Please dont steal I just need a bit of help here I would really appreciate it I will give brainless

Step-by-step explanation:

I gave you the answer earlier too!

for more info !

Which means the 3rd side of the triangle is equal to 1/2 of the line drawn by joining the mid points

which means

2x-4 = 1/2×21

thus, 2(2x-4) =21

=> 4x-8 = 21

4x = 29

the answer is 844

step-by-step explanation:

it is 844 because if you add 836.50 + 7.5 you will get 844