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Svetach [21]
4 years ago
7

Find sin 60° a=1/2 b=root2 / 2 c= root 3/2 d= 2 root 3 / 3

Mathematics
2 answers:
Sholpan [36]3 years ago
8 0
C= root 3/2
Explanation:
nikitadnepr [17]4 years ago
4 0

Answer:

C= \frac{\sqrt{3} }{2}

This is because it is a right triangle defined by its angles. It is a right triangle due to its 90° angle, and the other two angles must be 30° and 60°.

And by the definition of sine: sin of an angle = (opposite leg) / hypotenuse

Opposite leg is x\sqrt{3} and hypotenuse is 2x.

x\sqrt{3} /2x

Cancel x

Then:

sin 60 ° = \frac{\sqrt{3} }{2}

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Find the length of x and y
erastova [34]

Answer:

x = 10.296

y = 5.831

Step-by-step explanation:

You can use the Pythagorean theorem to solve the triangles shown in various ways.

9²+5²=x²

x = 10.296

5²+3²=y²

y = 5.831

5 0
3 years ago
2W+3=78. (What does 'W' equal?)
zhenek [66]
Subtract 3 from 28 to get 75. Then since 2w symbolizes multiplication you do the opposite, you divide 75 by 2 to get 37.5. So w=37.5
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3 years ago
The quadrilaterals JKLM and PQRS are similar.
Sveta_85 [38]

Answer:

x = 2.8

Step-by-step explanation:

If the quadrilaterals are similar, then the ratios of corresponding sides will be equal:

KL : QR = 4 : 5.6 = 4 / 5.6 = 5/7

JM : PS = 7 : 9.8 = 7 / 9.8 = 5/7

LM : RS = 3 : 4.2 = 3 / 4.2 = 5/7

This shows that the ratio of KJ : QP = 5/7

KJ : QP = 2 : x = 2 / x

Therefore, \frac{2}{x}=\frac{5}{7}

cross multiply:  14 = 5x

Divide both sides by 5:  x = 2.8

8 0
2 years ago
Lynn has one red, one blue, and one yellow shirt to choose from. She also has one blue and one yellow necklace to choose from. L
Lelechka [254]
You would multiply one third by one half
6 0
3 years ago
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A new car has a sticker price of $22,150, while the invoice price paid on it was $18,780. what is the percent amount of markup?
Dmitrij [34]

The formula to find markup amount

\frac{Change in price }{original price}

A new car has a sticker price of $22,150, while the invoice price paid on it was $18,780.

Original price of new car = $18,780

Sticker price of new car = 22,150

Change in price = 22,150 - 18,780 = 3370

Markup = \frac{Change in price }{original price}

= \frac{3370 }{18780}

= 0.179446

Markup percentage = 0.179446 * 100 = 17.94%

5 0
3 years ago
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