Which of the following equations are true? select all that apply.
a 7+(-7)=14
b -4+9=5
c )=7
d -2-6=-8

Find the simple interest earned to the nearest cent for each principal,interest rate,and time 735 7% and two and a half years

Use δjkl and δmpn to determine whether don's claim is true or false. which of the following should don use to prove the triangles are similar? sss sas aas aa

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor