Find angle a if arc mde is equal to 50 degrees and arc mbc is equal to 10 degrees

m∠A = (1/2)(mDE - mBC)

m∠A=(1/2)(50-10) = (1/2)*40=20

m∠A = 20

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of