The height of a right cylinder is 3 times the radius of the base. The volume of the cylinder is 24π cubic units. What is the hei
2 answers:
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Answer:
<u>27</u> students are girls.
Step-by-step explanation:
Given:
There are 3/4 as many girls as there are boys.
In the fifth grade total there are 63 students.
Now, to find the number of students that are girls.
Let the number of students that are boys be
So, the number of students that are girls =
Total number of students = 63.
Now, to get the number of students that are girls we solve an equation:
Now, substituting the value of :
Therefore, 27 students are girls.
The subtraction of complex numbers is cos(π)+i sin(π).
Given [cos(3π/4+i sin(3π/4) and
=cos (π/2) +i sin(π/2)
We have to find the value of .
A complex number is a number that includes real number as well as a imaginary unit in which . It looks like a+ bi.
We have to first solve and then we will be able to find the difference.
[ cos (3π/4)+i sin (3π/4)]
[cos(π-π/4)+ i sin (π-π/4)]
= [-cos(π/4)+sin (π/4)]
=(-1/
+1/
)
=
=0
cos(π/2)+i sin (π/2)
=0+i*1
=1
Now putting the values of ,
=-1
=-1+i*0
=cos (π)+i sin(π)
Hence the value of difference between is cos(π)+i sin(π).
Learn more about complex numbers at brainly.com/question/10662770
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