Justin and Chris both convert 45 pounds to kilograms. Justin gets an answer of 20.43 kilograms and Chris gets an answer of 99 kilograms. Who is correct and what mistake did the other person make?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?