132 books are printed in 2 hours, 264 books are printed in 4 hours, and 528 books in 8 hours, how many books are printed in 3 ho
1 answer:
You might be interested in
Hi there!
8 would be the nearest ten of 7.995..
<em><u>1.Multiply 82 with 0.01:</u></em>
<em><u /></em><em><u>·</u></em>
<em><u /></em>
<em><u>2.Multiply the terms:</u></em>
<em><u /></em><em><u>·</u></em>
<em><u /></em>
<em><u>3.Round the term:</u></em>
<em><u /></em><em><u /></em>
Therefore, 82% of 9.75 in nearest tenth is 8.
Answer:
tan(2x)=-24/7
Step-by-step explanation:
Since tan(x)=sin(x)/cos(x)
We are going to need sin(x) any time, so lets find it right away.
To do this, remember that. sin(x)^2 + cos(x)^2=1
so.
This leads to.
We have obtained two solutions, -3/5 and 3/5.
We need to pick one, since not all of them are correct for our scenario, in this case, we've been told that x belongs to the range [180, 270], in this range, sin(x)<0.
So in our previous solution, we have that sin(x)= -3/5
Now, to find tang(2x), we need to apply the definition
Tang(2x)=sin(2x)/cos(2x).
Lets remember that
sin(2x)=2*sin(x)*cos(x)
cos(2x)=cos(x)^2 - sin(x)^2.
Lets evaluate our given result.
sin(2x)=2*(-3/5)*(4/5)=-24/25
cos(2x)=(-4/5)^2 - (3/5)^2=7/25
Hence
tan(2x)= -(24/25) / (7/25)=-24/7