Using the formula for area of a circle: area = pi x r^2
You now have:
225pi ft^2 = pi x r^2
Divide both sides by pi:
225 = r^2
Take the square root of both sides:
r = 15
The radius is 15 feet.
The diameter is the radius x 2:
Diameter = 15 x 2 = 30 feet.
Answer: 30 feet.
There are a total of 19 marbles.
The chance of picking a blue marble is
Since you didn't put that marble back in, there are 18 marbles still in the bag.
The chance of picking a brown marble is <span>
Multiplying the two values together results with </span>
About Slope Intercept Form:
- y = mx + b
- m is the slope
- b represents the y-intercept
For the graphing one, since the slope is positive, you have to go up 5 and right 2 because the slope equals <u>rise</u>
run.
5 represents rise & 2 represents run. Then -4 is the starting point, the y-intercept.
Hope this info helps!! :)
$6.80 dollars for the item if it is marked down by 15%