1.
8 < x(7 - x)
We can now substitute the given values to see which one satisfies the inequality.
8 < 2(7 - 2)
8 < 10
A is the correct answer.
2.
D.
This lists all of the factors of 24.
Answer:
$450
Step-by-step explanation:
The area of the square is 40,000 square feet so the square's side length is 20 (√40,000).
The company charges $2.50 per foot, and the perimeter is 80 (20*4), so the cost is $400 ($2.50 * 8).
Add on the $50 installation fee and the total cost is $450 ($400 + $50).
The probability to be inside the large square is 3/10 and the probability to be inside the small square is 7/10
1. Use Difference of squares: a^2-b^2=(a+b)(a-b)
(x+k)(x-k)=0
2. Solve for x and k
x=+-k
k=+-x
