03/11/15

chemistry question
formula for lead (ii) phosphate 
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03/10/15

Find the volume of the solid
Using disks or washers, find the volume of the solid obtained by rotating the region bounded by the curves y=x2 and y=4 about the line y=4.    what is the volume?
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03/09/15

If f(x)= ln(x) + arctan(x) ; find (f^-1)'(pi/4)
Please help me with all the steps! 
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03/08/15

find the volume of the solid
Using disks or washers, find the volume of the solid obtained by rotating the region bounded by the curves y=x, y=0, x=2, and x=4 about the line x=1. 
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03/06/15

Consider the function f(t) = 6sqrt(x) + 9
Consider the function f(t) = 6sqrt(x) + 9 on the inverval [1,10].  Find the average or mean slope of the function on this interval    By the Mean Value Theorem we know there exists a c in the... more
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03/04/15

How many moles of CaSO4 are in 5.22 × 1024 formula units?
helppppppppppppppppp
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03/04/15

Write F U H and F n H using interval notation. If the set is empty, write Ø
The sets F and H are defined as follows. F={z lz ≤1} H={z lz >7}.Write F U H and F ∩ H using interval notation. If the set is empty, write ∅
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03/03/15

Find the average value of the function
find the average value of the function f(t)=-5te-t^2 on the interval [0,5]
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03/02/15

an ice cream package is cone shaped it has a radius of 5.5 cm and a diagonal of 17cm find the height of the cone first then the volume of the icecream cone
I need to know what the answer is because its really confusing, Thank you so much.
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03/02/15

Please help me solve this and show me how you got the answer. Thank you!
A student prepared aspirin using 2.019 g of salicylic acid and 5.2 ml of acetic anhydride (d=1.08g/ml) 1. Which reactant is limiting? salicylic acid or acetic anhydride 2. What is the theoretical... more
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02/28/15

im stuck on this one can someone please help
Find the volume of water which must be mixed with 20m3 of milk of specific gravity 1.032 in order to give a mixture of specific gravity 1.02.
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02/27/15

integration of cos^2x/(1+tanx)
My question is 12 standard calculas problem basically it is indefinite calculas . Integration of cos square x devised by one plus tan x
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02/26/15

The volume of a certain solid is 1200 cu. in. and its surface is 800 sq. in. what will be the surface of a similar solid whose volume is 2400 cu. in.?
the answer is 1269.9 sq. in. can you give me a solution for these ? :)
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02/26/15

College Algebra word problem
Write the following number in base six and in base twelve.   Note: Do not use lower-case letters when entering a base twelve number.   123 = (_________)six = (__________)twelve
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02/25/15

how do you find the exact value of sin 3pi/8 using the half-angle formula
 I really don't understand what to do.
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02/25/15

What is the force???
What is the unbalanced force acting on a moving car with a constant velocity of 21 m/s (47 mi/h)? ___ N
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02/23/15

How do you find the direction of angular acceleration?
My teacher gave us this problem and i am unsure on how to solve for the direction of the angular acceleration.    Mr. Foster is riding a bicycle eastward on a bicycle when he reaches a large hill... more
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02/22/15

86) square based prism
1) a square based prism must have a volume of 8000 cm cube. what dimensions should be used to maximize the surface area? explain please i dont understand how to do this question below. explain. 2)... more
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02/21/15

linear approximation and derivative help
A right circular cone of height h and base radius r has total surface area S consisting of its base area plus its side area, leading to the formula: S= pi*r^2+pi*r*sqrt(r^2+h^2)Suppose you start... more
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02/19/15

Comination Problem
  7 freshmen, 7 sophomores, 7 juniors, and 7 seniors are eligible to be on a committee.   In how many ways can a dance committee of 17 students be chosen if it is to consist of at least 1... more
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02/17/15

how many ways can 8 students line up in a straight line with sally ahead of peter in the queue
i have no idea what kind of topic this is and i don't know how to work it out.
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02/15/15

Evaluate the limits
Evaluate lim ((x^(1/n)-a^(1/n))/(x-a)) as x->a and lim ((x^n-a^n)/(x-a)) as x->a?   I didnt learn l'hopital's rule  
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02/08/15

3cm x 3cm x 3cm cube is made of 27 small cubes, each measuring 1cm x 1cm x 1cm. Exterior is painted. How many of the small cubes have exactly one face painted?
part b) if a 4 by 4 by 4 cube is assembled the same way. how many small cubes will have exactly one face painted?  c) 5 x 5 x 5??? 6 x 6 x 6???
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02/08/15

What is the orthocenter of a triangle (-2,1) (3,4) (3,-4)?
what would the answer be?
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02/06/15

What is the radius of curvature of the mirror
An incandescent lamp is located 2.4 m from a wall. It is desired to throw on the wall an image magnified three times the diameter, using a concave mirror. What must be the radius of curvature of... more
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