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3 years ago

Can someone please give me the answer

Mathematics

1 answer:

iren [92.7K]3 years ago

3 0

Answer:

The answer is Law of detahment!

Step-by-step explanation:

hope this helps!

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What is x??? Please explain.

kari74 [83]

Answer:

78°

Step-by-step explanation:

when two lines intersect it creates 4 seperate angles, here it gives us 78°, and we know that the angle across from it is the same, so they equal.

6 0

3 years ago

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Find the exact values of sin(u/2) cos(u/2) and tan(u/2) given sin u=24/25 and pie/2 < u < pie

vlada-n [284]

Recall the double/half angle formulas:

$\cos^2\dfrac x2=\dfrac{1+\cos x}2$

$\sin^2\dfrac x2=\dfrac{1-\cos x}2$

We're given $\sin u=\frac{24}{25}$ , and since $u$ is between π/2 and π, we expect $\cos u$ to be negative. So from the Pythagorean identity, we find

$\sin^2u+\cos^2u=1\implies\cos u=-\sqrt{1-\sin^2u}=-\dfrac7{25}$

Also, we know $\frac u2$ will fall between π/4 and π/2, so both $\sin\frac u2$ and $\cos\frac u2$ will be positive. Then we find

$\cos\dfrac u2=\sqrt{\dfrac{1+\cos u}2}=\dfrac35$

$\sin\dfrac u2=\sqrt{\dfrac{1-\cos u}2}=\dfrac45$

and it follows that

$\tan\dfrac u2=\dfrac{\sin\frac u2}{\cos\frac u2}=\dfrac43$

8 0

4 years ago

Look at this graph:

Troyanec [42]

Answer:

It look like .2/1( that's the slope btw)

Step-by-step explanation:

The reason I said that is because for the 0.2 it look like the like isn't on 4 but close to it which I would suggest that the slope is less than one.

6 0

3 years ago

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P(x)=ax-b p(1)=5 and p(2)=4 a+b=?<br><br>HELP ME PLEASE<br><br>

son4ous [18]

im not really sure about this since i think you can just stop at equation 1

8 0

3 years ago

Help on number nine please?

AURORKA [14]

im pretty sure true because they do not intersect and are not parallel :)

7 0

4 years ago