05/11/21

What harmonic is it vibrating at?
A guitar string has a length of 0.5 m. If the string is vibrating with a wavelength of 0.17 m, what harmonic is it vibrating at? a 4th harmonic b 6th harmonic c 2nd harmonic d 1st harmonic
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05/11/21

Why did God make trigonometry? This makes no sense.

Algebraically solve the equation 2cos2x + 5cosx + 2 = 0 over the domain 0≤x≥2n.... solutions must be in exact values whatever that means.
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05/11/21

How does an inverse function work here? What's an isolated y-variable?
I'm given the quadratic function f(x) = x^2 - 2. With this function, one must find the coordinates of the vertex of x = f(y) and then determine the entire equation of the inverse relation with an... more
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05/11/21

What is meant by Decay Rate?
So I have calculated the decay rate of iodine-131 for my report using the formula; A(t) = etkThe half-life is around 8 days so this is how I calculated it; A(8) = e8k .5 = e8k Natural... more
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05/11/21

Can magnetic forces be faster than the speed of light?””
Theoretically, if there was a magnet that was strong enough, would it be able to pull an object faster than the speed of light?
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05/10/21

A ball is launched into air. If the ball is launched with an initial height of 9 feet, what are the parametric equations for the ball's motion?
the ball is launched with an initial velocity of 89 feet per second and an angle of 61∘ to the horizontalselect the correct answer... more
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05/10/21

Please Help with explanation!!!, Question; Jeffrey works as a DJ at a local radio station.
1.Jeffrey works as a DJ at a local radio station. On occasion, he chooses some of the songs he will play based on the phone-in requests received by the switchboard the previous day. Jeffrey’s list... more
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05/10/21

Need help to estimate the slope of the tangent line at P(3,2.8)
Below is the whole question. All of the data in "a.)" is correct. I need help finding the slope of the tangent line at P (3, 2.8). This is part "b" in bold below. The experimental data in the table... more
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05/09/21

Suppose that 5 J of work is needed to stretch a spring from its natural length of 28 cm to a length of 39 cm.
Suppose that 5 J of work is needed to stretch a spring from its natural length of 28 cm to a length of 39 cm.(a) How much work is needed to stretch the spring from 33 cm to 35 cm? (Round your... more
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05/09/21

Draw vector fields

For the following exercises, describe each vector field by drawing some of its vectors. 1.F(x,y)=i+j2.F(x,y)=3i+xj
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05/07/21

Find the "volume" of the "four-dimensional sphere"
Find the "volume" of the "four-dimensional sphere"x2 + y2 + z2 + w2 = a2by evaluating
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05/07/21

What’s the factored form for the rational functions?
1) Conditions: Two factors in numerator, two factors in denominator. Two negative x-intercepts. No holes. A horizontal asymptote of y = 2. One vertical asymptote is located to the right of the... more
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05/07/21

Combinations Question (Please provide an explanation!)
There are 140 students in the entire 12th Grade class. 52 signed up for biology. 71 signed up for chemistry. 40 signed up for physics. 15 signed up for biology and chemistry 8 signed up for... more
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05/07/21

Find the equation of an exponential function (y=ab^x+k) that passes through the points (2,264) and (6,4044) and has a horizontal asymptote of y=12. Show all steps.
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05/07/21

Find the answer in minutes
A Ferris wheel is 40 meters in diameter and boarded from a platform that is 2 meters above the ground. The six o'clock position on the Ferris wheel is level with the loading platform. The wheel... more
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05/07/21

Create a equation for both.
A population of rabbits oscillates 19 above and below an average of 94 during the year, hitting the lowest value in January (t = 0). Find an equation for the population, P, in terms of the months... more
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05/07/21

Explain why Newtons method doesn't work for finding the root of the equation x^3 - 3x + 6 = 0 ?
The initial approximation is chosen to be x0 = 1
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05/06/21

I need help on this thank you. I need full answer.
The moon Titan orbits Saturn in an elliptical path with the center of Saturn at one focus. The major and minor axes of the orbit have lengths of 51,390 km and 49,255 km, respectively. Find the... more
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05/06/21

Pls help me solve this I don't understand
Analyzing the functions below, compare and contrast the two functions in each problem situation. Be sure to use complete sentences in your comparison. Be sure to include a discussion of... more
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05/06/21

Please help! cot^2 xsin^2 x=cos 2x+sin^2 x AND tan x/ 2sin xcos x = 1/1+cos 2 x
I need help with both. Thank You
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05/06/21

Two important Pre Cal Questions 1. If sin (θ − π/2)= 0.73, find cos (−θ). 2. Find secθ and cscθ 1 if cot θ = − 1/2 and cos θ < 0.
Please show me step by step help I genuinely don't understand this.
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05/06/21

Solve for 0 ≤ θ < 2π: -sq 2sinθ +2sinθcosθ −2sinθ =−2sinθ
Solve for 0 ≤ θ < 2π:2−sin^2 θ +cos^2 θ =3cosθ0=−cos2θ +3cosθ −2−cos2θ −2=3cosθwould appreciate all the help for all 4 asap. Thank You
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05/06/21

I need help with good explanation please

Which of the following is a statistical question?How many minutes do sixth grade students spend on a math test? my choice How many letters are in my last name?What color shoes are you wearing... more
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05/05/21

Suppose u and v are vectors in real numbers...
Determine whether each statement is always true or not always true.u dot v = v dot uu cross v = -(v cross u)-u dot v = -(u dot v)-u cross -v = -(u cross v)
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05/05/21

which statement describes the difference between a metallic bond and a hydrogen bond?
a. a metallic bond forms between positive ions and freely moving electrons surrounding them, while a hydrogen bond forms when two polar molecules are attracted to each otherb. a metallic bond forms... more
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