Only answer if you know the answer just for points. you! : )
worth extra points!

△def is similar to △jkl . in addition, m∠f=90° and m∠k=5(m∠d)

what is m∠d?
triangle image is attached
(best answer will get brainiest! ! )

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9