What is the perimeter of the polygon in the diagram? A) 2√(a-b)^2
B) 4(a+b)^2
C) 2(a^2 + b^2)
D) 4√(a^2 + b^2)

In right triangle xyz, the right angle is located at vertex y. the length of line segment xy is 12.4 cm. the length of line segment yz is 15.1 cm. which is the approximate measure of angle yzx? 34.8° 39.4° 50.6° 55.2°

The equation m = 19.32v can be used to find the mass m in grams of a pure gold coin with volume v in cubic centimeters. carl has a coin with a mass of 37.8 grams. the coun's volume is 2.1 cubic centimeters. could the coin be pure gold? explain your reasoning. whoever answers this correctly gets marked brainliest! this is also worth a decent amount of points than normal questions!

Hello i need with my math homework i don't understand can someone explain how this works