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2 years ago

True or false:

Mathematics

2 answers:

lesya692 [45]2 years ago

8 0

Answer:

true

Step-by-step explanation:

vlabodo [156]2 years ago

3 0

Answer:

true

Step-by-step explanation:

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What is 43 centimeters equal to

aleksley [76]

86 or 129. how to figure that out: do 43 times 2 and you get 86 :) 43 times 3 is 129. hope this helps :)

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2 years ago

Read 2 more answers

Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal plac

Fed [463]

Answer:

$\theta=k\pi, \hspace{3}k\in Z\\\\ or\\\theta =2\pi k \pm arccos(\frac{1 }{8} ), \hspace{3}k\in Z\\$

Step-by-step explanation:

Factor constant terms:

$-2(-4sin(2\theta)+sin(\theta))=0$

Divide both sides by -2:

$sin(\theta)-4sin(2 \theta)=0$

Expand trigonometric functions using the fact:

$sin(2 \theta) =2 sin(\theta) cos(\theta)$

So:

$sin(\theta) -8sin(\theta)cos(\theta)=0$

Factor sin(x) and constant terms and multiply both sides by -1:

$sin(\theta) (8cos(\theta)-1)=0$

Split into two equations:

$(1)=8cos(\theta)-1=0\\\\(2)=sin(\theta)=0$

For (1)

Add 1 to both sides and divide both sides by 8:

$cos(\theta)=\frac{1}{8}$

Take the inverse cosine of both sides:

$\theta =2\pi k \pm arccos(\frac{1 }{8} ), \hspace{3}k\in Z$

For (2)

Simply take the inverse sine of both sides

$\theta = k \pi, \hspace{3}k\in Z$

Therefore, the solutions are given by:

$\theta=k\pi, \hspace{3}k\in Z\\\\ or\\ \theta =2\pi k \pm arccos(\frac{1 }{8} ), \hspace{3}k\in Z\\$

8 0

2 years ago

If f(x)=x-2, which of the following is the inverse of F(x)

sergiy2304 [10]

The answer would be 2. This is because inverse means opposite, and since f(x)=-2, then that means the inverse would be 2.

5 0

2 years ago

Read 2 more answers

A cylinder with a diameter of 10 inches (in.) and a cube are shown.

Scorpion4ik [409]

Answer:

Step-by-step explanation:

the volume of the cylinder is 3769.91

the volume of the cube is 1000

so the cylinder's volume is clearly larger than the cube's volume.

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2 years ago

Choose the sets to which this number belongs: 1/3 (can be more than one answer)

Lostsunrise [7]

1/3 is a rational number

7 0

1 year ago