Me and my friend is doing challenge who can get the most messages using a text now second number 619 478 7271 it been at least an hour.. and she 45 and i stll stuck at 25.. lol (that is not my real number) oh and i do need help with a question Write 230,000,000,000 in scientific notation.

What is negative 3/9 times negative 2/8 ?

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point

This circle is centered at the origin, and the length of its radius is 6. what is the circle's equation? a. x^2+y^2=36 b x^2+y^2=6 c x+y=36 d x^6+y^6=1