Answer: x = -4 or x = 7
Step-by-step explanation:
x^2 - 3x - 28 =/>
 (factor) 
(x^2 + 4)(x-7) = 0 
x + 4 = 0 or x - 7 = 0 
(subtract -4 from 0 and 7 from 0)
x = -4 or x =7
 
        
             
        
        
        
Answer:
1159
Step-by-step explanation:
She wants to read 1000 pages per week for five weeks. 
So in total she wants to read 1000 * 5 = 5000 pages. 
The first three weeks she read 894 pages per week. 
So during the first three weeks she read a total of 894 * 3 = 2682 pages.
We want to find how many pages she must read per week for the last two weeks to reach her goal. 
Goal: 5000 pages
Pages read so far: 2682 
Weeks remaining: 2 
To find how many pages she must read for the last two weeks we simply subtract the number of pages she read during the first 3 weeks (2682 ) by her goal ( 5000 ) 
5000 - 2682 = 2318
So she must read 2318 pages during the last 2 weeks. 
If we want to find the amount of pages she must read per week during the last 2 weeks to reach her goal, we simply divide the amount of pages she must read during the last few weeks to reach her goal ( 2318 ) by the number of remaining weeks ( 2 ) 
2318 / 2 = 1159 
So for the last two weeks she must average 1159 pages per week. 
 
        
                    
             
        
        
        
Your question does not give enough information for me to answer
        
             
        
        
        
Ht of ceiling = 10 ft which is two-thirds of living rm ceiling
Ht of living rm ceiling = 2/3x = 10 ft
2/3h = 10 ft
2/3h times 3/2 to solve for h = 10 times 3/2
h = 30/2
h = 15 ft
        
             
        
        
        
Answer:.OA. -4
Step-by-step explanation: