The number in the blanks is 3
        
             
        
        
        
Answer:
x = 15
Step-by-step explanation:
Substitute: -4/5x + 7 = -5
Rearrange unknown terms to the left side of the equation: -4/5x = -5 - 7
Calculate the sum or difference: -4/5x = -12
Divide both sides of the equation by the coefficient of variable: x = -12 × (-5/4)
Remove the parentheses: x = 12 × 5/4
Cross out the common factor: x = 3 × 5
Calculate the product or quotient: x = 15
So the answer is: x = 15
 
        
             
        
        
        
Answer 
A 64
Step-by-step explanation:
you first multiply 8 times 8 .witch i got 64 so the height is 64
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
<u>Let the watch price be x, then we have:</u>
- 10.25% of x = 41 or
- 0.1025x = 41
<u>Solve for x</u>
 
        
                    
             
        
        
        
Answer:
A) 8, 15, 17.
Step-by-step explanation:
Right triangle obey the Pythagorean theorem. Thus, we choose the two smaller numbers (being the cathetus) and if after applying the P. Theorem we get the biggest of each option  (the hypotenuse) that means that those numbers could be the sides of a right triangle.
The Pythagorean theorem states that: 
Thus:

Option A:
 → 17 = 17 OK!
 → 17 = 17 OK!
Option B:
 → 10 ≠ 12 NO
 → 10 ≠ 12 NO
Option C:
![\sqrt{9^2+11^2} = [tex]\sqrt{202}](https://tex.z-dn.net/?f=%5Csqrt%7B9%5E2%2B11%5E2%7D%20%3D%20%5Btex%5D%5Csqrt%7B202%7D) [/tex] →
[/tex] →  ≠ 21 NO
 ≠ 21 NO
Option D:
 →
 →  ≠ 16 NO
 ≠ 16 NO