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4 years ago

I give up i might have to pull an allnighter

Mathematics

2 answers:

eimsori [14]4 years ago

8 0

Answer:

Yes

Step-by-step explanation:

netineya [11]4 years ago

6 0

Answer:

Yes, they are congruent

Step-by-step explanation:

Yes, they are congruent because all the side and angle lengths are congruent.

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Use the unit circle to evaluate these expressions:

sergeinik [125]

Answer:

a) We can remove the complete rotations around the unitary circle like this, because we know that one complete revolution is equivalent to $2\pi$ :

$17 \pi/4 - 2\pi = \frac{9\pi}{4} -2\pi = \pi/4$

For this case we know that $sin (\pi/4) = \frac{\sqrt{2}}{2}$

So then $sin(\frac{17 \pi}{4}) = \frac{\sqrt{2}}{2}$

b) We can remove the complete rotations around the unitary circle like this, because we know that one complete revolution is equivalent to $2\pi$ :

$19 \pi/6 - 2\pi = \frac{7\pi}{6}$

For this case we know that $cos (\pi/6) = \frac{\sqrt{3}}{2}$

And we know that $\frac{7\pi}{6}$ is on the III quadrant since is equivalent to 210 degrees. And on the III quadrant the cosine is negative. So then $cos(\frac{19 \pi}{6}) = -\frac{\sqrt{3}}{2}$

c) For this case that any factor of $\pi$ the sin function is equal to 0.

So from definition of tan we have this:

$tan (450\pi) = \frac{sin(450 \pi)}{cos(450 \pi)}= \frac{0}{cos(450\pi)}= 0$

Step-by-step explanation:

a. sin (17pi / 4 )

We can remove the complete rotations around the unitary circle like this, because we know that one complete revolution is equivalent to $2\pi$ :

$17 \pi/4 - 2\pi = \frac{9\pi}{4} -2\pi = \pi/4$

For this case we know that $sin (\pi/4) = \frac{\sqrt{2}}{2}$

So then $sin(\frac{17 \pi}{4}) = \frac{\sqrt{2}}{2}$

b. cos (19pi / 6 )

We can remove the complete rotations around the unitary circle like this, because we know that one complete revolution is equivalent to $2\pi$ :

$19 \pi/6 - 2\pi = \frac{7\pi}{6}$

For this case we know that $cos (\pi/6) = \frac{\sqrt{3}}{2}$

And we know that $\frac{7\pi}{6}$ is on the III quadrant since is equivalent to 210 degrees. And on the III quadrant the cosine is negative. So then $cos(\frac{19 \pi}{6}) = -\frac{\sqrt{3}}{2}$

c. tan(450pi)

For this case that any factor of $\pi$ the sin function is equal to 0.

So from definition of tan we have this:

$tan (450\pi) = \frac{sin(450 \pi)}{cos(450 \pi)}= \frac{0}{cos(450\pi)}= 0$

4 0

3 years ago

Please answer with equations will give 25 points and mark brainliest.

Dimas [21]

Answer:

1/2 of 6/7 is greater than 2/3 of 3/7

Step-by-step explanation:

6/7 x 1/2 = 6/14 = 3/7

3/7 x 2/3 = 6/21 = 2/7

2/7 < 3/7

1/2 of 6/7 is greater than 2/3 of 3/7

6 0

3 years ago

Read 2 more answers

4(x+1.5)=38 solve for x

Kitty [74]

Answer:

x = 8

Step-by-step explanation:

4(x+1.5)=38

Distribute the 4

4x +6 = 38

Subtract 6 from each side

4x+6-6 = 38-6

4x = 32

Divide each side by 4

4x/4 = 32/4

x = 8

3 0

4 years ago

What is the slope of the line that passes through the points (8, -6) and (-4,-6)? Write your answer in simplest form.

Arlecino [84]

Answer:

Step-by-step explanation:

→ Find the change in y coordinates

-6 --6 = 0

→ As the change in y is 0, the gradient is 0

6 0

2 years ago

Read 2 more answers

Mr. Wright bought a 3 pound of cat food and a 5 pound of dog food.There are 16 ounces in each pound.How many ounces of pet food

qwelly [4]

Answer:128

Step-by-step explanation:

Since he bought 3 pounds of cat food and 5 pounds of dog food, he bought 8 pounds of food in total. Since their are 16 oz in each pound, there are 8*16=128 ounces of pet food!

7 0

3 years ago

Read 2 more answers