Answer:
Step 2
Step-by-step explanation:
Mario made a mistake in Step 2 when substracting
from
. When substracting his result ended up being
but it is actually....

so the right answer is 
The second answer from the top is correct. Your original choice is incorrect because the 7x and the 3 are not both being squared as the statement suggests.
Answer:
18
Step-by-step explanation:
hope this helps! :D
have a miraculous day!! <3
Answer:
48 degrees.
Step-by-step explanation:
The value of a triangle equals 180* in total, so, 47 + 85 = 132.
180-132=48*.
Answer:
Area= 525
Step-by-step explanation:
14x9=126
3x7=21
14x27=378
126+21+378=525