1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
FrozenT [24]
3 years ago
6

WILL MARK BRAINLIEST ASAP!

Mathematics
1 answer:
musickatia [10]3 years ago
4 0

Answer:

D -24/25

Step-by-step explanation:

sin(2x) = 2sin(x)cos(x)

cos(x) = ⅘

sin²(x) = 1 - cos²(x) = 1 - (⅘)²

sin²(x) = 9/25

sin(x) = -⅗

(Because 4th quadrant)

sin(2x) = 2(-⅗)(⅘)

= -24/25

You might be interested in
The diameter of a circle is 16 centimeters. How would you calculate the area?
Y_Kistochka [10]

Answer: 201.06

Step-by-step explanation:

To find the area of a circle with the radius, square the radius, or multiply it by itself. Then, multiply the squared radius by pi, or 3.14, to get the area. To find the area with the diameter, simply divide the diameter by 2, plug it into the radius formula, and solve as before.

Hope this helps!

6 0
3 years ago
How to find area? will give..
ch4aika [34]

Answer:

Step-by-step explanation:

A=πr2

Circumference = 2πr

20π = 2πr

r=10

π=3.14

A=3.14 * 10^2

=314 cm^2

3 0
3 years ago
The sum of the angle measures of a polygon with n sides is 1260. find n.
Murrr4er [49]
Knowing the interior angle sum formula is; 

180x(n-2)

180x(n-2)=1260 (solve for n here) 
180n-360=1260 
180n=1260+360
180n=1620 
n=1620/180 
n=9

Therefore, this polygon has 9 sides.

Hope I helped :) 
4 0
3 years ago
3-18 even problems algebra 1 math
Tresset [83]

The answers for problems 13-18 are -9, 8, -2, 5, -2, and 15 after equating the same functions.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

It is given that:

From problems 13 - 18, some functions are shown,

13) h(x) = -7x, h(x) = 63

Equate both the function:

-7x = 63

x = -9

14) t(x) = 3x, t(x) = 24

Equate both the function:

3x = 24

x = 8

15) m(x) = 4x + 15, m(x) = 7

4x + 15 = 7

4x = -8

x = -2

16) 6x - 12 = 18

x = 5

17) 1/2 x - 3 = -4

1/2 x = -1

x = -2

18) j(x) = -4/5 x + 7, j(x) = -5

-4/5 x + 7 = -5

-4/5 x = -12

x = 15

Thus, the answers for problems 13-18 are -9, 8, -2, 5, -2, and 15 after equating the same functions.

Learn more about the function here:

brainly.com/question/5245372

#SPJ1

7 0
1 year ago
There is a bag filled with 3 blue, 4 red and 5 green marbles. A marble is taken at random from the bag, the colour is noted and
aliina [53]

Answer:

i think the answer is 9.

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • How to use unit circle to evaluate the six trig functions of theta
    13·1 answer
  • A matchbox is 5cm by 8cm by 2cm. A carton is 20 cm by 40 cm by 20 cm
    10·1 answer
  • (A)<br> simplify 3x^-2<br> (B)<br> simplify 5x^2y(2x^4y^-3)
    14·2 answers
  • Bao measured all of her pencils. The length of each pencil in centimeters was: 15, 11, 8, 13, and 15.
    6·1 answer
  • Please help with my straight lines!!
    15·1 answer
  • An artist makes a scale drawing of a building he likes. The building is 90 feet tall and 45 feet wide.If this picture is 3 feet
    13·2 answers
  • *GEOMETRY*
    13·1 answer
  • For which sample size (n) and sample proportion (p) can a normal curve be
    13·1 answer
  • Hi, this isn't a math question or anything. But I have a question about high schools. So I have all A's for my first marking per
    12·1 answer
  • Which explicit formula describes the sequence<br><br>use the picture for the full question​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!