Mathematics - 14 July 2007

what the formula? please help?

2007-07-14 13:27:25 · 9 answers · asked by Anonymous

If an observer is 200 ft. from the building and the angle of elevation to the top of a building is 60*, what is the height of the building?

2007-07-14 13:19:16 · 3 answers · asked by Sara 3

Find the point equidistant from (-6,-1) and (-1,2) and at a distance 5 from (-2,7)

2007-07-14 13:10:24 · 3 answers · asked by sweet_candy 2

Find the slope and the y-intercept.y = –4x

Find the y-intercept.
–x + 2y = 4
A) (–4, 0)
B) (0, 2)
C) (2, 0)
D) (0, –4)

2007-07-14 13:08:42 · 5 answers · asked by busy me 2

Determine which two equations represent parallel lines.
(a) y = –8x + 4 (b) y = 8x + 4 (c) y = 1/8x + 4
(d) y = –8x + 6

A) (a) and (b)
B) (b) and (c)
C) (a) and (c)
D) (a) and (d)

Write the equation of the line with slope 4 and y-intercept (0, –5).

school year round. practice questions. totally lost!

2007-07-14 13:04:27 · 7 answers · asked by busy me 2

2007-07-14 12:36:05 · 3 answers · asked by nascarxcore 2

find the sum of each of the infinite series.

A. 9 - 3 + 1 - (1/3) + (1/9) ...

B. (1/2) + 1 +2 + 4 ....

2007-07-14 12:19:20 · 4 answers · asked by Sara 3

http://i181.photobucket.com/albums/x85/ctti_3/untitled-24.jpg

f is concave down on (-inf, 0) would that be true even if there's a 0 (1st deriv) at x=-3
then the answer would be all true?

2007-07-14 12:03:26 · 2 answers · asked by chimstr 1

is the closed interval method the same as max and min?

2007-07-14 11:51:07 · 1 answers · asked by ruby 2

In Degrees and Minutes, no sarcasim please.

2007-07-14 11:36:17 · 3 answers · asked by °†¿ÐámñéÐ?†° 2

Dividing Rational Expressions
__1__ + __1__
(c-d) (d-c)



__6__ + ___8__
(5y²-45) ( 3-y)


__10__ - ___6b___
(a-b) ( a ² - b ²)

Solving Rational Equations

_3_ - __4r__ = -4
(4r) (r -3)

_3__ ∕ _4x_ = 4
(4x) (x-3)

_u__ - _2u___ = _u²___
(u+2) (2-u) (u²-4)



Thank you so much! I put the denominators in brackets because they bunch up for some reason.

2007-07-14 11:33:53 · 3 answers · asked by Anonymous

Show that sinθ = cosθ tanθ

2007-07-14 11:33:49 · 3 answers · asked by °†¿ÐámñéÐ?†° 2

I am preparing to take advanced placement calculus BC starting in september, but want to prepare over the summer, what are the main topics I should study in order to prepare for calulus? what are some topics that must be mastered before entering calculus? thanks in advance.

2007-07-14 11:30:19 · 7 answers · asked by Carpe Diem (Seize The Day) 6

Hi. I'm trying to simplify this: 36/B=(36/30-B)-1. How am I supposed to do this? I know how to cross multiply, but im not sure how to do it if there are two fractions on one side. I know that the completely simplified answer is B^2+42B-1080=0, if that helps. Please help me! Thanks

2007-07-14 11:25:04 · 5 answers · asked by Anonymous

1)Donna invested her 33,000 bonus and received a total of 970 in interest after one year. If part of the money returned 4% and the remainder 2.25% then how much did she invest at each rate?

2)at gwens garage sale all books were one price, and all magazines were another price. Harriet bought four books and 3 magazines for 1.45, and june bought 2 books and 5 magazines for 1.25. what was the price of a book and what was the price of a magazine?

3) Ziggys famous yogurt blends regular that is 3% fat with its no fat yogurt to obtain low fat yogurt that s 1% fat. How many pounds of regular yogurt and how many pounds of no fat yogurt should be mixed to obtain 60lbs of low fat yogurt?

4)the probability that the san francisco plays in the next super bowl is 9 times the probability that they do not play in the next super bowl. the probability that they play in the super bowl plus the probability that they do not play is 1. what is the probability that they play in the next super bowl?

2007-07-14 11:08:13 · 3 answers · asked by Mandalicious 1

2007-07-14 11:06:18 · 8 answers · asked by mikeleeiscool 1

2007-07-14 11:05:50 · 9 answers · asked by mikeleeiscool 1

Rt=1/█(1/R^1 +1/R^2 ) simplify the formula.

2007-07-14 11:02:30 · 4 answers · asked by Anonymous

could you explain?

2007-07-14 10:51:47 · 10 answers · asked by Anonymous

10^4

and

(a^2 b^0 c)^0

your help is appreciated!

2007-07-14 10:47:13 · 3 answers · asked by Anonymous

Circumference of the earth is 25,000 miles. Imagine you have a wire that is 25,000 miles plus 3 feet, and you wrap the wire around the equator of the earth. You wrap the wire so that both ends meet and do not overlap. The wire is hovering above the equator, now is there enough room between the earth and the wire for a 5 inch tall chick to walk in between? Or will the chick simply step over the wire? Or will the wire be at a height where the chick cannot go under or over the wire? Keep in mind that the earth is not a perfect circle, it is more of an ellipsoid shape. Details please.

2007-07-14 10:44:16 · 3 answers · asked by Anonymous

2007-07-14 10:37:11 · 4 answers · asked by Anonymous

Solve the problem.

To get a C in history, Nandan must average 70 on four tests. Scores on the first three tests were 69, 79, and 60. What is the lowest score that Nandan can get on the last test and still receive a C?

70
72
69
2

2007-07-14 10:36:45 · 8 answers · asked by Anonymous

A person travels up a path at 8 in the morning from his car and arrives there at the destination at 4pm. Once there, the person decides that he doesn't like the location of the cabin and decides to return back to his car the following day. He leaves at 8am and gets back to his car at 2pm. Is there a place along his route that he passes through at the exact same time between the day before and the day after? ..question relates to continuous functions.

2007-07-14 10:31:35 · 1 answers · asked by Anonymous

2007-07-14 10:28:33 · 11 answers · asked by dmciscool2007 2

Find the median of the set of data.

8, 9, 12, 23, 31, 37, 47

12
23
31
24

2007-07-14 10:15:01 · 4 answers · asked by alw0322 1

SOLVE FOR THE INEQUALITY.

2007-07-14 10:08:11 · 7 answers · asked by Anonymous

2007-07-14 09:38:35 · 4 answers · asked by Andrew K 1

A certain provincial park has 220 campsites. A total of 80 sites have electricity. Of the 52 sites on the lakeshore, 22 of them have electricity. If a site is selected at random, what is the probability that

a) it will be on the lakeshore?
b) it will have electricity?
c) it will either have electricity or be on the lakeshore?
d) it will be on the lakeshore and not have electricity?

2007-07-14 09:34:31 · 7 answers · asked by Anonymous

the square root of 7/8?
the cube root of 3/4?

2007-07-14 09:25:33 · 3 answers · asked by Anonymous