Mathematics - 14 October 2007

how do i solve this?

2007-10-14 11:18:16 · 9 answers · asked by Anonymous

I get confused on this.

2007-10-14 11:18:14 · 2 answers · asked by Mo Girl 1

How accurately should you measure the side of a square to be sure of calculating the area within 2% of its true value?

2007-10-14 11:10:18 · 5 answers · asked by maxpowerrys 1

HEY!! i need help with these problems! thank you!!!


Write each expression asa complex number in standard form:


(3+i)(4+i)


(3-4i)(4-3i)


(2+6i)(2-6i)


3+2i/3-2i


√6/√6-i




thank you so much!

=]

2007-10-14 11:08:26 · 8 answers · asked by bosstastic<3 3

a grocer displayed 66 cans of corn in the form of a pyramid which had one can on top, 2 cans below it, 3 cans below that, and so on. how many cans were there in the lowers layer?

I HAVE TO USE THE ARITHMETIC SEQUENCE EQUATIONS!!!

2007-10-14 11:06:02 · 2 answers · asked by Anonymous

(x)/(x-6) - (6)/(x-6) = 5???

help please...

2007-10-14 11:04:07 · 1 answers · asked by jessicamartinez40 1

3(y-1) / (5) + 4 = y???

2007-10-14 10:58:09 · 3 answers · asked by luishernandez66 1

(x-19)/(x-35) - (1)/(x) - (x-5)/(x)???

2007-10-14 10:55:56 · 2 answers · asked by ronyyang 1

The ratio of similarity between two polygons is 2:3. if the perimeter of the simliar polygon is 14, find the perimeter of the larger polygon.


please help i have no clue what im doing

2007-10-14 10:54:35 · 2 answers · asked by Y0G1TH3B3AR 3

heres a problem thats bugging me

12c - 4= 12c

maybe it's easy to you but it's hard.
can you show me step by step how you got the answer?

2007-10-14 10:47:37 · 7 answers · asked by Alfreda W 1

A Harris Interactive survey for InterContinental Hotels & Resorts asked respondents, “When traveling internationally, do you generally venture out on your own to experience culture, or stick with your tour group and itineraries?” The survey found that 23% of the respondents stick with their tour group.

In a sample of six international travelers, what is the probability that at least two will stick with their group?!?

How is this solved?

2007-10-14 10:43:27 · 2 answers · asked by Anonymous

(-4*a)/(y) + (2*a) / (4*a) + (4*a)/(y)? Need help....

2007-10-14 10:40:32 · 4 answers · asked by luishernandez66 1

Two planes started at the same time from the same airport and flew in opposite directions. One flew 60 miles per hour faster than the other. In 5 hours, they were 5,300 miles apart. Find the rate of each plane. Can somebody please explain to me how to solve these kind of questions?

2007-10-14 10:34:51 · 5 answers · asked by vp_nyc 2

2007-10-14 10:34:32 · 5 answers · asked by Anonymous

2007-10-14 10:19:53 · 2 answers · asked by Anonymous

i have a question on my math homework. how do you use relatively prime? or what is it and give me examples

2007-10-14 10:15:22 · 2 answers · asked by Kat 2

A Ballons rises at the rate of 8 ft/sec from a point on the ground 60 ft from the observer. Find the rate of change of the angle of elevation when the balloon is 25 ft above the ground.

Let a= 60 ft
Let b= 25 ft
Let db/dt= 8
Find d(theta)/dt

Formula relating angle of elevation to height of balloon and distance from observer.

tan(theta)=b/60

Differentiate implicitly, and solve for d(theta)/dt:

d(theta)/dt = (cos^2(theta)/60) * (db/dt)

Need to find what theta is when balloon is 25 ft above ground:
USE:

arctan(5/12)= theta

Now plug theta and db/dt into the equation and I got:

d(theta)/dt= 1152/169 radians/second

Something doesn't seem right, I either missed up on a step, am paranoid, or both.

2007-10-14 10:15:02 · 2 answers · asked by Dr. AjC ♍ 3

For my work when i found the derivative for the first time i got 2xcosx - xsquared(sinx)+4 cos x... is this correct so far
^ above where the arrow is pointing and at xsquared(sin x) do i use the product rule to find the second derivative? because i did n i got this answer 2cosx-2(2xsinx)-xsquared(cosx)-4sinx but i donno if this is right? can someone please help me?

thank you i really appreciate it!!

2007-10-14 10:12:16 · 3 answers · asked by Anonymous

2007-10-14 10:10:07 · 5 answers · asked by Al 2

use the properties of addition and multiplication to complete the statement

2007-10-14 10:02:42 · 5 answers · asked by Sara R 1

A stone is dropped into a lake, creating a ripple that travels outward at a speed of 60cm/s. find the rate at which the area within the circle is increasing after a. 1s b. 3s, and c. 5s.

2007-10-14 09:56:20 · 1 answers · asked by smarin1987 2

Please give me some websites too, that answer these questions.

2007-10-14 09:44:51 · 2 answers · asked by gemma 3

For any integer k>1, k! is the product of every integer from 1 to k. Thus, 3! = 1x2x3. Write the only integer n>32 that satisfies:
(n-23)!(23)! = (n-32)!(32)!

2007-10-14 09:42:41 · 2 answers · asked by Anonymous

for example, how would you do this problem?

Consider the function ln( 1 + 6 x).
Write a partial sum for the power series which represents this function consisting of the first 5 nonzero terms. Also indicate the radius of convergence.

2007-10-14 09:38:22 · 1 answers · asked by Anonymous

those are square root signs over the a, b, and c.

2007-10-14 09:36:28 · 3 answers · asked by Anonymous

50squared+951951951=?

2007-10-14 09:30:30 · 3 answers · asked by Anonymous

Why

2007-10-14 09:29:59 · 5 answers · asked by blueanswers 2

f(x) = sqrt(3+x)
a = 6
delta(x) = 1

I get delta(f) = 1/2 * 9^(-1/2), but I don't understand how you can get the error since the formula says:
Error: abs( delta(f) - f '(a)*delta(x) )

I keep getting 0 as the error, but I know it isn't correct.

2007-10-14 09:25:10 · 3 answers · asked by Steve waka 1

(sqrt(20x^2 + 5)) / (5x^2)

How do you solve this, i know you use quotient rule, and chain rule, but when i get to (20x^2 + 5)^1/2 x (5x^2)

Please help.

2007-10-14 09:15:30 · 2 answers · asked by Anonymous

Is it impossible to convert ml into grams because grams is a unit for weight and ml is a unit for volume?

For example; for Glucose i only know the molecular weight which is 180g/mol-1 and the volume of solution in which the glucose is in 20ml. I also know in this 20ml solution there is 2.0% of glucose present.

Can i use this information to calculate the weight in grams of glucose or is that impossible??

2007-10-14 09:11:00 · 5 answers · asked by Varisha 6