Answer:
the area is 50.24
Step-by-step explanation:
to find the area of a quarter circle, use the formula <u>π x r^2</u>
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Answer:
3 students in blue and 12 in white
Step-by-step explanation:
set 1/6 and 2/3 of it and you need to find that of 18
so you take 2/3*18 and get 12 students 
and 1/6*18 and get 3 students
 
        
             
        
        
        
Answer:
 169
Step-by-step explanation:
Given data
The function is 
5x^2+7x=6
rearrange
5x2+7x-6=0
From the above expression, we can see that
a=5
b=7
c=-6
Substitute into the expression b^2-4ac
=7^2-4*5*-6
= 49-(-120)
=49+120
=169
Hence the answer is 169
 
        
             
        
        
        
Answer:
$40
Step-by-step explanation:
2 1/2 times the week
8 x 2.5 = 20
12 x 2.5 = 30
40 x 2.5 = 100