The half-life of Palladium-100 is 4 days.

The half-life of Palladium-100 is 4 days. After 16 days a sample of Palladium-100 has been reduced to a mass of 1 mg.What was the initial mass (in mg) of the sample?   What is the mass 5 weeks... more

Chemistry problem

What is the greatest amount of magnesium oxide in moles that can be made with 6.3 mol Mg and 6.9 mol ? Which reactant is O2 limiting ? How many moles of the excess reactant will be left after the... more

find the quotient

Find the quotient and remainder forx^3+8x^2+12x−13/x+4The quotient is   The remainder is 

The expression can be written

The expression log (x^13 y^8 / z^3) A log(x)+B log(y)+C log(z)A=B=C=

precalculus hw due in 1 hour pleasehelp

The fox population in a certain region has an annual growth rate of 6 percent per year. It is estimated that the population in the year 2000 was 24000.(a) Find a function that models the... more

Diving Word Problem

Problem: Lauren dove into a swimming pool from a 15-foot-high diving board with an initial upward velocity of 8 feet per second. Find the time t in seconds it took Lauren to enter the water. Use... more


math inequality algebra 1

in order to prepar for your graduation party, you must go to the grocery store to buy hamburgers and chicken. Hamburgers cost $2 per pound and chicken costs $3 per pound. You can spend no more than... more

Use the general slicing method to find the volume of the following solid

The solid with a circular base of radius 5 whose cross sections perpendicular to the base and parallel to the x axis are equilateral triangles

Intro to probability and statistics.(if you solve you a genius)

Question 2: We have a collection of steel circles. The radius of each circle is a realization of a random variable R uniformly distributed in [1, 5]. a) Determine the expected value of the volume... more

Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line

y = √(25-x²) y = 0x = 2x = 4about the x axis

Calculate the amplitude of the periodic function y=7cos(3x) .

A) 3B) 7C) 14D) -3

Find the period of the function y=2sin(4pix+1) .

A) 1/2piB) 1/2C) 2D) 2pi

What is the cosine of an angle,θ , in standard position if its terminal ray intersects the unit circle at (0.64, -0.766? In which quadrant does this point lie?

A) cos (θ)= 0.64, quadrant 4B) cos (θ)= -0.77, quadrant 2 C) cos (θ)= -0.77, quadrant 4D) cos (θ)= 0.64, quadrant 2

Chemistry Question 16

The pressure of a 0.5388 mol sample of C2H6 in a 22.773 L container is measured to be 4.9487 atm. What is the temperature of this gas in kelvins? Remember:PV = nRTR= 0.0821 atm•L/mol•K

Chemistry Question 15

Using the Ideal Gas Law and the given measurements, solve for the unknown variable.How many moles of Rn are in a 63.353 L container at 5.8102 atm and 527 K? Remember:PV = nRTR= 0.0821 atm•L/mol•K

For the following exercise, j ∥ k and △ABC  is given. Given:m∠3 = 52° m∠2 = 77° Find:m∠1, m∠4, and m∠5 in degrees

For the following exercise, j ∥ k and △ABC is given. ( I JUST NEED THE ANSWER) ITS THE LAST PROBLEM Given:m∠3 = 52° m∠2 = 77° Find:m∠1, m∠4, and m∠5 in degreesThere are two lines, six labeled... more

what is the value of x?

Thomas wants to invite Madeline to a party. He has an 80% chance of bumping into her at school. Otherwise, he’ll call her on the phone. If he talks to her at school, he’s 90% likely to ask her to a... more

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