Mathematics - 5 December 2007

the perimeter of a triangle is 82cm. the longest side is 13cm more than the shortest side. the medium side is 6 cm more than the shortest side. find the lengths of the sides.

and

the length of a rectangle is 11 inches longer than its width. the perimeter is 98 inches. find the length and width.

thankyou

lurv s

2007-12-05 15:50:44 · 4 answers · asked by ? 4

Use the given mean to find the missing number in each data set.

12,b,17;mean:14
7,8,8,b;mean:8
1,1,2,4,5,b,10,10;mean:5
76,77,77,b,86,88,91;mean:82

2007-12-05 15:41:49 · 5 answers · asked by DJS 1

2007-12-05 15:34:47 · 1 answers · asked by st234 2

Let x be the number of minutes after 11:00 that a bus leaves the bus station. Assume that the distribution of times is approximately normal w/ a mean of fifteen and standard deviation of 4 minutes.

(1) if a person gets to the bus station at 11:10, what is the probability thtat the person has missed the bus?

(2) If a person is willing to risk a 20% chance of not making the bus, what is the maximum number ofminutes after 11:00 that the person can reach the station?

(3) What time should the person reach the station to have a 50/50 chance of catching the bus?

I AM SO CONFUSED! Your help is truly appreciated!

2007-12-05 15:31:44 · 2 answers · asked by Weather Bureau T 1

log base(6) 4 = x

2007-12-05 15:31:13 · 2 answers · asked by Anonymous

2007-12-05 15:29:53 · 6 answers · asked by Anonymous

use a triple integral to find volume of the tetrahedron enclosed by the coordinate planes and the plane
2x+y+z=22

i did ʃʃʃdzdydx
0<=x<=2
0<=y<=4-2x
0<=z<=22-2x-y

i got the answer to be 72 and thats wrong. i tried to go back to see where i messed up but nothing caught my eye

2007-12-05 15:24:30 · 4 answers · asked by ♡♥EM♡♥ 4

d/x, integral sign x^2 on top x^3 on bottom, dx/lnx when x=1/2.

2007-12-05 15:23:10 · 1 answers · asked by J.T. 3

limit as n goes to infinity, sigma sign with 2n on top and i=n+1 on bottom, 1/i

2007-12-05 15:22:29 · 1 answers · asked by J.T. 3

Carol throws a softball upward from a height of 3 ft above the ground and with an initial velocity of 24 ft/second.

a. What is the maximum height the ball reaches?
b. When does the ball reach its maximum height?
c. When does the ball hit the ground?

keep in mind I want to know HOW to do this not just the answer.

2007-12-05 15:08:40 · 2 answers · asked by Anonymous

I understand Riemann sums but dont see the connection to integral calculus

2007-12-05 15:07:03 · 4 answers · asked by Anonymous

I need to simplify this using factoring: sec3x – sec2x – secx +1

This is read as: Secant cubed x minus secant squared x minus secant x plus 1.

Need to get it to most reduced/simplified form USING FACTORING.

Thank you; very much appreciated.

2007-12-05 15:02:57 · 0 answers · asked by Thoreau 1

At what rate is the volume of the snowball decreasing when the diameter is 8 cm?

2007-12-05 14:46:52 · 2 answers · asked by sara l 2

solve?

2007-12-05 14:45:10 · 3 answers · asked by mikegemmati 1

so i missed the day when we learned about tan. and today i have no idea what the teacher was talkin about in class can anyone like explain it to me

2007-12-05 14:42:23 · 2 answers · asked by mikey 1

my 4th grade son has this as home work & I think its multiply he thinks its add and my 9th grader and 19 year old never had that (so they say)please help....thanks

2007-12-05 14:41:03 · 3 answers · asked by need it fixed 1

its like,..eventually those hu know math are regarded as smart people...even though they wud do so poor in other subjects

2007-12-05 14:35:26 · 13 answers · asked by AskMe 2

i need the answer to the question

2007-12-05 14:30:03 · 7 answers · asked by Anonymous

2007-12-05 14:28:16 · 4 answers · asked by Anonymous

Hello, does anybody know how to do this?

Integral sign with e on top and L on bottom. (2+ln x)to the power of 3 divide all of that by 5x ??????

thank you in advance.

2007-12-05 14:22:33 · 2 answers · asked by Anonymous

A total of 50 juniors and seniors were given a mathematics test. The 35 juniors attained an average score of 80 while the 15 seniors attained an average of 70. What was the average score for all 50 students who took the test?

A. 73
B. 75
C. 76
D. 77
E. 78

2007-12-05 14:18:44 · 6 answers · asked by Astro J 1

Okay I admit I'm really old school but my arithmetic doesn't jive with the powers that be. I am a level 1 and I have been on this site for three days. I have answered all the questions they allow me per day, so why do my stats say I've only asked 56 questions? Each day so far I get that 'you've reached your limit' message just as I reach a question I can get my teeth into. Whats up with this? Is my arithmetic wrong or is the computers, in my old one room schoolhouse three times twenty is '60' not 56. Any help would be appreciated. Apparently I'm only semi literate.

2007-12-05 14:15:52 · 1 answers · asked by Mike S 7

If Pi1: 2x-6y-z+12=0 and Pi2: -6x+18y+3z+10=0

Calculate the distance between Pi and P2

2007-12-05 14:15:37 · 1 answers · asked by Mayx 3

please provide ur solutions. thxs

(a+?)^2= a^2 + ?a + 49

p.s- ^= exponent of the number

2007-12-05 13:55:39 · 3 answers · asked by Anonymous

please help

2007-12-05 13:52:18 · 5 answers · asked by Anonymous

Please Help

2007-12-05 13:51:08 · 12 answers · asked by Anonymous

or has nobody been able to rpove it yet and its just one of those things that is accepted because nobody has disrproved it? Plz Help!

2007-12-05 13:44:14 · 1 answers · asked by In Testimony Whereof 3

A right triangle has one angel that is 60 degree.The side adjacent to the 60 degree angle has the length of 7 in.How long is the opposite side?

2007-12-05 13:39:27 · 6 answers · asked by High_Sun 2

A homeowner has poured a rectangular concrete slab in her backyard to use for a barbecue area. The length is 3 feet more than its width. There is a 2ft wide flower bed around the barbecue area. If the area covered by the barbecue area and the flower bed is 270 square feet, find the dimensions of the barbecue area.

2007-12-05 13:31:02 · 1 answers · asked by Anonymous

math

2007-12-05 13:22:25 · 2 answers · asked by Anonymous