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weqwewe [10]
3 years ago
13

Which of the following are identities? Check all that apply.​

Mathematics
2 answers:
Hatshy [7]3 years ago
5 0

Answer:

b. cos²3x - sin²3x = cos6x

if its wrong sorry

hope this helps you☺️☺️

scoray [572]3 years ago
4 0

Answer:

B and D

Step-by-step explanation:

B.cos²3x-sin²3x=cos6x   ( as cos²a -sin² a = cos 2a)

D.(sinx+cosx)²=sin²x+cos²x+2sinxcosx=1+sin2x

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Joshua has a bag of marbles. In the bag are 5 white marbles, 3 blue marbles, and 7 green marbles. Peter randomly draws one marbl
Step2247 [10]

Answer:

1 / 5

Step-by-step explanation:

Given that:

Number of white marbles = 5

Number of blue marbles = 3

Number of green marbles = 7

Required is the approximate probability of drawing 2 green marbles, Note that drawing is done without replacement :

Probability = required outcome / Total possible outcomes

Total possible outcomes = sum of all marbles = (5 + 3 + 7) = 15 marbles

First draw:

P(Green) = 7 / 15

Second draw:

Required outcome = 7 - 1 = 6

Possible outcomes = 15 - 1 = 14

P(green) = 6 / 14

Probability of drawing out two green marbles :

(7/15 * 6/14) = 42 / 210 = 1 / 5

6 0
3 years ago
Louise begins factoring the polynomial, which has four terms.
ad-work [718]

Louise wants to factorize completely the given polynomial 4x^{3}+12x^{2}+5x+15

Grouping first, second terms together and third, fourth terms together

= 4x^{3}+12x^{2}+5x+15

Taking 4x^{2} common from first and second terms of the given expression and taking 5 common from the third and fourth terms.

==4x^{2}(x+3)+5(x+3)

Taking (x+3) common from the given expression,

==(4x^{2}+5)(x+3) is the completely factored form.

5 0
3 years ago
-5=×÷-10<br><img src="https://tex.z-dn.net/?f=%20-%205%20%3D%20%20%5Cfrac%7B%20%5Ctimes%20%20%7D%7B%20-%2010%7D%20" id="TexFormu
Genrish500 [490]

Answer:

50

Step-by-step explanation:

-5(-10) = x/-10 (-10)

50 = x

4 0
3 years ago
Can u give me the answer<br>​
Romashka-Z-Leto [24]

Answer:

rotation

Step-by-step explanation:

all are being roatated. They arent a reflection because the F is changed thus must be rotation.

6 0
3 years ago
The domain for f(x) and g(x) is the set of all real numbers. Let f(x) = 3x + 5 and g(x) = x2. Find g(x) − f(x).
kifflom [539]

Answer:

3x^2 + 8  

Step-by-step explanation:

Given functions,

f(x) = 3x + 8 ----(1)

g(x) = x^2 -----(2)

Since,

(fog)(x) =  f( g(x) )      ( Composition of functions )

=f(x^2)             ( From equation (2) )

=3x^2 + 8          ( From equation (1) )

Hence,

(fog)(x)=3x^2 + 8

Step-by-step explanation:

8 0
3 years ago
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