Answer:
The roots are the x-intercepts, where the parabola crosses the x-axis. If the parabola opens up and it's vertex is below the x-axis then it crosses the x-axis in two places and has two (real) roots.
Step-by-step explanation:
You can see from the table that the y coordinate is always obtained by doubling the x coordinate and switching its sign. So, the relation is
To invert this function, we must solve for y. Simply divide both sides by -2 and we have
Rename the variables to get
It always has zeros in the tens and ones place
Answer:
7
b
+
3
r
Step-by-step explanation:
Answer:
22 ft^2
Step-by-step explanation:
The area of a table with diameter 6 ft
A = pi r^2 = pi (6/2) ^2 = pi 3^2 = 9pi
The area of a table with diameter 8 ft
A = pi r^2 = pi (8/2) ^2 = pi 4^2 = 16pi
Subtract 16pi-9pi = 7pi
Using 3.14 for pi
7 * 3.14
21.98 ft^2
To the nearest square foot
22 ft^2
