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inysia [295]
3 years ago
14

(4 – 4 cosx)(4 +4 cosx) Simplify

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

Answer:

16sin^2(x)

Step-by-step explanation:

(a-b)(a+b)=a^2-b^2

(4-4cosx)(4+4cosx)

=4^2-(4cosx)^2

=16-16cos^2(x)

=16(1-cos^2(x))

=16sin^2(x)

natali 33 [55]3 years ago
3 0

Answer:

I don't quite know

Step-by-step explanation:

but thanks for asking

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aev [14]
This looks super duper hard wish I can solve it out
8 0
3 years ago
A teacher randomly chooses a two-person leadership team from a group of four qualified students. Three of the
Slav-nsk [51]

Answer:

what is P(A), the probability that the first student is a boy? 3/5


what is P(B), the probability that the second student is a girl? 3/4


what is P(A and B), the probability that the first student is a boy and the second student is a girl? 1/2


No, évents A and B are not independent events

Step-by-step explanation:

3 0
2 years ago
-x^(2)-12=-87<br><br> Please explain your answer, and how I make the x positive
spayn [35]
Solve for x over the real numbers:
-x^2 - 12 = -87
Add 12 to both sides:
-x^2 = -75
Multiply both sides by -1:
x^2 = 75
Take the square root of both sides:
Answer:  x = 5 sqrt(3) or x = -5 sqrt(3)  both Answers are correct
7 0
3 years ago
HELP ASAP
Liula [17]

Answer:

A = 1.5386

Step-by-step explanation:

Quarter circle area formula:

A = (πr²)/4

A= (π1.4²)/4

A = (3.14*1.96)/4

A = (6.1544)/4

A = 1.5386

7 0
2 years ago
Read 2 more answers
Find the x and y intercepts of this line:<br> -5x+4y=-18
vaieri [72.5K]

Answer:

Step-by-step explanation:

x- intercepts: ( 18/5,0)

y- intercepts: ( 0,-9/2)

3 0
3 years ago
Read 2 more answers
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