Friday
July 25, 2014

Posts by cait


Total # Posts: 28

Trigonometry
Plz help

Trigonometry
n-1/n divided by 1+1/n

Math, Please help!
I'm having a hard time in math, and every time I start my test my eyes glaze over. Can anyone please help me out? (9m+6)+(-5m-6) (3r^2+7r+1)+(4r^2-8r-2) (6h+1)-(9h+4) (-7w^2-2w-1)-(-5w^2 +3w-2)

Math, Please help!
I'm having a hard time in math, and every time I start my test my eyes glaze over. Can anyone please help me out? (9m+6)+(-5m-6) (3r^2+7r+1)+(4r^2-8r-2) (6h+1)-(9h+4) (-7w^2-2w-1)-(-5w^2 +3w-2)

History
is it A

Calc
Find the volume formed by rotating the region enclosed by: x = 8 y and y3 = x with y ≥ 0 about the y-axis

Calc2
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y = x2, y = 1; about y = 6

DUE AT MIDNIGHT PLEASE HELP- Calculus
A trough is 5 meters long, 1 meters wide, and 4 meters deep. The vertical cross-section of the trough parallel to an end is shaped like an isoceles triangle (with height 4 meters, and base, on top, of length 1 meters). The trough is full of water (density 1000 kg/m3 ). Find th...

math
no other criteria was given

math
a 2 digit number, divisable by 6, the 10s unit is 1/2 of the digit unit

physics
car comes to a stop over distance of 30.0m after the driver applies brakes. If the car decelerates @ contant rate of 3.50m/s2, what was the car's origianl sped?

Chemistry
Determine the pH of 263 ml of solution which has [NH 4I] = 0.300 M. Kb = 1.74 × 10-5 for NH3(aq)

Chemistry
I managed to get it :) though for others who might be looking to solve this for their practice questions Convert Kb to Ka Ka = kw/Kb then just use an ice table with Ka=x^2/ 0.300M-x (x is small) and just -log[H3O+)

Chemistry
Determine the pH of 263 ml of solution which has [NH 4I] = 0.300 M. Kb = 1.74 × 10-5 for NH3(aq)

algebra
dimensions: 320x640 max. area 204800

8th grade
very fast

math
a local gas station uses the formula c= 0.635L+ 6.25 to charge customers who want to buy gasoline and a car wash what is the total cost if you buy 20L of gasoline? please help!

9th grade
how much heat is needed to change 20g of ice at negative 10 degrees c to water vapor at 200 degrees c

Physics
Ok... but I still don't get it... Is there a formula type thing that could help me?

Physics
Yes - if it is the same person answering it - it is me again! My question has STILL not been answered... How would I solve for upwards acceleration with this kind of image, assuming mass and force are given.

Physics
How would I go about calculating the acceleration of a mass being pulled up an inclined plane at an angle. Given - mass, and presumably angles So the object is being pulled up an angle at another angle.

Physics
But what about the second angle? There is another one besides theta that I don't know what to do about - but that explanation just helped alot with all the other problems!

Physics
Compute the net force along the direction of the plane, making sure to subtract friction (if any) and the component of weight along the plane (W sin A). -That is the part that I don't get how to do...

Physics
How would I go about calculating the acceleration of a mass being pulled up an inclined plane at an angle. Given - mass, and presumably angles

Sequences and Series
PreCal. What is the difference between the equations (n(n+1))/2, and n/2(ti+tn)?? Under what conditions would you use them? Thanks much!!!

proof by mathematical induction
subject is PreCalulus. 2^(k+3) = and < (k+3)! i know how to do proving using mathematical induction when its just an equal sign, but I dont understand what to do when its an inequality. thank you!!! Here is what I would do Step 1: check if it is true for k=1 that is: let k=...

Math
What is quantity and how do you use it. A quantity is how much you have of a particular quality or substance. You can use it to compare to other quantities to see if they are more or less. Depending on what you desire — more or less — you might adjust the situation...

FACTORING HELP ASAP
i dont know how this works.. but im helping my friend with some factoring and i have a few questions

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