Mathematics College

if cos(x) = -1/4 and tan(x) < 0, what is sin(2x)​

Answers

Answer 1

Answer:

B is correct: (-sqrt15)/8

Step-by-step explanation:

Answer 2

The value of the x is 104.5° then the value of the sin 2x is -0.49. Then the correct option is B.

What is trigonometry?

Trigonometry deals with the relationship between the sides and angles of a right-angle triangle.

If cos(x) = -1/4 and tan(x) < 0

Then the value of the x will be

[tex]\begin{aligned} \cos x &= - \dfrac{1}{4}\\\\x &= \cos^{-1} \dfrac{-1}{4}\\\\x &= 104.5^o \end{aligned}[/tex]

Then the value of the sin 2x will be

[tex]\sin 2x = \sin 2*104.5^o\\\\\sin 2x = \sin 209^o\\\\\sin 2x = -0.4848 \approx 0.49[/tex]

More about the trigonometry link is given below.

https://brainly.com/question/22698523

Related Questions

Please help answer this ?!

Answers

Answer:

i think you have the right answer

Step-by-step explanation:

good job!

Answer:

A

Step-by-step explanation:

Unless the shape is dialatedthe side lengths remain constant because you are just moving its position ,

I REPEAT BRAINIEST ON THE LINE!!!!

Mikaela is competing in a race in which she both runs and rides a bicycle. She runs 4.5 kilometers in 0.5 hour and rides her bicycle 18.75 kilometers in 0.75 hour. If she runs for 1 hour and bikes for 1 hour at the same rates as she does in the race, how far will she travel?

Answers

Answer:

25.67 km

Step-by-step explanation:

4.5 + 0.75 + 18.75 - 0.5 - 2 hrs = 25.67km

Answer:

about 35 km

Step-by-step explanation:

4.5 km divided by 0.5hour/30minutes = 6 min, 40 sec per km

18.75 divided by 0.75hour/45 minutes = 2 min 24 sec per km

60 divided 6.40 = about 9

60 divided 2.24 = about 26

26+9=35

I hope thats correct lol

What equation results from completing the square and then factoring?
x2 + 2x = 9

Answers

Answer: (x+1)^2=10

Step-by-step explanation:

Find the value of x:

Answers

X equals 14 because D+ he is 14°
X = 14 use the graph



What was Bear B's average speed in
m/min? No units required for answer.

Answers

Given:

Graph of positions of Bear A and Bear B.

To find:

The average speed of Bear B in m/min.

Solution:

From the graph it is clear that initial point of graph of Bear B is (0,100) and the end point is (60,2800).

The average speed of Bear B is

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

[tex]m=\dfrac{2800-100}{60-0}[/tex]

[tex]m=\dfrac{2700}{60}[/tex]

[tex]m=45[/tex]

Therefore, the average speed of Bear B is 45 m/min.

Evaluate and reduce:
7
3
--
8
16
Enter the number that belongs in the
green box.
[?]
Enter

Answers

Answer:

Step-by-step explanation:

7/8 + 3/16

14/16 + 3/16

17/16

It will be nice if you give me brainliest.Good luck!

I will give you branilest!

Answers

Answer:

10/3

Step-by-step explanation:

I did quiz lol and I got it right

Sean took out a loan for $1000. He repays $50 twice per month on the
loan. The amount of money Sean owes , y, is a function of the number of
months since he took out the loan, x. Write an equation to model the
situation.

Answers


It would be 50x =1000 because x is the loan he took so you need to keep the x in check
The answer is: 50x=1000

explain how you found the value of the mean
​

Answers

Answer:

where is the equation......

Answer:

The mean is the average of the number. It is easy to calculate add up on the numbers, then divide by how many numbers there are.

1.2 divided by 0.3 asp asp

Answers

Answer:

4

Step-by-step explanation:

Answer: 4

Step-by-step explanation:

2.) The original price of Airpods is $160.00. They
are on sale for 15% off. What is the discount
Amount

Answers

Answer:

$136.00

Step-by-step explanation:

Change 15% to 0.15. Multiply 0.15 x 160. You get 24. Subtract 24 from the orginial price. 160-24=$136.000

Answer:$136

Step-by-step explanation:

A rectangle has an area of 3/2 square yards. If the width of the rectangle is 1/2 yard, which statement is true?

Answers

Answer:

i believe it is 1/2 yard

Step-by-step explanation:

Which of the following best represents an elevation of 0 feet? A. a mountain top B. a beach C. a sea trench

Answers

Answer:

the answer is b) The beach

Answer:

b

Step-by-step explanation:

it's obious

I know the answer but can someone explain how it's correct, it is D.

Answers

Answer:

1/3x9= 3

3+2=5

Step-by-step explanation:

Substituting 9 for x

Subtract 2 from 2 and 5 to get 1/3x= 3 then you have to multiply 1/3 times 3 and 3 times 3 to get x=9

Solve: 2/3x-7=17 please help

Answers

Answer:

x=36

Step-by-step explanation:

2/3x-7=17

2/3x-7+7=17+7

2/3x=24

2/3x(3)=24(3)

2x=72

2x/2=72/2

x=36

14÷5983 step by step​

Answers

0.23% or 0.00233996

14/5983 calculate the approximate value and get 0.00233996

PLEASE help
PLEASE ​

Answers

Answer:

7) $57.2 (Multiply 65 by 0.12. You get $7.8. Finally, subtract 7.8 from 65.)

8) $20 (Multiply 29.99 by 0.3333. Subtract 9.99 from 29)

9) $35.7 (Do the same steps as above)

10) $276.675 (Do the same steps as above)

11) The decimal form of 57% is 0.57

12) cost= c×0.57

13) $70.65

14) $25.65 was added

What is the answer? Please

Answers

Answer:

56

Step-by-step explanation:

P=2(l+w)=2·(16+12)=56

Answer:

Area of the total garden is: given by: 4 x^2 +56 x + 192

Step-by-step explanation:

Complete the product

(2x + 16)* (2x + 12) = 4x^2 +24 x +32 x + 192 =

= 4 x^2 +56 x + 192

how many quarts are there in 20 quarts?​

Answers

20
It says 20 in frount of quart

Answer:

20 lol??

Step-by-step explanation:

A cellphone costs 120 dollars. The price is reduced 30 percent for a sale. How much is the saving

Answers

36 maybe

120•0.3
because 30% is 0.3

Who is the better rapper Drake or Kendrick

Answers

Answer:

Drake

Step-by-step explanation:

Answer:

Drake

Step-by-step explanation:

-2/7 x 3/7 as fraction

Answers

Answer:

-6/49

Step-by-step explanation:

this is the answer it is very easy

Jack owes a total of $24.00 to 6 different friends. If Jack owes each friend an equal amount, which answer choice represents the change in Jack's money when he pays one friend?

Answers

Answer:

5555555555555555555225313

Step-by-step explanation:

3

6

554

Answer:

$20.00

Step-by-step explanation:

24.00/6=4 so 24-4=20.00

Which of the following functions is depicted?

Answers

Answer:

D

Step-by-step explanation:

?
After not studying hard enough and losing his academic scholarship, Mark needs to borrow money from 2 different banks to pay
his tuition. Bank Seven charges 12% simple interest, while First Collegiate Bank charges 10%. Mark had to borrow twice as
much from Bank Seven as he did from First Collegiate Bank. After one year, the combined interest he owed was $816. How
much did Mark borrow in total?

Answers

9514 1404 393

Answer:

  $7200

Step-by-step explanation:

If x is the total amount borrowed, then 2/3x was borrowed from Bank Seven, and 1/3x was borrowed from First Collegiate Bank. The total interest owed was ...

  (2/3x)(0.12) +(1/3x)(0.10) = $816

  x(2/25 +1/30) = $816

  (17/150)x = $816

  x = $816(150/17) = $7200

Mark borrowed a total of $7200.

Probability is a measure of how likely an event is to occur. Match one of the probabilities that follow with each statement of likelihood given. (The probability is usually a more exact measure of likelihood than is the verbal statement.)0 0.01 0.45 0.50 0.55 0.99 11. This event is impossible. It can never occur.A. 0B. 0.01C. 0.3D. 0.6E. 0.99F. 12. This event is certain. It will occur on every trial.A. 0B. 0.01C. 0.3D. 0.6E. 0.99F. 13. This event is very likely, but it will occur once in a while in a long sequence of trials.A. 0B. 0.01C. 0.3D. 0.6E. 0.99F. 14. This event will occur slightly less often than not.A. 0B. 0.1C. 0.3D. 0.45E. 1

Answers

Answer:

Kindly check explanation

Step-by-step explanation:

Verbal statement and associated probability:

P = 0 ; This event is Impossible event, it will never occur. It is the least value of probability an event can take.

P = 1 ; This event is certain, it will occur on every trial. It is the highest value of probability an event can have.

P = 0.6 ; very likely event, but will occur once in a while in a long sequence of trials ; very likely signifies a probability above average (0.5) though will not always occur.

P = 0.45 ; This event will occur slightly less often than not; as the probability value slightly falls below the average standardized probability value (0.5)

Please help. Will mark brainleist

Answers

Área= Lw (length * width)
Perimeter= 2l + 2w

Área- 5(8x +3)
Simplify- 40x +15

Perimeter- 2(8x+3) + 2(5)
Simplify- 16x+6+10
Simplify more- 16x +16

What is the value of the expression below? (9 divided by 3) + 4 (6 minus 7) –7 –1 7 20


PLEASE ANSWER QUiCK I’m on timer

Answers

Answer:

The answer is -1.

Step-by-step explanation:

Answer:

-1 is the answer saw it on clculator

Jackson can lay 6000ft of tile in 3 hours.
What is Jackson's rate?
A.200ft/h
B.1500ft/h
C.2000
D.18000f/h

Answers

Answer:

It's 2000ft/h

Step-by-step explanation:

6000/3 = 1 hour rate

2000 ft/hr

6000/3 is 2000

idk how to do this..............

Answers

ABE : Right Triangle
BEC : Equilateral Triangle
DEF : Equilateral Triangle
CDF : Acute Triangle

Hopefully this help! sorry if i’m incorrect :)
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