Newest Mathematica Questions | Wyzant Ask An Expert

02/27/23

Expected Value Variance Please Help!!

Let 𝑋 be a random variable with density𝑓(𝑥)={𝐶(4𝑥−𝑥^2) , 0≤𝑥≤3 0 , otherwisewhere 𝐶∈𝐑 is some constant.C = 1/9E[X] = 1.75Find E[x^2] (the second order moment of 𝑋) = ??Find var[𝑋], the variance... more

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Mathematica Math Algebra 1 Algebra 2

02/25/23

find an angle between 0 and 2π that is coterminal with -7π/5

I need this ASAPany help would be super appreciated

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Mathematica Algebra 2

02/22/23

Help me pls! due soon

You deposit $400 each month into an account earning 4% interest compounded monthly.a) How much will you have in the account in 25 years?$b) How much total money will you put into the account?$c)... more

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Mathematica

02/21/23

Math homework im struggling with

write an equation for the line that is perpendicular to th graph of y=4x+1 and passes through the point (12,-6)

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Mathematica Math Algebra 1 Algebra 2

02/15/23

How to answer matrix question 2.

Given1203and [1 2 0 3] find AB and BA

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Mathematica Math Algebra 1 Algebra 2

02/15/23

How to answer matrix question 1.

A=5 -3-9 0-5 1-7 -4G=-1 -9-3 -108 -61 04[A] + 2[G] =

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Mathematica

02/14/23

John's house if 3/5 of mile from school. On his way home he stops at the library which is 1/4 mile from the school and 1/7 mile from his home. how far did he ride his bike today

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Mathematica Math Probability

02/13/23

Dice Probability help

What is the probability that in 10 casts of a fair die we get number six more than once?Does this problem use binomial distribution? If it doesn't then what does it use? Could it be explained please?

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Mathematica Math Calculus Precalculus

02/13/23

Assume that f(x,y,z) = x^2 +y^2 +z^2 +xz has a critical point at (0,0,0). Is f(0,0,0) a maximum, minimum, saddle point, or do we not have enough information to determine this?

Show all of your work and every step to receive full credit. If there is not enough information to determine if (0,0,0) is a max, min, or saddle, please justify your answer.

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Mathematica Math Algebra 1 Algebra 2

02/13/23

What is the percentage, to the nearest tenth, of 29-year olds with some degree of heart disease?

The function P(x)= 120/1+372e^-0.133x models the percentage, P(x), of Americans who arex years old and have some degree of heart disease.

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Mathematica Math Algebra 1 Algebra 2

02/13/23

A car purchased for $9,000 depreciates at a constant rate of 16.5%. What will be the value of the car in 6 years.

A car purchased for $9,000 depreciates at a constant rate of 16.5%. What will be the value of the car in 6 years.The Value in 6 years is $_________. Round answer to 2 decimal places

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Mathematica Math Probability

02/13/23

Cards Probability help

In the game of poker, five cards are dealt. Recall the regular deck of cards has 13 denominations and 4 suits.What is the probability of getting 5 consecutive cards (i.e., from 2,3,4,5,6, all the... more

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Mathematica Math Algebra 1 Algebra 2

02/13/23

Find how much money needs to be deposited now into an account to obtain $6,200 (Future Value) in 15 years if the interest rate is 5% per year compounded continuously.

Find how much money needs to be deposited now into an account to obtain $6,200 (Future Value) in 15 years if the interest rate is 5% per year compounded continuously.Round your answer to 2 decimal... more

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Mathematica Math Algebra 1 Algebra 2

02/13/23

Determine the approximate value of the vehicle years after purchase.

A vehicle purchased for $25000 depreciates at a constant rate of 7%Round to the nearest whole number.

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Mathematica Math Algebra 1 Algebra 2

02/13/23

What is the doubling time for the investment? Round answer to 1 decimal place.

The amount of money in an investment is modeled by the function A(T)=650(1.0455)^T. The variable A represents the investment balance in dollars, and T the number of years.

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Mathematica Math Algebra 1 Algebra 2

02/13/23

The Function F(T)=575,000/1+4000e^-T

describes the number of people, F(T) , who have become ill with ebola T weeks after the initial outbreak in a particular community.How many people became ill with ebola when the epidemic began?How... more

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Mathematica Math Algebra 1 Algebra 2

02/13/23

$10000 is deposited in an account earning 8% interest compounded continuously.

Use the continuous interest formula below to determine how long it takes for the amount in the account to double. A=Pe^rt. Round answer to 2 decimal places.____ Years?

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Mathematica Math Algebra 1 Algebra 2

02/13/23

In April 1986, a flawed reactor design played a part in the Chernobyl nuclear meltdown.

Approximately 14252 becqurels (Bqs), units of radioactivity, were initially released into the environment. Only areas with less than 800 Bqs are considered safe for human habitation.The function... more

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Mathematica Math Algebra 1 Algebra 2

02/13/23

You deposit $9000 in an account earning 5% interest compounded continuously.

The amount of money in the account after T years is given by A(T)=9000e^0.05THow much will you have in the account in 14 years? round your answer to 2 decimal places.I got 18123.77437 for the... more

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Mathematica Math Calculus

02/12/23

Gradient Ascent Problem Calculus

Suppose we apply gradient ascent algorithm to find a local maximum of the function f(x,y) = 3x cos^3 *y + 1/x. If we start from the point (x0,y0) = (−1, π/3 ) and use learning rate α = 0.1 to go... more

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Mathematica Math Calculus Precalculus

02/12/23

Consider the function f(x,y) = x^2 − 2xy + (y^3)/3 −3y

(a) Compute all its critical points.(b) Find Hessian matrices and quadratic forms for each critical point.(c) For each quadratic form, compute the eigenvalues λ1, λ2 of the associated 2 × 2 matrix... more

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Mathematica Math Algebra 1 Algebra 2

02/09/23

How to solve this homogenous linear system corresponding to the coefficient matric provided using the Gauss- Jordan Elimination Method?

2 2 -1 0 1-1 -1 2 -3 1 1 1 -2 0 -10 0 1 1 1

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Mathematica Math Algebra 1 Algebra 2

02/09/23

Solve the linear system by Gaussian Eliminatio method and determine whether the system is consistent or non consistent

x-y+2z -w= -12x+y-2z-2w= -2 x + 2y-4z+ w= 13x-3w= -3

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Mathematica Math Algebra 1 Algebra 2

02/06/23

How much would you need to deposit in an account now in order to have $4000 in the account in 5 years?

Assume the account earns 5% interest compounded monthly.when I did the question myself I got:4000=P(1+0.05)^(5)(12) for the equation and the work I did... more

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Answers •2

Mathematica Math Calculus

02/03/23

Tangent vector of the curve help

let f(x,y) = 4x^2 - 6x^2 (sqrt(y)) and let γ(t) = <x(t),y(t)> be a curve in the Oxy plane such that at some point t0, we have γ(t0) = (-1,9) and γ'(t0) = (2,-1). Find the tangent vector... more

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Expected Value Variance Please Help!!

find an angle between 0 and 2π that is coterminal with -7π/5

Help me pls! due soon

Math homework im struggling with

How to answer matrix question 2.

How to answer matrix question 1.

John's house if 3/5 of mile from school. On his way home he stops at the library which is 1/4 mile from the school and 1/7 mile from his home. how far did he ride his bike today

Dice Probability help

Assume that f(x,y,z) = x^2 +y^2 +z^2 +xz has a critical point at (0,0,0). Is f(0,0,0) a maximum, minimum, saddle point, or do we not have enough information to determine this?

What is the percentage, to the nearest tenth, of 29-year olds with some degree of heart disease?

A car purchased for $9,000 depreciates at a constant rate of 16.5%. What will be the value of the car in 6 years.

Cards Probability help

Find how much money needs to be deposited now into an account to obtain $6,200 (Future Value) in 15 years if the interest rate is 5% per year compounded continuously.

Determine the approximate value of the vehicle years after purchase.

What is the doubling time for the investment? Round answer to 1 decimal place.

The Function F(T)=575,000/1+4000e^-T

$10000 is deposited in an account earning 8% interest compounded continuously.

In April 1986, a flawed reactor design played a part in the Chernobyl nuclear meltdown.

You deposit $9000 in an account earning 5% interest compounded continuously.

Gradient Ascent Problem Calculus

Consider the function f(x,y) = x^2 − 2xy + (y^3)/3 −3y

How to solve this homogenous linear system corresponding to the coefficient matric provided using the Gauss- Jordan Elimination Method?

Solve the linear system by Gaussian Eliminatio method and determine whether the system is consistent or non consistent

How much would you need to deposit in an account now in order to have $4000 in the account in 5 years?

Tangent vector of the curve help

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