Tom K.

12/16/20

AP cal ab unit 5 FRQ

A graphing calculator may be used for the following problem. On a given workday, the rate, in tons per hour, at which unprocessed ore arrives at a refinery is modeled by O(t) = 20 + 10 cos (... more

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Algebra 2

12/16/20

Solve the following system over the set of real numbers: 2x^2 - 3y^2= -12, x^2 +4y^2 = 49

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Ap Statistics

12/16/20

AP Statistics, questions about probability with a deck of 52 cards

We draw 5 cards out of a deck of 52 cards.a. What is the probability that at least of those cards is Jack or a Queenb. What is the probability that the first card picked from those 5 randomly... more

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Probability

12/16/20

An auto insurance company classifies its customers in these categories poor, satisfactory, and preferred. Each year 15% of those in the poor category are moved to satisfactory and 5% of those in... more

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Algebra 1 Geometry Maths

12/16/20

Complicated Word Question TJ Prep

Two cylinders are partially filled with water, each to a depth of 24 feet. The smaller cylinder has a radius of 3 feet and the larger has a radius of 4 feet. Water is emptied from the larger... more

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Math Calculus Trigonometry

12/15/20

finite help math

There are 3 red and 2 white ball in a container. Two balls are taken from the container one after the other without replacement with the color of each ball noted as it is removed. What is the... more

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Calculus

12/15/20

Can't Seem To Get This

Use Spherical CoordinatesFind the volume of the solid that lies within the sphere x2 + y2 + z2 = 25, above the xy-plane, and below the cone z = x2 + y2.

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Precalculus

12/15/20

Solve and graph the inequality: x^3-2x^2-9x-2≥-20 give solution in interval notation

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Math Calculus Physics

12/15/20

I need help with tangent lines

Given the equation of a curve: x^3/3+y^2/2−3x+2y=−1/6.does the line tangent to the curve at the point (1,1) have a slope of 2/3?Thanks

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Probability

12/14/20

Probability of joint pdf’s

What’s the probability of P(X•Y<1) Given the pdf’s fY(y)=3/8•y2 for 0<y<2fX(x)=3/8•x2 for 0<x<2its supposed to be around 0.08 but I just can’t find the right method

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Statistics Probability Finite Math

12/14/20

What do you think the probability vector is after 20 transitions of P?

Consider the following Markov chain 0 1/2 1/2P=3/10 7/10 0 1/2 0 1/2Probability Vector: W [ 3/11, 5/11, 3/11]What do you think the probability vector... more

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Precalculus

12/14/20

Write cot ( 2 π/ 7 ) in terms of its cofunction.

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Math Statistics Math Help

12/13/20

Workers at a private business was given a grade (A, B, C) based on their yearly performance. The data was recorded along with the department they belong.

The results obtained using MINITAB are shown below:Expected counts are printed below observed... more

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Algebra 2

12/13/20

Solve the following system over the set of real numbers: x + 2y = 1, x^2 + 4y^2 = 25

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Math Geometry Sat Math

12/13/20

Coordinate Geometry Question

The line AG passes through the points (−4,6) and G (8,3).The line BC passes through the points (−1,2) and (0,8).The line EF passes through the points (−2,1) and (−1,5).Which two lines are... more

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Calculus

12/13/20

Curve sketching problem

Consider the function f(x)=-2x^(3) +27x^(2) - 84x +7. For this function there are three important intervals: (-inf,A], [A,B], and [B,inf) where A and B are critical values.Find A:______Find... more

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Calculus

12/13/20

Hyperbolic function

Find the numerical value of the expression:cosh^(-1) (3)no idea how to do please help

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Statistics

12/12/20

Correlation rho between two variables

Roll a fair, six-sided die 12 times. Let X be the sum of the first 10 rolls. Let Y be the sum of the last 10 rolls. Find the correlation rho(X, T) between X and Y.

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Calculus

12/12/20

Neatly sketch the region of integration and rewrite the double integral using dxdy.

Definite Integral Bounds Upper=4 Lower=4, second Definite Integral Bounds Upper=sqrt(x) Lower= y=x/2f(x,y)dydxAny leads my fellow mathematicians?

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Calculus

12/12/20

Lagrange Multiplier Fanatics

Given f(x,y)=e^-xy subject to the constraint x^3+y^3=16the max and min points im getting are both e^4. Is this totally incorrect?

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Probability

12/12/20

Probability Question

If 10 people consisting of 5 married couples, are randomly arranged in a row, find the probability that no person is next to their spouse. Give the numerical value of this probability.

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Math Algebra 1 Algebra 2

12/12/20

Use the Rational Zero Theorem to list possible rational zeros for the polynomial function. (Enter your answers as a comma-separated list.)

P(x)+3x3+25x2-3x-25Hint- You need to list all the values p/q. p is the factors of 25 and q is the factors of 3. You need all combinations here. Make sure to have all positive and negative of each one. more

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Precalculus

12/11/20

then what is the half-life for this radioactive element (i.e., how long will it take for 10 grams to reduce to 5 grams)?

If 21 grams of radioactive waste reduces to 8.75 grams of radioactive waste after 1400 years, then what is the half-life for this radioactive element (i.e., how long will it take for 10 grams to... more

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Probability

12/11/20

A big box contains 14 pairs of shoes. If 9 shoes are randomly selected from the box, find the probability that there will be EXACTLY two complete pairs.

Give the numerical value of this probability.

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Statistics

12/11/20

Statistics question about PDFs.

Let X be a U[0, 3] random variable (i.e., uniformly distributed on the interval [0, 3] ). Let Y be a U[0, 1] random variable independent of X. Let T = X + Y. Find fT(t) = pdf of T (for all real... more

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AP cal ab unit 5 FRQ

Solve the following system over the set of real numbers: 2x^2 - 3y^2= -12, x^2 +4y^2 = 49

AP Statistics, questions about probability with a deck of 52 cards

Markov Question

Complicated Word Question TJ Prep

finite help math

Can't Seem To Get This

Solve and graph the inequality: x^3-2x^2-9x-2≥-20 give solution in interval notation

I need help with tangent lines

Probability of joint pdf’s

What do you think the probability vector is after 20 transitions of P?

Write cot ( 2 π/ 7 ) in terms of its cofunction.

Workers at a private business was given a grade (A, B, C) based on their yearly performance. The data was recorded along with the department they belong.

Solve the following system over the set of real numbers: x + 2y = 1, x^2 + 4y^2 = 25

Coordinate Geometry Question

Curve sketching problem

Hyperbolic function

Correlation rho between two variables

Neatly sketch the region of integration and rewrite the double integral using dxdy.

Lagrange Multiplier Fanatics

Probability Question

Use the Rational Zero Theorem to list possible rational zeros for the polynomial function. (Enter your answers as a comma-separated list.)

then what is the half-life for this radioactive element (i.e., how long will it take for 10 grams to reduce to 5 grams)?

A big box contains 14 pairs of shoes. If 9 shoes are randomly selected from the box, find the probability that there will be EXACTLY two complete pairs.

Statistics question about PDFs.

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