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3 years ago

Evaluate c-2c−2c, minus, 2 when c=7c=7c, equals, 7.

Mathematics

1 answer:

____ [38]3 years ago

3 0

Answer:

the correct answer would be 5

Step-by-step explanation:

when c=7, then we put that value in for c in the equation c-2

c-2

(7)-2

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Solve for sin3theta

aniked [119]

Answer:

sin 3 θ = 3 sin θ - 4 sin³θ

Step-by-step explanation:

Step(i):-

Given sin 3 θ

= sin ( 2θ + θ )

apply trigonometric formula

sin ( A + B) = sin A cos B + cos A sin B

sin 2 A = 2 sin A cos B

Cos 2 A = 1 - 2 sin² A

cos ² A - sin ² A = 1

Step(ii):-

sin 3 θ = sin ( 2θ + θ )

= sin 2θ cosθ + cos2θ sin θ

= 2 sin θ cos θ cos θ +( 1 - 2 sin² θ )sin θ

= 2 sin θ (cos² θ ) + sin θ- 2 sin³ θ

= 2 sin θ ( 1- sin²θ) + sin θ- 2 sin³ θ

= 2 sin θ - 2sin³θ + sin θ- 2 sin³ θ

= 3 sin θ - 4 sin³θ

Final answer :-

sin 3 θ = 3 sin θ - 4 sin³θ

6 0

3 years ago

What process is the method by which a neutral object obtains an electrical charge

Vedmedyk [2.9K]

Answer: induction

Step-by-step explanation:

7 0

3 years ago

Can Someone please help me out with numbers 49, and 50

seraphim [82]

49

Unfortunately I couldn’t find number 50 but I did find number 49 just replace the x with the current variable you have

6 0

3 years ago

which of the following sets of ordered pairs does not satisfy a linear function? a. (2,5), 4,9), (6,13), (7,15), (9,17) b. (2,5)

Nookie1986 [14]

Answer:

a. (2,5), (4,9), (6,13), (7,15), (9,17)

Step-by-step explanation:

slope = (y2-y1)/(x2-x1)

a. (2,5), (4,9), (6,13), (7,15), (9,17)

m = (9-5)/(4-2) = 4/2 =2 an increase in 2 y for every 1 x

from 7 to 9 is an increase of 2 in the x direction so we should increase 4 in the y direction (15 to 17 is an increase of only 2)

This is not a linear function

b. (2,5), (3,7), (4,9), (5,11), (6,13)

c. (2,6), (4,8), (6,10), (8,12), (10,14)

d. (2,6), (3,9), (4,12), (5,15), (6,18)

8 0

3 years ago

HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!

enyata [817]

Answer:

Step-by-step explanation:

$-2\frac{1}{4}=\frac{-9}{4}\\\\-1\frac{1}{2}=\frac{-3}{2}\\\\$

-2 1/4 ÷ -1 1/2 =

$\frac{-9}{4}*\frac{-2}{3}=\frac{3}{2}*\frac{1}{1}\\\\=\frac{3}{2}\\\\=1\frac{1}{2}$

7 0

3 years ago