Mathematics - 5 June 2007

2007-06-05 08:41:17 · 27 answers · asked by Anonymous

If a 10 foot ladder is placed against a building so that the distance from the bottom to the building is 2 feet less than the distance from the top of the ladder to the ground. What is the distance from the bottom of the ladder to the building?

Thank you

2007-06-05 08:26:57 · 3 answers · asked by CHRISTOPHER R 1

2007-06-05 08:18:18 · 7 answers · asked by B Z 4

2007-06-05 08:14:11 · 12 answers · asked by Anonymous

2007-06-05 08:11:51 · 9 answers · asked by Anonymous

I have a table of data:

x y
2 -2
4 -8
6 -32

How can I solve this. Thanks.

2007-06-05 08:06:36 · 6 answers · asked by Anonymous

a. 2 Radical sign 15
b. 2 Radical sign 30
c. 10 Radical sign 12
d. 3 Radical sign 40

2007-06-05 08:03:45 · 7 answers · asked by Anonymous

a. 2 Radical sign 4
b. 16 Radical sign 2
c. 4
d. 4 Radical sign 2

2007-06-05 08:02:56 · 5 answers · asked by Anonymous

2007-06-05 08:02:20 · 5 answers · asked by Barbi_girl 2

a. 3 radical sign 3
b. 9 radical sign 3
c. 3 radical sign 9
d. radical sign 3

2007-06-05 08:01:35 · 4 answers · asked by Anonymous

x-(15x-6)=104

a. -7
b. -6 1/8
c. -6 7/8
d. 7

2007-06-05 07:55:59 · 9 answers · asked by Anonymous

what is 70% of 480?

Did I do this right?

A/480 = .70/100
480 x .70 = 366
So 366 is 70% of 480???

2007-06-05 07:54:26 · 5 answers · asked by marianne d 2

2n-1 / 3 = n-4 / 5

a. n= -1
b. n= 1
c. n= 2
d. n= 13/17

2007-06-05 07:51:58 · 4 answers · asked by Anonymous

ie.....total price is £200 inc vat

i know for a fact that is is £170.21 and vat is £29.79 as i have just looked a bill from my garage....

but what is the formula to fig this out if the bill only read £200...

many thanks lee

2007-06-05 07:48:34 · 17 answers · asked by chunkykid657 1

Solve.
A chemist needs 70 milliliters of a 69% solution but has only 60% and 81% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.

40 ml of 60%; 30 ml of 81%
30 ml of 60%; 40 ml of 81%
50 ml of 60%; 20 ml of 81%
20 ml of 60%; 50 ml of 81%

2007-06-05 07:46:41 · 2 answers · asked by Anonymous

2007-06-05 07:45:53 · 10 answers · asked by Word 1

2007-06-05 07:40:49 · 6 answers · asked by Anonymous

2xy dy=((x^2) + (y^2))dx, y(1)=2

2007-06-05 07:36:01 · 3 answers · asked by Kayla G 1

2007-06-05 07:35:30 · 6 answers · asked by Morris Jude M 2

Find the general solution to the DE.

y'=(2x+3y)/x Thanks for any help!

2007-06-05 07:33:47 · 3 answers · asked by Kayla G 1

Simplify the the square root of 150 in simplest form.

6 times the square root of 3 plus the square root of 3.

2 times the square root of 54 plus the dquare root of 24.

The square root of 72x to the seventh divided by 2 times the square root od 6x to the third.

The square root of 4a over 3, which is a fraction minus 2=6.

2007-06-05 07:31:50 · 8 answers · asked by Gianfi 2

John's height increased from 5'2" to 5'7" during the psast year. What is the rate of increase (to the nearest whole percent) of John's hight over the past year?

I know that when finding rate I need to Rate x base = amount
My question is I am stuck on which one is the base and which one is the amount?
I think that 5'7" is the base and 5'2" is the amount am I correct or am I looking at this completely wrong?

2007-06-05 07:22:45 · 10 answers · asked by marianne d 2

2007-06-05 07:21:19 · 7 answers · asked by Anonymous

2007-06-05 07:18:59 · 20 answers · asked by Annaleigh27 1

i got to fill in details in some form

2007-06-05 07:15:56 · 7 answers · asked by Anonymous

Given triangle ABC with side a = 12, side b = 10 and side c = 8, find the angles and put them in minutes.

2007-06-05 07:14:10 · 4 answers · asked by Anonymous

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

2007-06-05 07:08:26 · 5 answers · asked by Anonymous

question 1'
the height, h centimeters, of water in a rive above its normal level at a time, t days, after a thunderstorm is given by

h= 3t^2 - t^3 0
a) find dh/dt
b)find the rate of change, in centimeters per day, of the height of water in the river after 2.5 days.
c) find the values of t for which the height of water is increasing.


question2'
the size of a population, P, of birds on an island is modelled by p=59 + 117t + 57t^2 - t^3 where t is the time in years after 1970.
a)find dp/dt
b) i) find the positive value of t for which P has stationary value.
ii) determine whether this stationary value is a maximum or minimum
c) i) state the year when the model predicts that the population will reach its maximum value.
ii) determine what the model predicts will happen in the year 2029.

2007-06-05 07:04:58 · 1 answers · asked by Paige M 1

What is the correct methodology for factoring numbers without obvious roots/solutions? This is for the graduate record exam, so I need to know how to apply the correct methodology to more than one number.

2007-06-05 07:02:58 · 6 answers · asked by Annaleigh27 1

Find the first and second derivative of this function.

f(x)= (4x²)(Cos²[3x])

I got f '(x)= 8x Cos²[3x]- 12x² Sin[6x] and
f ''(x)= 8 Cos²[3x] - 48x Sin[6x]-72x² Cos[6x], but I am not sure if either is correct.

2007-06-05 06:59:58 · 7 answers · asked by Cameron K 2