You need to simplify so one-fifth would be 3/15 and 2/3 would be 10/15 so you need to add that together and it would be 13/15
2 + 2 = 4
4 is the answer :)
The area of a circle is pi*r^2.
The angles in a circle add up to 360 degrees.
Let's say I have a circle with radius 2.
The total area of the circle is pi* (2^2) = 4pi
Let's say I cut out 15 degrees of this circle. This piece is 15 out of 360 of the whole circle.
The area of this part is (15/360) * 4pi
The rest of the area is (360-15)/360 * 4pi.
I hope this helps.
It would take them 8.5 hours.
Explanation:
Since they are painting the room together, they would basically each paint half of the room. So if they were painting half of the room each, it would take them half of the time that it would
normally take each of them. Half of Sally's time is 3.5 hours. And half of John's time is 5 hours. When you add them together, you get 8.5 hours.
Hope this helps!
Answer:
The x-intercepts are 
and 
.
Step-by-step explanation:
We are given the equation
Begin by dividing both sides of the equation by 2:
Next, take the square root of both sides. Remember that there are two solutions to a square root, the positive and the negative root:
Split the equation into two based on the two solutions:
Solve each equation by subtracting 1 from both sides:
Since the x-intercepts are the solutions to a quadratic, we know the solutions are (2,0) and (-4,0).
