There are 400 students in a school. In Zachary's class, 18 out of 30 students participate in after-school activities. Based on Zachary's class, about how many students in the school are predicted to participate in after-school activities?
Step-by-step explanation:
✰ 
- AD = 15 , AB = 8 ,
DAB
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- Height & Area of the given parallelogram
✰ 
In right angled triangle ABE :
- Hypotenuse ( h ) = 8
- Perpendicular ( p ) = h [ height ]
= 20°
Now , Using trigonometric ratio :

Plug the known values :
⟶ 
⟶ 
⟶ 
⟶ 
Now , We have :
- Base ( b ) = 15
- Height ( h ) = 2.72
Finding the area of a parallelogram whose base and height are 15 and 2.72 respectively :
❀ 
⟶ 
⟶ 
Hence , Our final answer :


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Average rate is given by,

for section A, a=1, b=3
hope this helps.
Answer:
0.82375
Step-by-step explanation:
6.59 / 8 = 0.82375 oz / dollar
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