmetry can often bisects a pair of opposite sides.
  • It has to obtuse alternating with each other after which a pair of acute angles alternate with each other i.e 80°, 80°,100°,100°
  • It has a trapezoidal shape which by definition has a two pair of parallel sides.
  • The angles on it's base or ceiling are equal hence the name Isosceles Trapezoid.

8 0
3 years ago
Sean is trying to save $192 to buy a new bike. He currently has $62 in the bank.
tatuchka [14]

Answer:

The answer is D

Step-by-step explanation:

7 0
3 years ago
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