Answer:
8/12
Step-by-step explanation:
find common denominator then add
5/12 + 3/12 = 8/12 or 2/3 as simplify
Answer:
A (2,1)

So, right off the bat, you can tell that the ordered pair (2,1) is most definitely NOT the solution to this system.
Answer:
11,355
Step-by-step explanation:
Because it's 3,785 per gallon, you just have to multiply that by three, which gets you 11,355
Getting the central area of a polygon is not possible. Probably the question refers to the central angle. In a a regular polygon, getting the central angle is that you need to use the formula.
Central Angle of a polygon = 360 degrees / number of sides of a polygon.
Why 360 degrees? Because, a circle has a total of 360 degrees. And a circle is a polygon with no sides.
Laura has a total of 13 books. To pick 3 out of this 13 books is expressed as 13C3 which is equal to 286. Now to pick a science and 2 mathematics books may be expressed as,
(4C2) x (6C1) = 36
The probability is the quotient when 36 is dived by 286. The answer is 18/143 which is approximately equal to 0.126.