H²+10h+21 = 0
h²+3h+7h+21 = 0
h(h+3)+7(h+3) = 0
(h+3)(h+7) = 0
h+3=0
h = -3
h+7=0
h=-7
        
             
        
        
        
Answer:
45%
Step-by-step explanation:
For simplicity, let use assume there are 100 students in the school.
No. of students to complete college = (30/100) x 100 = 30 Students
President wants to increase by 50% = (50/100) x 30 = 15 Students
New set goal = 30 + 15 = 45 students. 
Total number of students = 100 students
Therefore;
Rate goal % = (45/100) x 100% = 45%
 
        
             
        
        
        
Answer:
7 degrees colder
Step-by-step explanation:
15 degrees - 8 degrees = 7 degrees
 
        
             
        
        
        
Well to find the value of the interior angle of a hexagon it would be out of a total of 720 degrees therefore just subtract the values of the known interior angle values and you should be able to get the value of the interior angle of X
        
             
        
        
        
Using one of the above equations, you can find the value of x. 
tan x = 84/13 => x = tan-¹(84/13)
x = 81.20°
Hope that helps