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White raven [17]
3 years ago
7

I need to find length of MK​

Mathematics
1 answer:
Norma-Jean [14]3 years ago
7 0

Answer:

Use the cosine rule

Step-by-step explanation:

1. Apply formula of c^2 = a^2 + b^2 - 2abcosC

2. Substitute known values in: c^2 = 36 + 4900 - 840cos120

3. Apply algebra and use the calculator

4. Final answer is 73.18 (2 decimal places)

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What is the area of this parallelogram? 10.35 cm² 12.5 cm² 20.25 cm² 30.6 cm² Parallelogram A B C D is composed of a square and
Taya2010 [7]

Answer:

30.6 cm²

Step-by-step explanation:

The area of the parallelogram is simply the sum of the areas of the component three shapes - the square and the two triangles.

Area of square = 4.5 cm × 4.5 cm = 20.25 cm²

Area of two triangles = 2 ×(1/2) × 2.3 cm × 4.5 cm = 10.35 cm²

Area of parallelogram =  20.25 cm² + 10.35 cm² = 30.6 cm²

5 0
4 years ago
Read 2 more answers
A local gym has 2 types of cardio machines, treadmills and elliptical machines. There are 38 cardio machines in all. There are 1
Brilliant_brown [7]

Answer:

14 elliptical machines

Step-by-step explanation:

t = # of treadmills

e = # of elliptical machines

t + e = 38

t = e + 10

Substitute:

e + 10 + e = 38

2e = 28

e = 14

6 0
3 years ago
Help PLEASESSS due in 20
kicyunya [14]
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  2. 4 ÷ 4 + 4 ÷ 4
  3. (4 + 4 + 4) ÷ 4
  4. √4 + √4 + 4 - 4
  5. √4 + 4 + 4 ÷ 4
  6. √4 + 4 + 4 - 4
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  10. √4 + √4 + √4 + 4
  11. 44/(√4 + √4)
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  15. 44/4 + 4
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  17. 4 * 4 + 4 ÷ 4
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  19. 4! - 4 - 4 ÷ 4
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  22. 4 * 4 + 4 + √4
  23. 4! - √4 + 4/4
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  28. 4! + 4 + 4 - 4
  29. 4! + 4 + 4 ÷ 4
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Lol, that took a while, hope it helps!

7 0
3 years ago
Simplify square root of (1-cos)(1+cos)/cos^2
Pavel [41]
I hope this helps you



(1-cosx)(1+cosx)=1+cosx-cosx-cos²x=1-cos²x=sin²x


sin²x
____
cos²x


tg²x
3 0
3 years ago
Which pairs of angles in the figure below are vertical angles?
andre [41]

Answer:

C & D because vertical angles have the same measures and thoses angles intersects each other

Step-by-step explanation:

5 0
2 years ago
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