2 years ago

Which of the following are solutions to the equation cos^2 2x-1/4=0? Check all that apply.

Mathematics

1 answer:

Nata [24]2 years ago

6 0

Answer:

Step-by-step explanation:

Cos^2 2x=1/4

Cos 2x =+-1/2

2x=z

Cos z=+-1/2

z1=pi/3

z2=11pi/3

z1 and z2 are possible.

x1=pi/6

x2=11pi/6

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Find the area of the shape

Oliga [24]

Answer:

27 pi

Step-by-step explanation:

First find the area of a circle

A = pi r^2

A = pi ^^2

36 pi

We know this is 3/4 of a circle so multiply the area by 3/4

3/4 * 36 pi

27 pi

6 0

3 years ago

How do I find the answer?

11Alexandr11 [23.1K]

First simplify the number part, 14/2 = 7/1
then the x part, $\frac{x}{x^ \frac{3}{4} } = x^ \frac{1}{4} 
$
y doesn't need to be simplified
then simplify the z part, z^-6 = z^6

put it all together...
$7x^ \frac{1}{4}y^ \frac{1}{3} z^6$

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3 years ago

Find the volume of the cylinder.<br> Either enter an exact answer in terms of π or use 3.14

Grace [21]

Correcto 32 8 x 2 x 2=32

7 0

3 years ago

Read 2 more answers

What is the value of the expression k – 14 when k = –17?

Vedmedyk [2.9K]

I hope this helps you

-14+?= -17

?= -17+14

?= -3

6 0

4 years ago

john is 15 years old. john's mom takes him and his younger soster to a football game. tickets are $22 for adults and $16 for chi

Maksim231197 [3]

Answer:

$38

Step-by-step explanation:

cost of ticket for adult = $22

cost of ticket for youngster = $16

______________________________

cost of ticket for John's mom = $22 as she is adult

cost of ticket for john = $16 as he is young , his age is less than 18 years

Total cost of ticket for John and his mother = $22 + $16 = $38

5 0

3 years ago