Q4, 4y²=60
 y=√15 ( i am not sure)
q6, (5+y) ²=81
 5+y=9
 y=4
q7 (x+4) (x) =77
 x²+4x-77=0
 (x+11) (x-7) =0
 x=-11(rej) or x=7
 therefore ,length= 7+4=11cm
 breadth=7cm
        
             
        
        
        
La respuesta es 112, es una regla de tres simples
        
             
        
        
        
Answer: 394 cm3
Step-by-step explanation:
volume of cylinder - volume of 5 balls=extra volume
voc=πr2h=1181.09
pi=22/7
r=3.35
h= 5 x diameter of ball=33.5 (diameter = 2r)
vo5b=5(4/3πr3)=787.4
r=3.35
ev=voc-vo5b
=393.69
ROUND TO 394
 
        
             
        
        
        
Answer:
6x^2-28x+30
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The area of the shaded region is 
Step-by-step explanation:
we know that
The area of the shaded region is equal to the area of the circle minus the area of the rectangle
so

we have



substitute the values

 ----> exact value of the shaded area
 ----> exact value of the shaded area