Last year, trey had $10,000 to invest. he invested some of it in an account that paid 7% simple interest per year and he invested the rest in an account that paid 5% simple interest per year. after one year, he received a total of $620 in interest. how much did he invest in each account?

the least common denominator is 40

the correct is answer is a 9-sided polygon!

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

step-by-step explanation: