Answer:
57 mph
Step-by-step explanation:
were tryin to find its speed in the terms of mph which is miles per hour, so we need to find out how many miles it goes in a hour, so we divide 399 mph by 7 hours to get 57 mph.
 
        
                    
             
        
        
        
Answer:
<em>188 yards </em>
Step-by-step explanation:
Given 
Length of one balloon = 12 feet
Since 1 foot = 1/3 yards
12 feet = x
Cross multiply
1 * x = 1/3 * 12
x = 12/3
x = 4 yards
Hence one balloon will be 4 yards long.
If one balloon = 4 yards long
47 balloons = y
Cross multiply;
1 * y = 4 * 47
<em>y = 188yards</em>
<em>Therefore Cesar will need 188 yards of string for 47 ballooons</em>
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Answer:
Prime.
Step-by-step explanation:
A^2+4a+12
Not factorable.
 
        
             
        
        
        
Answer: 67 on apex
Step-by-step explanation: