Answer:
His brother will take 3.5 hours or 
hours to mow 21 lawns
Step-by-step explanation:
Given:
His brother mows 6 lawns in an hour.
To find the time his brother takes to mow 21 lawns.
Solution:
We will unitary method to find the time he will take to mow 21 lawns.
If 6 lawns are mowed in 1 hour
So, 1 lawn will me mowed in = 
hours.
Thus 21 lawns will be mowed in = 
hours.
Thus, his brother will take 3.5 hours or hours to mow 21 lawns
1. 0 > 3x - 3 - 6
0 > 3x -9
9 > 3x
3 > x
It would be a closed circle starting from 3 going to the right.
2. 4x + 1 - 1 >/ -8
4x >/ -8
x >/ -2
It would be an open circle starting from -2 going to the right.
3. -1 </ 2n + 4 - 5
-1 </ 2n -1
0 </ 2n
Undefined.
4. -6 > 5n + 5 + 4
-6 > 5n + 9
-15 > 5n
-3 > n
It would be a closed circle going to the right
Answer:15+2.50(10x3)=x
Step-by-step explanation:
Since this is a right triangle, you can use the pythagorean theorem, 
, to find XY. Since we know that 15 and 17 are our legs and that XY is the hypotenuse, we can solve it as such:
In short, XY is √514, or 22.67 rounded to the hundreths, units long.
Answer:
$780,000
Step-by-step explanation:
