3 years ago

If Sin x = -¼, where π < x < 3π∕2 , find the value of Cos 2x

1 answer:

5 0

Answer: 7/8

Cos2x has 3 formulas, Sinx is given in the question, we should use the formula with sinus. I guess that's the solution.

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No links pls just answer the question direct.

NeTakaya

Formula:

(3.14)r^2

Larger one:

(3.14)(3)^2

28.26 * 13

367.38 in^2

Smaller one:

(3.14)(3)^2

28.26 * 8

226.08 in^2

3 0

3 years ago

The length of one side of a square is 3n+2. The perimeter of the square is 4(3n+2). Which expression is equivalent to the perime

deff fn [24]

Answer:

4(3n + 2)

Step-by-step explanation:

as we know perimeter of a square is 4 x side

one side is 3n + 2

4 sides = 4(3n +2)

8 0

3 years ago

A fan is marked up 40% off the original lrice the original price was $20 whar is tge new price of the fan before sales tax

Neporo4naja [7]

10% of 20 is 2
2x4=8
20-8=12
The answer is $12

7 0

3 years ago

Blank - 5.27 = 2.99<br> literally forgot how decimals work

bulgar [2K]

Answer:

8.26

Step-by-step explanation:

you can solve this by putting x for blank

x-5.27=2.99

solve for x

x-5.27+5.27=2.99+5.27

x=8.26

3 0

2 years ago

Read 2 more answers

The following formula relates three quantities Force (F) mass (m) and acceleration (a).

Agata [3.3K]

a. F = ma

F/a = ma/a

m = F/a

b. F = ma

-30 = -6a

a = 5

c. F = ma

30 = 10a

a = 3

4 0

3 years ago