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maath

Questions (55)

What is the reciprocal modulo 28 of 5?
1. 1 answer
2. 247 views
When a ball is slowly rolled across a horizontal plane, why is the velocity constant? Is it because the rate of position
1. 2 answers
2. 270 views
What is an example of a convergent alternating series where the conditions of the alternating series test do not hold?
1. 1 answer
2. 608 views
What's an example of a short problem where either the first or second derivative test can be applied but the first derivative
1. 2 answers
2. 392 views
If xy+x+y=1, find dy/dx.
1. 1 answer
2. 371 views
what are several ways to parametrize the parabola y=x^2?? or just how do you parametrize a parabola in general?
1. 1 answer
2. 369 views
Find the Taylor series centered at x = -1 for the functionf(x) = x(e^x)
1. 1 answer
2. 1,613 views
One more question...If you have f(x) = xsinx and the question is asking for the fourth degree Taylor polynomial about x=0, can
1. 1 answer
2. 2,635 views
Does the series 1/n converge to zero? I know that it is a harmonic series, but shouldn't it converge because as x gets really
1. 4 answers
2. 493 views
Expand 4/(x^2+4) as a power series centered at 0.
1. 3 answers
2. 405 views
In the recent century, the Belgium population grows following the logistic equation. Predict its population in 2020 given the
1. 1 answer
2. 430 views
Solve the following differential equation algebraicallydy/dx = xy^2 + 4x y(0) = 0 I reached the point dy/(y^2+4) = xdx but I
1. 4 answers
2. 1,323 views
Humans have yet another antigen system on their red blood cells. The MN blood group refers to a different antigen controlled by
1. 0 answers
2. 528 views
how do you take the antiderivative of √(1+4x^3)
1. 1 answer
2. 298 views
Find the area of the region bounded by the curve y=x^2*e^x and the x-axis, 0≤x≤1
1. 2 answers
2. 414 views
Find the length of the curvey = x^2 - (1/8)lnx, 1 ≤ x ≤ e
1. 3 answers
2. 777 views
what happens when you change an OH to an H on a nucleotide?
1. 0 answers
2. 386 views
If F'(x)=√1+x^3 and F(1)=5, then what is F(3)?(1+x^3) is all under the square root
1. 1 answer
2. 358 views
In the process of alcohol fermentation, 2 NADH molecules are converted to 2 NAH+ as energy from the NADH is used to drive the
1. 0 answers
2. 517 views
Suppose f(1)=1 and f'(x)≤2 for x≥0. Apply the MVT to the interval [1,x] to prove that f(x)≤2x-1 for all x>1. Verify all
1. 3 answers
2. 370 views
what is the absolute value of infinity? is it just zero?
1. 1 answer
2. 1,340 views
If three dice are tossed, their sum could be 7. What is the probability of this?I'm guessing it's something to do with
1. 1 answer
2. 929 views
What is the probability that this year's graduation will fall on the birthday of exactly one of the 336 Seniors? What is the
1. 1 answer
2. 1,227 views
Why do some compounds and elements exist as a liquid at room temperature, while others are solids and gases? What forces are
1. 5 answers
2. 1,483 views
why do molecules and ions with the same number of atoms and valence electrons have the same or similar molecular shape?
1. 1 answer
2. 480 views
The focal points of a hyperbola are (0,6) and (0,-6), and the point (5,6) is on one of its branches. Find coordinates for the
1. 1 answer
2. 1,178 views
Give the maximum number of electrons in an atom that can have these quantum numbers.1. n = 3, ℓ = 2, mℓ = -1, ms = 1/2 2. n
1. 1 answer
2. 3,060 views
The enthalpy of fusion of ice is 6.020 kJ/mol. The heat capacity of liquid water is 75.4 J/mol degrees Celsius. What is the
1. 2 answers
2. 5,207 views
A 152g sample of ice at -37 degrees Celsius is heated until it turns into liquid water at 0 degrees Celsius. Find the change in
1. 3 answers
2. 2,166 views
A 5.00 g sample of aluminum pellets (specific heat capacity = 0.89 J/°C·g) and a 10.00 g sample of iron pellets (specific heat
1. 2 answers
2. 2,187 views
Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 40. cm^3. If the combustion of
1. 0 answers
2. 754 views
Calculate the average kinetic energy of the N2 molecules in a sample of N2 gas at 266 K and at 532 K.I got 32.7 and 65.5 but
1. 1 answer
2. 728 views
What is the deeper meaning of the poem, "A Lover" by Amy Lowell?This is her poem: "If I could catch the green lantern of the
1. 1 answer
2. 1,014 views
The height of an object moving up and down is described by y=72+40cos18t (in degree mode). To at least three decimal places,
1. 1 answer
2. 2,040 views
Find the focus and directrix for the parabola y=ax^2. What special meaning does the expression 1/(4a) have?
1. 1 answer
2. 1,087 views
There are many examples of graphs that have period 60 and whose y-values vary between -8 and 8. First, find a formula for such a
1. 2 answers
2. 1,627 views
Thallium(I) hydroxide is a strong base used in the synthesis of some organic compounds. Calculate the pH of a solution
1. 1 answer
2. 815 views
Let F=(0,0) be the focus and the line y=-6 be the directrix. Plot several points P that are half as far from the focus as they
1. 1 answer
2. 929 views
What is a quasi-martial law? I looked this up on google but there's no direct answer to it.
1. 4 answers
2. 2,690 views
Terephthalic acid is an important chemical used in the manufacture of polyesters and plasticizers. It contains only C, H, and O.
1. 1 answer
2. 3,392 views
What is the largest number of ions in any of your formulas? What is the total positive charge and the total negative charge in
1. 1 answer
2. 1,567 views
Find p(p^-1(x)) when p(x)=x^2-4I tried solving this and I got x^4-x+20 but that has no solution so I'm a little confused.
1. 2 answers
2. 377 views
A chemist in a galaxy far, far away performed the Millikan oil drop experiment and got the following results for the charges on
1. 3 answers
2. 1,999 views
Several compounds containing only sulfur (S) and fluorine (F) are known. Three of them have the following compositions.i. 1.188
1. 1 answer
2. 689 views
You have a chemical sealed in a glass container filled with air. The glass container has a mass of 200.0 grams and the chemical
1. 2 answers
2. 1,040 views
How do you write the chemical formula for ammonium acetate and ammonium hydrogen sulfate?
1. 3 answers
2. 762 views
Explain the notation M^-1 used for the inverse of a square matrix M.I thought M^-1 would be a normal inverse matrix except the
1. 2 answers
2. 786 views
Let F1 = (0,2), F2 = (0,-2), and P = (x,y). Use the distance formula to convert the equation PF1 + PF2 = 6 into Cartesian form.
1. 4 answers
2. 3,158 views
How do you find the value of m in the equation y=k+asin(mx)?
1. 5 answers
2. 1,694 views
Show that the surface area of a sphere is two thirds of the total surface area of any cylinder circumscribed around the sphere
1. 1 answer
2. 1,254 views
The volume enclosed by a sphere of radius r is (4/3)πr^3. The surface area of the same sphere is 4πr^2. You may already have
1. 1 answer
2. 1,496 views
Is tan(90-theta) the same as tan(theta)???
1. 5 answers
2. 406 views
Show that any dilation transforms any figure into a similar figure.
1. 1 answer
2. 692 views
Show that any dilation transforms any figure into a similar figure.
1. 0 answers
2. 483 views
Find a vector of length 3 that is perpendicular to [2,1,-2]
1. 1 answer
2. 2,283 views

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