02/22/21

A particle moves along a straight line with equation of motion s = f(t), where s is measured in meters and t in seconds. Find the velocity and the speed when t = 3.
f(t) = 18 + 20/t-1
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02/21/21

Sketch a graph of f(x) = -3 - e^(x+5) Find the y intercept and the horizontal asymptote of the graph. State whether the function is increasing or decreasing.
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02/18/21

algebra 1 need help
Multiplying Polynomials 1 Multiply (w+9)(w-2)
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02/17/21

i need help with Polynomial Add and Subtract questions
i need to add these (6x2+2x)+(5x−3x2+4) but i need help doing it.
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02/17/21

How fast (in billions of dollars per year) were sales increasing at the beginning of 1998?
The annual sales of digital signal processors (DSPs) in billions of dollars is approximated byS(t) = 0.14t2 + 0.68t + 3.1    (0 ≤ t ≤ 6)where t is measured in years, with t = 0 corresponding to the... more
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02/17/21

When a skater pulls her arms in, it reduces her moment of inertia from 2.12 kg•m2 to 0.699 kg•m2. If she was initially spinning 3.25 rad/s, what is her final angular velocity?

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02/17/21

Physics, Vectors
Given the following vectors:  = 7.2î + 4.0ĵ,  = 5.0î + 4.3ĵ, and  = 6.4î + 5.9ĵ(a) Find the vector , in unit vector notation, such that  + 1 - 2 + 3 = 0.  =   (b) Express your answer in part (a) in... more
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02/12/21

PRE CALC AB - A decaying radioactive ore has a half life of 1710 years.
A decaying radioactive ore has a half life of 1710 years.a) Write the exponential decay function for a 27 gram sample. b) Find the amount remaining in 3000 years.
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02/09/21

A balloon in the shape of a perfect sphere is slowly expanding. At time  hours the radius is 32 feet and is increasing at an instantaneous rate of 3 .

A balloon in the shape of a perfect sphere is slowly expanding. At time hours the radius is 32 feet and is increasing at an instantaneous rate of 3. Use the chain rule for the sequence of... more
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02/09/21

Find the slope of the graph of the function at the given point. Use the derivative feature of a graphing utility to confirm your results.

Function: y=(4x+2)^2 Point: (0,4)
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02/09/21

Graph the marginal profit function for the profit function P(x) = 11x − 0.4x2 − 10, where P(x) is in hundreds of dollars and x is hundreds of units.
Graph the marginal profit function for the profit function P(x) = 11x − 0.4x2 − 10, where P(x)  is in hundreds of dollars and x is hundreds of units.(b) What level of production and sales (in... more
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02/09/21

High School Algebra 2
The multiplicative inverse of a complex number z is 1/z where z≠0. Find the multiplicative​ inverse, or​ reciprocal, of the complex number 5−11i. Then use complex conjugates to simplify. Check your... more
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02/09/21

Given cot A= 8/5 and that angle A is in Quadrant I, find the exact value of cos A in simplest radical form using a rational denominator.
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02/09/21

y ''−4y'+3y = 6t−8, y(0) = 0, y'(0) = 0
Solve the initial value problem below usingthe Laplace transformPlease help
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02/08/21

The average 169 pound person burns 7.9 calories per minute while backpacking. How many calories would a person of this weight burn while backpacking for 75 minutes?
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02/08/21

what is the answer for this question?
In a bag of mixed beans, you have 160 pinto beans and 40 kidney beans. Pinto beans have a mass of 1.45 grams; kidney beans have a mass of 1.68 grams.  a. what is the percent abundance of pinto... more
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02/08/21

Calculus integral related questions
Let f be the function defined by f(x) = −ln(x) for 0 < x ≤ 1. R is the region between the graph of f and the x-axis. This question does not permit the use of a calculator. Determine whether... more
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02/08/21

Homework Help Please
The height of a triangle is increasing at a rate of  centimeters/minute while the area of the triangle is increasing at a rate of  square centimeters per minute. At what rate is the base of the... more
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02/04/21

How do I simplify If e^2y−e^(y2−y)=x4−x2 using implicit differentiation?
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01/31/21

Atomic emission, absorption of light and energy
Consider the following energy levels of an atom:E4 -1.0 x 10 E-19 JE3 -5.0 x 10 E-19 JE2 -10 x 10 E-19 JE1 -15 x 10 E-19 JWhat is the wavelength of the photon neede toecite an electron from E1 to... more
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01/31/21

Graphing help plz!
For the exponential function f, find f-1 analytically and graph both f and f-1.f(x)=5x-1
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01/30/21

What is the equation of a line with a slope of 1/2 that contains the point (6,-3)
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04/15/20

Suppose that f^(4) is continuous and f′(c) =f′′(c) =f′′′(c) = 0, but f^(4) 6= 0. Does f(x) have a local maximum, minimum or a point of inflection at c? Justify your answer.
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07/29/19

Programming style in Perl?
I work in Java so basically I use OOP paradigm during coding.I am about to start working in Perl and I was wondering what is the paradigm that Perl developers follow.In wiki it mentions that it... more
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06/15/19

A radioactive substance is decaying exponentially. If there are initially 15 grams of the substance and after 3 hours there are 5 grams, what is the approximate half life of the substance, in hours?
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