01/29/21

The count in a bacteria culture was 400 after 10 minutes and 1100 after 40 minutes. Assuming the count grows exponentially,
The count in a bacteria culture was 400 after 10 minutes and 1100 after 40 minutes. Assuming the count grows exponentially,What was the initial size of the culture?    Find the doubling... more
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01/29/21

The set A = {(x,y,z)|x,y,z are integers
The set A = {(x,y,z)|x,y,z are integers, 1≤x≤y≤z≤4} has n elements, then n =a.10b.16c.20d.27e.64
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01/29/21

Derivative and chain rule questions

1) If g(x)=2ln(x+1) and f is a differentiable function of x what is equivalent to the derivative of f(g(x)) with respect to x?2) For which of the following functions is the chain rule an... more
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01/29/21

I need help with integrals
Let f be the function given by f(x)=sin^2(x/4)e^(−x2). It is known that (top value= π/2)∫(bottom value=0) f(x) dx= 0.0223. If a midpoint Riemann sum with two intervals of equal length is used to... more
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01/28/21

Convert (5, π/3) from (r, θ) to different polar forms.
(r, -θ) = (-r, θ) = (-r, -θ) =
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01/28/21

Find the angular speed of the wheels in rad/min:

A truck with 26-in.-diameter wheels is traveling at 60 mi/h.Find the angular speed of the wheels in rad/min: 
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01/28/21

Which trig functions do you have to add 2πn in order to include all possible solutions?
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01/28/21

Find the unit vector in the same direction as the vector: -3i + 5j.
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01/28/21

Use synthetic division to evaluate the function for the indicated value of x.
f(x)=3x^4-11x^3+8x+2;x=2
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01/26/21

PLS PLS HELP ITS SOO URGENT
So we have this table to as an example to help us throughout the questions Student Pair Function one Function 2 Composition 1 g(x)=1/x f(x)=(2x^2)-8 g(f(x)) 2 k(x)=sqrt(x) h(x)=... more
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01/26/21

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the zeros 4 and 3−i.
Please help me. Also please explain.
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01/26/21

Degree 5; roots of multiplicity 2 at x = 3 and x = 1, and a root of multiplicity 1 at x = −3; y-intercept at (0, 7).
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01/25/21

Calculate the average rate of change of the given function f over the intervals [a, a + h] where h = 1, 0.1, 0.01, 0.001, and 0.0001
f(x)= x^2/ 4; a=1 h=1 ___h = 0.1. ___h = 0.01. ___h = 0.001. ___h = 0.0001 ___
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01/25/21

Quadratic equations

A square is altered so that one domension is increased by 5 units, while the other dimension is decreased by 3 units. The area of the resulting rectangle os 48 sq units. Find the area of the... more
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01/25/21

Read the Poem 'The Second Coming
Read the Poem 'The Second Coming' by W. B Yeats thoroughly and answer the questions that follow:'The Second Coming'Turning and turning in the widening gyre   The falcon cannot hear the... more
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01/25/21

Math 127 trigonometry

To approximate the speed of a stream's current, a paddle wheel with a radius of 6 feet is lowered into the water. If the stream causes the wheel to rotate at 11 rpm, what is the speed of stream in... more
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01/25/21

If a>0 and b<0, then |a-b|=a-b
I need help with this proof. I don't know what to do
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01/25/21

Sheldon notices the Ferris Wheel radius is 40 feet and the center of the wheel is 50 feet high. Amy times the ride and finds it takes 45 seconds to complete one turn around the wheel.
At what speed is the platform moving. (in feet per second)? Through what angle (in degrees) does the Ferris wheel turn each second? What is the height of the platform when it is in each of... more
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01/25/21

Math 127 Trigonometry

A wheel rotates at 2880 degrees  per second. What is the angular speed (in radians per minute)?Write your answer in terms of pi. Type pi for ππ.ω =    radians/minWhat is the linear speed (in... more
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01/24/21

Write and then solve for y = f(x) the differential equation for the statement: "The rate of change of y with respect to x is inversely proportional to y4
Write and then solve for y = f(x) the differential equation for the statement: "The rate of change of y with respect to x is inversely proportional to y4."
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01/24/21

Find the area of the region bounded by the curves y = sin(x), y = cos(x), x = 0, and x = 𝜋/2.
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01/24/21

FInding The Equation of a Rational Function

A zero at x = 3A hole when x = 5A vertical asymptote at x = -1A horizontal asymptote at y = 3A y-intercept at y = -9What is the equation of the rational fn?
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01/24/21

if z = 1-i, where i = √-1, then 1+z
if z = 1-i, where i = √-1, then 1+z+z2+...+z9 = ....
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01/24/21

Delta math help

Given f(x) = x^3 - 4x + k and the remainder when f(x) is divided by x - 5 is 91 then what is the value of k ?
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01/24/21

Use the fundamental identities to simplify the expression. Use the table feature of a graphing utility to check your result numerically.
9 / cot2(x)+1Answer: ____
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