(WILL GIVE BRAINLIEST) Amelia can finish research for a History project in 2 hours. Matthew can finish the same research in 4 hours. How long will it take them to finish the research if they work together?

2 hours pls mark as Brainllest

Step-by-step explanation:

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

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