Algebra 1 problems. I need help Today, it's really urgent?
Ok, so I need some help with these Algebra 1 problems. I just can't figure them out, and my text book doesn't show me how to do these problems. I need the answers today, so please help me if you can. I know that this is last minute, but it is urgent. Thanks so much in advance. Here are the problems:
9.) Two numbers, 4 and a, have a geometric mean of 12.
Find the value of a.
10.) Two numbers, 3 and a, have a geometric mean of 9.
Find the value of a.
11.) Solve the equation by completing the square:
x^2 + 2x = 3
12.) Solve the equation by completing the square:
x^2 + 8x = 14
15.) Find the distance between the two points:
(5,8), (2,4)
16.) Find the distance between the two points:
(7,12), (1,4)
19.) You and a friend go biking. You bike 12 miles north and
2 miles east. What is the straight-line distance from your
starting point? Round answer to the nearest hundredths.
22.) A company had sales of $500,000 in 1996 and sales of
$720,000 in 1998. Use the midpoint formula to find the
company's sales in 1997.
Please help! The sooner you reply, the better. Thanks a lot!