Answer:
The equation that best represent the situation is;
x^2 = 576
or x^2 -576 = 0
Step-by-step explanation:
Here, we want an equation that best represent the given information in the question.
The length of the garden is twice as long as it is wide 
So, given that x is the length of the garden, then x/2 will represent the width of the garden 
From the description given in the question, the garden would be rectangular in shape.
Mathematically, the area of a rectangle can be calculated using the formula;
L * B = area 
Thus;
x * x/2 = 288
x*2 = 2 * 288
x^2 = 576 
 
        
             
        
        
        
So...
ANS of 
7(a)=(30)+(n x 20)        {n=n. of hours}
7(b)= with my mind
        
             
        
        
        
Answer:

Step-by-step explanation:


Use the formula of a³ - b³ = ( a - b) ( a² + ab + b² )


Hope I helped!
Best regards! :D
 
        
             
        
        
        
Answer: 5%
Step-by-step explanation:
A meteorologist predicted that Monday's hight temperature would be 76F and on Monday, the temperature reached 80F. 
The percentage error will be
Percentage error= 
(Exact value-Forecasted value)/exact value x 100
= 76-80/80 × 100
= -4/80 × 100
=4/80 × 100
= 400/80
= 5%
The percentage error is 5%.
 
        
             
        
        
        
Answer:
1) 6,000 B) 800 C) 4,000
2)7,500
3)third and fourth one
4)6,951
Step-by-step explanation:
just because