Answer:
<u>4 hours</u>
Step-by-step explanation:
Equations :
Larry : <u>y = 20x + 90</u>
Barry : <u>y = 30x + 50</u>
Equate both to find the number of hours at which they both charge the same :
- 20x + 90 = 30x + 50
- 30x - 20x = 90 - 50
- 10x = 40
- x = <u>4 hours</u>
 
        
             
        
        
        
The second Version of the game is greater for hitting the down button because substituting any number for x, the second equation would always end up having a greater amount.
        
             
        
        
        
A rhombus is quadrilateral where all 4 sides are of equal length. Thus
5x + 2 = 2x + 12
3x = 10
x = 10/3
substituting x into either expression, yields
56/3
therefore side AB = 56/3
        
             
        
        
        
No of red marbles = 5 
Total number of marbles =14
By using probability formula,
P(E)= Number of favorable outcome /
 Total number of outcomes 
P(E)= 5/14
 I hope that was useful ☻