the is c happy now!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
<span>Changing the grouping of the addends should not change the sum, according to the associative property of addition. You might group them differently with (50 + 3) + 47, so that you have 50 + (3 + 47). You might not regroup them with (16 + 4) + 5 rather than 16 + (4 + 5).</span>
Answer:
4 feet by 12 feet
Step-by-step explanation:
90 degrees because there is a shade which indicates that it is a right triangle
I am not 100% sure but i think it is 1056.25. i could be wrong though