Answer:
76%
Step-by-step explanation:
So basically 528 represents a full circle and the amount in the circle is 2:5 to that in the stalls.
So you divide 528 by 2 and then multiply it by 5 to get a full stall of 1320
you then add 1320 and 528 to get a full theater of 1848
to get 2/3 of seats in the stall you divide 1320 by 3 and then multiply it by 2 to get 880.
For 2/3 of the stall and a full circle you add 880 and 528 to get 1408.
You divide the amount of people in the theater on Friday by the total amount of people which the theater can hold so 1408 divided by 1848 and you get the percentage of 76% 
 
        
             
        
        
        
We have an equation: ?/350= 72/100
Cross multiply:
100*?= 72*350
⇒ ?= 72*350/100= 252
72% of 350 friends is 252 friends~
        
             
        
        
        
Answer:
x = -9/4
Step-by-step explanation:
−2(x + 1/4) + 1 = 5 
Subtract 2 from both sides.
−2(x + 1/4) = 4 
Divide both sides by -2.
x + 1/4 = -2
Subtract 1/4 from both sides.
x = -2 1/4
x = -9/4
 
        
             
        
        
        
Answer:
   a.  81.5%
Step-by-step explanation:
The z-score for 400 is ...
   Z = (X -μ)/σ = (400 -500)/100 = -1
The z-score for 700 is ...
   Z = (700 -500)/100 = 2
The empirical rule tells you that 68% of the distribution is within ±1σ of the mean, and 95% is within ±2σ of the mean. Half of that first number is in the range Z = -1 to 0, and half that second number is in the range Z = 0 to +2. So, the probability you want is ...
   (1/2)(68%) + (1/2)(95%) = 81.5% . . . . matches choice A
 
        
             
        
        
        
Answer:
0.037037037037037 i think
Step-by-step explanation: