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3 years ago

Which numbers are perfect squares

Mathematics

1 answer:

dimaraw [331]3 years ago

4 0

4,9,16,25,36,49,64,81,100,

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Simplify the expression cos x cot x+ sin x please select the best answer from the choices provided a.0, b.csc x, c. Tan x, d sec

expeople1 [14]

Answer:

$cot x = \frac{cos x}{sin x}$

$cos x \frac{cos x}{sin x} + sin x$

$\frac{cos^2 x}{sin x} +sin x$

$sin^2 x + cos^2 x =1$

Solving for $cos^2 x$ we got $cos^2 x =1 -sin^2 x$ and replacing this we got:

$\frac{1-sin^2 x}{sin x} +sin x$

$\frac{1}{sin x} -\frac{sin^2 x}{sin x} +sin x$

$csc x -sin x + sin x = csc x$

And then the best option for this case would be:

b.csc x

Step-by-step explanation:

For this case we have the following expression given:

$cos x cot x + sin x$

We know from math properties that the definition for cot is $cot x = \frac{cos x}{sin x}$

If we use this definition we got:

$cos x \frac{cos x}{sin x} + sin x$

$\frac{cos^2 x}{sin x} +sin x$

Now we can use the following identity:

$sin^2 x + cos^2 x =1$

Solving for $cos^2 x$ we got $cos^2 x =1 -sin^2 x$ and replacing this we got:

$\frac{1-sin^2 x}{sin x} +sin x$

$\frac{1}{sin x} -\frac{sin^2 x}{sin x} +sin x$

$csc x -sin x + sin x = csc x$

And then the best option for this case would be:

b.csc x

4 0

3 years ago

Find the volume of the prism.

Alex_Xolod [135]

Answer:

c. 120 units^3

Step-by-step explanation:

L x W x H = <em>V</em>

3 x 4 / 2 = 6

6 x 20 = 120

6 0

3 years ago

why do whole numbers raised to an exponet get greater while fractions raised to an exponet get smaller

hoa [83]

Fractions are basically divisions.
Ex. 2/4 = 1/2

And whole numbers like 10, get greater when raised to an exponent.
Ex. 10^2 = 100

8 0

3 years ago

Help me, please<br> im serious tho

murzikaleks [220]

Answer:

2/6 or 1/3 so color 2 out of the six squares

Step-by-step explanation:

1/2 - 1/6 is equal to 3/6 - 1/6 so 2/6

7 0

3 years ago

HELP ASAP I NEED THIS TODAY ONLY I WILL MARK BRAINLIEST

Serjik [45]

Answer:

Step-by-step explanation:

1a. 14

1b. it's positive

2. If we were to just go with an estimation, i would say anywhere between 50-60, but I'm going with 50

4 0

3 years ago