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11/17/19

Precalc question

A car leaves Seattle heading east. The speed of the car in mph after m minutes is given by the function C(m) = 70m^2 / (10 + m^2) .(a) Find a function m = f(s) that converts seconds s into minutes... more

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Pre Calculus Precalculus

11/15/19

Why does the test for an upper bound on the zeros using synthetic division not work on a particular function?

y= x7 -5x5 +2x4 +12x2 -6x-12When I graph this the highest zero is 1.72, When I do the upper bound test using synthetic division with the value of 2, the third term comes out negative when all the... more

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Pre Calculus Math Precalculus Maths

11/15/19

Precalc question

A car leaves Seattle heading east. The speed of the car in mph after m minutes is given by the function C(m) = 70m2 10 + m2 .(a) Find a function m = f(s) that converts seconds s into minutes m.... more

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Pre Calculus Math Precalculus Maths

11/15/19

Precalc question

(a) Let f(x) be a linear function, f(x) = ax + b for constants a and b. Show that f(f(x)) is a linear function.(b) Find a function g(x) such that g(g(x)) = 6x − 8.

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Pre Calculus Math Precalculus Maths

11/15/19

Precalc Question

Let f(x) = 1 2 x + 3.Give a quadratic function whose fixed points are x = −2 and x = 3.

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Pre Calculus Math Precalculus Maths

11/15/19

Precalc Question

Let y = f(z) = √ 4 − z 2 and z = g(x) = 2x + 3. Compute the composition y = f(g(x)). Find the largest possible domain of x-values so that the composition y = f(g(x)) is defined.

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Pre Calculus Math Precalculus Maths

11/14/19

Precalc Question

Suppose you have a function y = f(x) such that the domain of f(x) is 1 ≤ x ≤ 6 and the range of f(x) is −3 ≤ y ≤ 5.(a) What is the domain of f(2(x − 3)) ?(b) What is the range of f(2(x − 3)) ?(c)... more

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Pre Calculus

11/14/19

In two or more complete sentences, explain how to find the time it takes for a rocket following the path, h(x) = -4x 2 + 16x, to hit the ground.

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Pre Calculus Trigonometry

11/13/19

Find exact value of each expression given that tan(u) = 3 4 , with u in third quadrant, sin(v) = 5 13 with v in second quadrant .

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Pre Calculus Math Precalculus Maths

11/10/19

Precalc question

Steve likes to entertain friends at parties with “wire tricks.” Suppose he takes a piece of wire 60 inches long and cuts it into two pieces. Steve takes the first piece of wire and bends it into... more

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Pre Calculus Math Precalculus Maths

11/10/19

Precalc question

You have $6000 with which to build a rectangular enclosure with fencing. The fencing material costs $20 per meter. You also want to have two parititions across the width of the enclosure, so that... more

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Pre Calculus Math Precalculus Maths

11/10/19

Precalc question

Jun has 300 meters of fencing to make a rectangular enclosure. She also wants to use some fencing to split the enclosure into two parts with a fence parallel to two of the sides. What dimensions... more

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Pre Calculus Math Precalculus Maths

11/10/19

Precalc question

A Norman window is a rectangle with a semicircle on top. Suppose that the perimeter of a particular Norman window is to be 24 feet. What should its dimensions be in order to maximize the area of... more

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Pre Calculus Math Precalculus Maths

11/10/19

Precalc question

Rosalie is organizing a circus performance to raise money for a charity. She is trying to decide how much to charge for tickets. From past experience, she knows that the number of people who will... more

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Pre Calculus Math Precalculus Maths

11/10/19

Precalculus question

Sylvia has an apple orchard. One season, her 100 trees yielded 140 apples per tree. She wants to increase her production by adding more trees to the orchard. However, she knows that for every 10... more

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Pre Calculus Math Precalculus Maths

11/10/19

Precalculus question

The initial price of buzz.com stock is $10 per share. After 20 days the stock price is $20 per share and after 40 days the price is $25 per share. Assume that while the price of the stock is not... more

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Pre Calculus Algebra 1 Algebra 2

11/09/19

Exponential writing assignment

Lex "JC" Luthor is tired of his long-time fiend Superman. JC has decided that he is going to take him out with kryptonite, so JC has been using his money to grow the awesome green material JC knows... more

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Pre Calculus Math

11/07/19

A number is 10 more than another number. Twice the sum of the two numbers is 12. Find the two numbers. (Enter your answers as a comma-separated list.)

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Pre Calculus Math Precalculus Maths

11/05/19

Precalc question

If the graph of the quadratic function f(x) = x^2 + dx + 3d has its vertex on the x-axis, what are the possible values of d? What if f(x) = x^2+3dx−d^2+1

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Pre Calculus Math Precalculus Sat Math

10/31/19

Write an equation for each parabola

(a)vertex (2,-1)focus (2,-5)(b)focus (3,5)directrix x=0

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Pre Calculus Math Precalculus Maths

10/30/19

Express the area of the shaded region below as a function of x. The dimensions in the figure are centimeters.

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Pre Calculus Math Precalculus Maths

10/29/19

I have a precalculus problem

A baseball diamond is a square with sides of length 90 ft. Assume Edgar hits a home run and races around the bases (counterclockwise) at a speed of 18 ft/sec. Express the distance between Edgar and... more

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Pre Calculus

10/27/19

I have two pre-calculus questions I need help on. They deal with decomposing partial fractions with repeating linear factors.

Problem 1: x/5(x+2)^2 Problem 2: 5x^2+20x+8/2x(x+1)^2

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Pre Calculus Math Precalculus Maths

10/27/19

I'm stuck on this precalc question

Give the multipart rule for g(x) for the following functions. g(x) = |f(x)|(a) f(x) = −0.5x − 1(b) f(x) = 2x − 5(c) f(x) = x + 3

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Pre Calculus Math Precalculus Maths

10/27/19

I still don't understand this precalculus question

I need some help on precalculusPizzeria Buonapetito makes a triangular-shaped pizza with base width of 30 inches and height 20 inches as shown. Alice wants only a portion of the pizza and does so... more

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Precalc question

Why does the test for an upper bound on the zeros using synthetic division not work on a particular function?

Precalc question

Precalc question

Precalc Question

Precalc Question

Precalc Question

In two or more complete sentences, explain how to find the time it takes for a rocket following the path, h(x) = -4x 2 + 16x, to hit the ground.

Find exact value of each expression given that tan(u) = 3 4 , with u in third quadrant, sin(v) = 5 13 with v in second quadrant .

Precalc question

Precalc question

Precalc question

Precalc question

Precalc question

Precalculus question

Precalculus question

Exponential writing assignment

A number is 10 more than another number. Twice the sum of the two numbers is 12. Find the two numbers. (Enter your answers as a comma-separated list.)

Precalc question

Write an equation for each parabola

Express the area of the shaded region below as a function of x. The dimensions in the figure are centimeters.

I have a precalculus problem

I have two pre-calculus questions I need help on. They deal with decomposing partial fractions with repeating linear factors.

I'm stuck on this precalc question

I still don't understand this precalculus question

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y=(x^2-x-2)/(x^2-16)

The focus of a parabola has coordinates (0,-3/10) and the vertex at the origin. Find the equations of the directrix, the axis of symmetry, and the parabola.

3^(2x)+28=11(3^x)

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