Newest Precalc Questions | Wyzant Ask An Expert

07/14/21

One leg of a right triangle is 4 feet long

One leg of a right triangle is 4 feet long, and the angle next to it pi/5 radians. Find the length of the other leg and the hypotenuse.

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Precalc Math Algebra 1 Algebra 2

05/14/21

Given triangle ABC with angle A=105 degrees, b=16, and c=12, solve for the missing side. Do not solve for the entire triangle.

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Precalc Math Algebra 1 Algebra 2

05/14/21

Angle 0 is in quadrant II, and sin0 = 5/13. What is the value of cos0?

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Precalc Math Algebra 1 Algebra 2

05/14/21

If (9,-4) is a point on the terminal side of an angle, 0, in standard position, what is the value of tan 0?

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Precalc Math Algebra 1 Algebra 2

05/14/21

What does it mean for angles to be coterminal? Can I have an example?

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Precalc Math Algebra 1 Algebra 2

05/14/21

What is the arc length with a central angle of 36 degrees and a radius of 15 cm?

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Precalc Math Calculus Precalculus

05/13/21

Find θ if d is 2.6 miles.

The radar on a ship picks up two shipwrecks, A and B, 5.12 miles beneath the surface. The distance between the shipwrecks is 1.25 miles. The angle of depression to Shipwreck B depends on the... more

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Precalc Calculus Calculus Precalculus

03/21/21

9.5: For f(x)=2x4−4x2+5 find the following. (A) f′(x) (B) The slope of the graph of f at x=2 (C) The equation of the tangent line at x=2 (D) The value(s) of x where the tangent line is...

For f(x)=2x4−4x2+5 find the following.(A) f′(x)(B) The slope of the graph of f at x=2 (C) The equation of the tangent line at x=2 (D) The value(s) of x where the tangent line is horizontal

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Precalc Calculus Calculus Precalculus

03/20/21

10.2: Find the equation of the line tangent to the graph of f at the indicated value of x. f(x)=10e^x+2x; x=0 y= ________

Find the equation of the line tangent to the graph of f at the indicated value of x.f(x)=10e^x+2x; x=0y= ________

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Precalc Calculus Pre Calculus Calc

03/10/21

If an object moves along the y-axis (marked in feet) so that its position at time x (in seconds) is given by f(x)=240x−16x^2, find the following.

If an object moves along the y-axis (marked in feet) so that its position at time x (in seconds) is given by f(x)=240x−16x^2, find the following.(A) The instantaneous velocity function... more

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Precalc Calculus Pre Calculus Calc

03/10/21

The total cost (in dollars) of producing x food processors is C(x)=2200+70x−0.3x^2.

The total cost (in dollars) of producing x food processors is C(x)=2200+70x−0.3x^2.(A) Find the exact cost of producing the 91st food processor.(B) Use the marginal cost to approximate the... more

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Precalc Calculus Precalculus Pre Calc

03/10/21

The total cost (in dollars) of producing x food processors is C(x)=2100+80x−0.5x^2.

The total cost (in dollars) of producing x food processors is C(x)=2100+80x−0.5x^2.(A) Find the exact cost of producing the 41st food processor.(B) Use the marginal cost to approximate the... more

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Precalc Calculus Precalculus Pre Calculus

03/10/21

Find the marginal average cost function if cost and revenue are given by C(x)=144+5.8x and R(x)=9x−0.07x^2.

Find the marginal average cost function if cost and revenue are given by C(x)=144+5.8x and R(x)=9x−0.07x^2.The marginal average cost function is C′(x)= ______________

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Precalc Calculus Precalculus Calc

03/10/21

Find the marginal profit function if cost and revenue are given by C(x)=224+0.8x and R(x)=6x−0.05x^2.

Find the marginal profit function if cost and revenue are given by C(x)=224+0.8x and R(x)=6x−0.05x^2.P′(x)= ________

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Precalc Calculus Precalculus Pre Calculus

03/10/21

Find the profit function if cost and revenue are given by C(x)=128+2.4x and R(x)=8x−0.03x^2

Find the profit function if cost and revenue are given by C(x)=128+2.4x and R(x)=8x−0.03x^2The profit function is P(x)= ________

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Precalc Calculus Precalculus Pre Calculus

03/10/21

Find the marginal revenue function.

Find the marginal revenue function.R(x)=x(17−0.05x)R′(x)= _________

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Precalc Calculus Precalculus Pre Calculus

03/10/21

9.7.11 Find the marginal cost function

Find the marginal cost function.C(x)=210+3.3x−0.07xC′(x) = ____________

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Precalc Math Precalculus Algebra

02/17/21

Precalc exponential function

If f(x) = 3x – 2, find the exponential function which passes through f(6) and f(20). Round to the nearestthousandth.How do you do this question?? Do you use logs?

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Precalc Math Calculus Precalculus

02/12/21

Solve the equation. Round to 4 decimal places when necessary.

(1/9)^k ⋅ 27^k+4 = (1/81)^3-k

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Precalc Math Calculus Precalculus

02/12/21

PRE CALC AB - A new app was downloaded 175 times in its first week. Since then, the number of downloads increased by 16.5% each week.

A new app was downloaded 175 times in its first week. Since then, the number of downloads increased by 16.5% each week. a) Write a continuous exponential growth model to approximate the number of... more

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Precalc Math Calculus Precalculus

02/12/21

PRE CALC AB - Kale invested $1,500 in an account with an interest rate of 6.5%.

Kale invested $1,500 in an account with an interest rate of 6.5%. a) Write an exponential equation to find the account balance in t years if the interest is compounded monthly? b) What will be the... more

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Precalc Math Calculus Geometry

01/06/21

sin (theta+48°) = cos 2theta. What is the second step to find theta? What does theta equal?

Any help with this would be greatly appreciated.

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Precalc Calculus Precalculus Pre Calculus

12/17/20

Explain why that is false. Find the annual interest rate compounded monthly that is actually being charged for financing $17,475 with 72 monthly payments of $299.

The ad for a 4-door sedan claims that a monthly payment of $299 constitutes 0% financing. Explain why that is false. Find the annual interest rate compounded monthly that is actually being... more

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Precalc Calculus Pre Calculus Calc

12/17/20

If payments are made at the end of each period, how much money will be in the account in 6 years?

In order to accumulate enough money for a down payment on a house, a couple deposits $254 per month into an account paying 6% compounded monthly. If payments are made at the end of each period,... more

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Precalc Calculus Pre Calculus Calc

12/15/20

The principal P is borrowed and the loan's future value A at time t is given. Determine the loan's simple interest rate r to the nearest tenth of a percent.

The principal P is borrowed and the loan's future value A at time t is given. Determine the loan's simple interest rate r to the nearest tenth of a percent.P = $2300.00, A = $2328.75, t =... more

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One leg of a right triangle is 4 feet long

Given triangle ABC with angle A=105 degrees, b=16, and c=12, solve for the missing side. Do not solve for the entire triangle.

Angle 0 is in quadrant II, and sin0 = 5/13. What is the value of cos0?

If (9,-4) is a point on the terminal side of an angle, 0, in standard position, what is the value of tan 0?

What does it mean for angles to be coterminal? Can I have an example?

What is the arc length with a central angle of 36 degrees and a radius of 15 cm?

Find θ if d is 2.6 miles.

9.5: For ​f(x)=2x4−4x2+5 find the following. ​ (A) f′(x) ​(B) The slope of the graph of f at x=2 ​(C) The equation of the tangent line at x=2 ​(D) The​ value(s) of x where the tangent line is...

10.2: Find the equation of the line tangent to the graph of f at the indicated value of x. f(x)=10e^x+2x​; x=0 y= ________

If an object moves along the​ y-axis (marked in​ feet) so that its position at time x​ (in seconds) is given by f(x)=240x−16x^2​, find the following.

The total cost​ (in dollars) of producing x food processors is ​C(x)=2200+70x−0.3x^2.

The total cost​ (in dollars) of producing x food processors is ​C(x)=2100+80x−0.5x^2.

Find the marginal average cost function if cost and revenue are given by ​C(x)=144+5.8x and R(x)=9x−0.07x^2.

Find the marginal profit function if cost and revenue are given by ​C(x)=224+0.8x and R(x)=6x−0.05x^2.

Find the profit function if cost and revenue are given by ​C(x)=128+2.4x and R(x)=8x−0.03x^2

Find the marginal revenue function.

9.7.11 Find the marginal cost function

Precalc exponential function

Solve the equation. Round to 4 decimal places when necessary.

PRE CALC AB - A new app was downloaded 175 times in its first week. Since then, the number of downloads increased by 16.5% each week.

PRE CALC AB - Kale invested $1,500 in an account with an interest rate of 6.5%.

sin (theta+48°) = cos 2theta. What is the second step to find theta? What does theta equal?

Explain why that is false. Find the annual interest rate compounded monthly that is actually being charged for financing ​$17,475 with 72 monthly payments of ​$299.

If payments are made at the end of each​ period, how much money will be in the account in 6 ​years?

The principal P is borrowed and the​ loan's future value A at time t is given. Determine the​ loan's simple interest rate r to the nearest tenth of a percent.

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9.5: For f(x)=2x4−4x2+5 find the following. (A) f′(x) (B) The slope of the graph of f at x=2 (C) The equation of the tangent line at x=2 (D) The value(s) of x where the tangent line is...

10.2: Find the equation of the line tangent to the graph of f at the indicated value of x. f(x)=10e^x+2x; x=0 y= ________

If an object moves along the y-axis (marked in feet) so that its position at time x (in seconds) is given by f(x)=240x−16x^2, find the following.

The total cost (in dollars) of producing x food processors is C(x)=2200+70x−0.3x^2.

The total cost (in dollars) of producing x food processors is C(x)=2100+80x−0.5x^2.

Find the marginal average cost function if cost and revenue are given by C(x)=144+5.8x and R(x)=9x−0.07x^2.

Find the marginal profit function if cost and revenue are given by C(x)=224+0.8x and R(x)=6x−0.05x^2.

Find the profit function if cost and revenue are given by C(x)=128+2.4x and R(x)=8x−0.03x^2

Explain why that is false. Find the annual interest rate compounded monthly that is actually being charged for financing $17,475 with 72 monthly payments of $299.

If payments are made at the end of each period, how much money will be in the account in 6 years?

The principal P is borrowed and the loan's future value A at time t is given. Determine the loan's simple interest rate r to the nearest tenth of a percent.