Answer:
Rectangular book--
two 8 1/2 sides
two 9 1/4 sides
8 1/2*2=17
9 1/4*2=18 1/2
17+18 1/2= 35 1/2
The perimeter of the textbook is 35 1/2 inches or 35.5 inches.
-this is not mine btw creds to sunflowerem :))
 
        
             
        
        
        
we are given 
62% of the students take math
so, 

49% take science

38% take both science and math
n(M∩S)=38
now, we can use union formula 
n(M∪S)=n(M)+n(S) -n(M∩S)
now, we can plug values
and we get 
n(M∪S)=62+49 -38
n(M∪S)=73
so, 
the percentage takes at least one science or math course is 73%..........Answer
 
        
                    
             
        
        
        
Answer:
25
Step-by-step explanation:
So consecutive integers, just means they're separated by a value of 1. This can be generally expressed as "a, a+1" where these two values would be consecutive integers assuming "a" is an integer.
So let's express Hassan's age as the variable "x", since it's unknown. Since Cameron is older, and by definition of a consecutive integer, Cameron's can be expressed as "x+1"
So the equation we need to set up is Cameron's age + 5(Hassan's age) = 145
So we can substitute the variables we defined to express Cameron and Hassan's age: 
Distribute the 5: 
Add like terms: 
Subtract 1 from both sides: 
Divide both sides by 6: 
Since we used "x" to represent Hassan's age, Hassan's age is 24. Since we used "x+1" to represent Cameron's age, Cameron's age is "24+1" which is just 25
 
        
             
        
        
        
Answer:
6.5
Step-by-step explanation:
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