12.45 by 5 hurryokokkokokokkoko

Need showing work for this problem 56.25 ×25.80

Ntriangle abc, m∠a = 35° and m∠b = 40°, and a=9. which equation should you solve to find b?

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?