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Pre Calculus Calculus Trigonometry Algebra

12/02/20

How to find the points of intersection between a circle and a parabola?

Use x(squared)+2y=12 and x(squared)+y(squared)=36 as an example. I've been trying to review for my finals and this is the topic that has been very challenging for me. Thank you!

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Pre Calculus Math Trigonometry

11/27/20

Polar Coordinates

The rectangular coordinates of a point are given. Find polar coordinates (r,θ) of this point with θ expressed in radians. Let r>0 and −2π<θ<2π.(2,−2sq root of3)

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Pre Calculus Precalculus Pre Calculus

11/24/20

convert the equation to polar coordinates and simplify. (x^2+y^2)^2=2xy

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Pre Calculus Precalculus Pre Calculus

11/24/20

convert the equation to polar coordinates and simplify x^2+y^2=9x+9 (if you could show your work please)

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Pre Calculus Precalculus Pre Calculus

11/24/20

Solve for the exact solutions in the interval [0,2π). Separate solutions with a comma.If the equation has no solutions, respond with DNE.

Solve for the exact solutions in the interval [0,2π). Separate solutions with a comma.If the equation has no solutions, respond with DNE.sin(5x)= - 1/2

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Pre Calculus Precalculus Pre Calculus

11/24/20

Give the smallest two solutions of sin(3θ) = -0.0271 on [ 0, 2 π]

Give the smallest two solutions of sin(3θ) = -0.0271 on [ 0, 2 π]. Separate the two solutions with a coma.

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Pre Calculus Precalculus Pre Calculus

11/24/20

Give the smallest two solutions of cos (2θ) = 0.8212 on [0, 2π). Separate the two solutions with a comma

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Pre Calculus Precalculus Pre Calculus

11/23/20

A pair of parametric equations is given. x = cos^3(t), y = sin^3(t), 0 ≤ t ≤ 2𝜋 Find a rectangular-coordinate equation for the curve by eliminating the parameter.

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Pre Calculus Precalculus Pre Calculus

11/22/20

Complete the table for a savings account in which interest is compounded continuously. (Round your answers to four decimal places.)

Initial Investment: $350Annual % Rate: ______ (%)Time to Double: ______ (yr)Amount after 13 years: $435.21

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Pre Calculus Precalculus Pre Calculus

11/22/20

A new 2014 luxury sedan that sold for $38,880 has a book value V of $24,319 after t = 2 years.

(a) Find a linear model for the value V of the sedan.V(t) =(b) Find an exponential model for the value V of the sedan. Round the numbers in the model to four decimal places.V(t) =(c) Use a graphing... more

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Pre Calculus

11/21/20

find cot theta and csc theta if csc theta = 5/2 and cos<0

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Pre Calculus Math Precalculus Mathematics

11/20/20

Precalculus help

With respect to which of the following is the graph of -7x^6 + 2xy + 5=0 symmetric?

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Pre Calculus

11/20/20

Suppose that f(x)=-3x^3-11x^2-8x+4 If (x + 2) is a factor of f(x), what is f(x) completely factored?

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Pre Calculus Math Precalculus Pre Calculus

11/20/20

a cup of coffee has cooled from 92 degrees C to 60 degrees C after 12 minutes in a room at 22 degrees C C. How long will it take to cool to 40 degrees?

round to the nearest tenth as needed.

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Answers •2

Pre Calculus Math Precalculus Pre Calculus

11/20/20

the half-life of a substance is 15 days. there's 2.5 grams of the substance initially.type an expression for the amount of substance as a function of t. when will there be less than 1 g remaining?

f(t) = __ (simplify your answer)there will be less than 1 gram remaining after about __ days. (round to the nearest tenth as needed)

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Pre Calculus Math Precalculus Pre Calculus

11/20/20

the 2000 population of a city was 715,000 and was increasing at the rate of 1.46% each year. at that rate when will the population be 1 million?

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Pre Calculus Math Precalculus Mathematics

11/19/20

Precalculus help

Consider the graph of y=x^3. It is slid 3 units to the left, then reflected in the x-axis, and finally slid 8 units down. What is the resulting equation?

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Pre Calculus Precalculus Pre Calculus

11/19/20

Simplify without a calculator: 1−2sin^2(15°)

Simplify without a calculator: 1 - 2sin2(15°)

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Pre Calculus Precalculus Pre Calculus

11/19/20

Simplify without a calculator: 2 sin(22.5∘) cos(22.5∘)

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Pre Calculus Precalculus Pre Calculus

11/19/20

If csc ( x ) = 13/12 (in Quadrant-I), find sin ( 2 x ) =

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Pre Calculus

11/19/20

What function expresses the volume of the box in terms of the side of the squares cut out?

A 5-sided, open topped box is to be formed from a rectangular piece of cardboard that is 28 inches by 15 inches. Congruent squares are to be cut from each corner and the resulting flaps will be... more

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Pre Calculus Prealgebra Precalculus Pre Calculus

11/19/20

What is the pH?

If a sample of a certain solution is determined to have a [H3 O+ ] concentration of 4.36 x 10-10 moles/liter, what is its pH? Round off your answer to one decimal place.

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Pre Calculus Math Algebra 2 Calculus

11/17/20

Decide if each expression represents one third the sum of 5 and 4.

Choose one of the options below. 1/3x(5+4) 1/3x5+4 (1/3x5)+(1/3x4) 1/3+(5x1/3)+4

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Pre Calculus Precalculus Trigonometry Trig

11/17/20

Find a formula for h(x). Give an exact expression.

h is a trigonometric function of the form h(x)=a cos(bx+c)+d.Below is the graph of h(x). The function has a maximum point at (3,6) and a minimum point at (6.5, -9). Find a formula for h(x). Give an... more

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Pre Calculus Precalculus Trigonometry Trig

11/17/20

What is the amplitude of the function?

Below is the graph of a trigonometric function. It intersects its midline at (π, 2.75) and it has a maximum point at point at (4/5 π, 6.75). What is the amplitude of the function?(The pi in the... more

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How to find the points of intersection between a circle and a parabola?

Polar Coordinates

convert the equation to polar coordinates and simplify. (x^2+y^2)^2=2xy

convert the equation to polar coordinates and simplify x^2+y^2=9x+9 (if you could show your work please)

Solve for the exact solutions in the interval [0,2π). Separate solutions with a comma.If the equation has no solutions, respond with DNE.

Give the smallest two solutions of sin(3θ) = -0.0271 on [ 0, 2 π]

Give the smallest two solutions of cos (2θ) = 0.8212 on [0, 2π). Separate the two solutions with a comma

A pair of parametric equations is given. x = cos^3(t), y = sin^3(t), 0 ≤ t ≤ 2𝜋 Find a rectangular-coordinate equation for the curve by eliminating the parameter.

Complete the table for a savings account in which interest is compounded continuously. (Round your answers to four decimal places.)

A new 2014 luxury sedan that sold for $38,880 has a book value V of $24,319 after t = 2 years.

find cot theta and csc theta if csc theta = 5/2 and cos<0

Precalculus help

Suppose that f(x)=-3x^3-11x^2-8x+4 If (x + 2) is a factor of f(x), what is f(x) completely factored?

a cup of coffee has cooled from 92 degrees C to 60 degrees C after 12 minutes in a room at 22 degrees C C. How long will it take to cool to 40 degrees?

the half-life of a substance is 15 days. there's 2.5 grams of the substance initially.type an expression for the amount of substance as a function of t. when will there be less than 1 g remaining?

the 2000 population of a city was 715,000 and was increasing at the rate of 1.46% each year. at that rate when will the population be 1 million?

Precalculus help

Simplify without a calculator: 1−2sin^2(15°)

Simplify without a calculator: 2 sin(22.5∘) cos(22.5∘)

If csc ( x ) = 13/12 (in Quadrant-I), find sin ( 2 x ) =

What function expresses the volume of the box in terms of the side of the squares cut out?

What is the pH?

Decide if each expression represents one third the sum of 5 and 4.

Find a formula for h(x). Give an exact expression.

What is the amplitude of the function?

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