Answer:
sin (55) = DE / AD
AD = DE / sin (55)
AD = 8 / sin (55)
And
tan (55) = DC / AD
tan (55) = DC / [8 / sin (55) ]
DC = 8 tan (55) / sin (55)
AD * DC =
[8 /sin (55) ] [ 8 tan (55) / sin (55) ] = 136 units^2
Step-by-step explanation:
f
Answer:
x=-20
Step-by-step explanation:
3x-11=4x+9
3x=4x+20
x+20=0
x=-20
75% of n is 375.
Step-by-step explanation:
Given,
45% of a number n = 225
We will find n first.
![\frac{45}{100}n=225\\0.45n=225](https://tex.z-dn.net/?f=%5Cfrac%7B45%7D%7B100%7Dn%3D225%5C%5C0.45n%3D225)
Dividing both sides by 0.45
![\frac{0.45n}{0.45}=\frac{225}{0.45}\\n=500](https://tex.z-dn.net/?f=%5Cfrac%7B0.45n%7D%7B0.45%7D%3D%5Cfrac%7B225%7D%7B0.45%7D%5C%5Cn%3D500)
Now we have to find 75% of n.
75% of n = ![\frac{75}{100}*500=75*5](https://tex.z-dn.net/?f=%5Cfrac%7B75%7D%7B100%7D%2A500%3D75%2A5)
75% of n = 375
75% of n is 375.
Keywords: percentage, division
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