Answer:
Step-by-step explanation:
to solve this system of equations we will add them
 x-3y=-12
2x+3y=3 now +3y-3y=0
3x=-12+3
3x=-9
x=-3
plug in the first equation
-3-3y=-12
-3y=-12+3
-3y=-9
y=3
 
        
             
        
        
        
<em><u>The inequality can be used to find the interval of time taken by the object to reach the height  greater than 300 feet above the ground is:</u></em>

<em><u>Solution:</u></em>
<em><u>The object falls, its distance, d, above the ground after t seconds, is given by the  formula:</u></em>

To find the time interval in which the object is at a height greater than 300 ft
Frame a inequality,

Solve the inequality
Subtract 1000 from both sides


Time cannot be negative
Therefore,
t < 6.61
And the inequality used  is: 
 
        
             
        
        
        
Answer:
1
Step-by-step explanation:
Any base with an exponent of 0 equals to 1.
6^0 = 1
 
        
                    
             
        
        
        
 2.17720 × 10^2 is the answer
 
        
             
        
        
        
The answer for the algebraic expression is 5-6t