Robert is 15 years older than his sister, Helen. The sum of their ages is 63. Find their ages.

Whats the reciprocal of 23

What 3.999 rounded to the nearest tenths

Making a career decision is simple, and it's not necessary to use a process. true or fralse

Lala went to the store to buy snacks for her grandmother. She bought 1.4 pounds of cashews that costs $8.90 per pound. She also bought 0.7 pounds of walnuts that cost $8.10 per pound. Did Lala spend more on cashews or walnuts? How much more?

What is (d plus 3) plus 8 simplified?

If I have 18eggs and use 1/4 of them to make a cake how many eggs have I used?

If you double a number and then add 1616 , you get two fifths 2 5 of the original number. what is the original number?

B. Contains (-3, - 2) and has slope 3

Mei ling will take out a student loan to pay the additional cost. the anual interest rate is 6.25%. how much will she owe in interest at the end of one year if she does not repay the loan.

t, starts at 25 at midnight, when h=0. next few hours, the temperature drop 3 degrees ever hour, which equation represents the temperature, t at hour h