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sweet [91]
3 years ago
14

If cos x=1/2 and 90°

Mathematics
1 answer:
Talja [164]3 years ago
5 0

When I factor[ 2cos (square) - 5cos -3], I get (2cos + 1)(cos - 3). 2cos + 1 = 0, 2cos = -1, cos = -0.5,. Using inv cos on calculator, I get 120 degree related angle.

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Please help me on thiss
Hitman42 [59]

Answer:

-1.2

Step-by-step explanation:

3n + 5 = 1/2(11n + 16)

3n + 5 = 5.5n + 8

5 = 2.5n + 8

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-3/2.5 = n

-1.2 = n

Hope this helps!

6 0
3 years ago
Read 2 more answers
If a spring stretches 6 meters when a 7-kilogram weight is attached to it, how much will it stretch when a 42-kilogram weight is
Zinaida [17]

Answer:

Step-by-step explanation:

 This is a simple proportion problems.

7 kilogram weight attache to a spring stretches  = 6 meters

 1 kilogram would stretch                                       =  6/7 m

Therefore 42 kilograms would  stretch                  = (6/7 x 42)meters

                                                                                 =  36 meters.

                                                                         

 

8 0
3 years ago
Help please Algebra 1 <br> Simplify 4y-6yx+y
astraxan [27]
I hope you will like my answer

5 0
3 years ago
A lawn sprinkler spins in a circle. The sprinkler covers a radius of 12 feet. Which choice is the closest to the area of lawn th
Veronika [31]

You would do pi x r squared. r=12, and 12 squared is 144. pi (3.14) times 144 equals 452.16!

3 0
3 years ago
How would I solve and answer these two questions? I'm having a hard time understanding them.
postnew [5]

Answer:

The first one is either 88 feet or 90 feet

Step-by-step explanation:

8 0
3 years ago
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