On a test, 1/4 of a class earns A’s and 1/3 earned B’s. What part of the class earned either an A or a B? Please give an actual answer and explanation if possible.

I think its 7/12

Step-by-step explanation:

what i did was find the common denominator for both and it would be

1/4= 3/12      1/3= 4/12 and then i added it all together and it gave me 7/12

7/12

Step-by-step explanation:

1/4 got A's, 1/3 got B's. 0.25 plus 0.33... = 0.583...

0.583... simplified as a fraction is 7/12

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2

pi or 3.14159265359 is an irratinal decimal