William W.

06/10/22

chemistry 121 homework about density and diameter

An atom has a diameter of 2.50 Å and the nucleus of that atom has a diameter of 9.50×10−5 Å . Determine the fraction of the volume of the atom that is taken up by the nucleus. Assume the atom... more

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Statistics

06/08/22

a mean of 57 and a standard deviation of 3. Using the 68-95-99.7 rule, what is the approximate percentage of lightbulb replacement requests numbering between 57 and 66?

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Linear Algebra

06/07/22

Creating Expression

A certain bacteria population is known to triple every hour. Suppose that there are initially 150 bacteria. What is the size of the population after t hours?

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Chemistry

06/07/22

You the combustion of propane is c3h8(g)+5o2(g)→3co2(g)+4h2o(g).27.3 g c3h8 combust. how many grams of water do you expect to produce

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Chemistry

06/07/22

Chemistry help for finals

the combustion of propane is c3h8(g)+5o2(g)→3co2(g)+4h2o(g) how many grams of water do you expect to produce

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Calculate Probability

06/07/22

Probability you will get a traffic light Red or Green

So let's say regardless of the time of day, or day of the week you pass thru a prticular intersection 750 times in a given year. If you record the number of times you got the light either red or... more

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Calculus

06/06/22

Use the Mean Value Theorem to estimate f(6)-f(3)

suppose f(x) is continuous on [3,6] and -5≤f'(x)≤4 for all x in (3,6)_____≤f(6)-f(3)≤_____

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Algebra 1

06/06/22

Algebra 1, Please Help! Describing Situations

The height, h, of a stomp rocket (propelled by a short blast of air) above the ground after t seconds is given by the equation h(t) = 5 + 100t − 16t2.Here is a graph that... more

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Math Trigonometry

06/06/22

The following parametric equations model the flight of the baseball

A baseball is hit from a height of 3 feet at a 60° angle, with initial velocity 64 feet per second. The following parametric equations model the flight of the baseball:𝑥 = 32t𝑦 = −16𝑡 2 + 32√3 𝑡 +... more

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Precalculus Pre Calculus Pre Calculus

06/06/22

Find all real zeros of the polynomial P(x)=x4−x3−19x2−x−20

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Precalculus

06/06/22

Find all real zeros of the function y=x3−6x2−25x+150

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Math Algebra 1 Algebra

06/05/22

Square Function

Let F be a quadratic function given by F(x)=ax2+bx-2. If x=3 is the axis of symmetry of the graph of F and F(3)=>0, then it is fulfilled with certainty:Which is the correct answer.A) a>0,... more

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Prealgebra

06/04/22

math homework help

Which expressions represent the sum of exactly two terms?Choose 2 answers: (Choice A,) A xy (Choice B) B m^4+6n (Choice C) C 3+7s+t (Choice D, D a+c

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Algebra 1

06/02/22

if f(X) = 3^x+10 and g(X) = 4x-2 , find (f - g)(X)

algebra is way too confusing for me

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Algebra 1

06/02/22

if f(x)=3x-2 and g(x)=2x+1, find (f-g)(x)

i'm having difficulty with my algebra can someone please help me?

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Algebra 2

06/02/22

Let f(x) = x2 − 16. Find f−1(x)

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Geometry

06/02/22

Geometric sequence

which of these sequences is geometric -18,-12,-6,01/2,1/4,1/4,1/53,-1,-5,-93/2,-1/2,1/6,-1/184,9,16,25

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Geometry

06/02/22

Geometric sequence

which of these sequences is geometric -18,-12,-6,0

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Algebra 1

06/02/22

Algebra 1, Please Help! Graphing from Factored Form

1 A function f is given by f(x)=(x−4)(x+2)Answer the following and explain your technique/reasoning:1. What are the x-intercepts of the graph?2. What is the ordered pair of the vertex of the... more

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