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Precalculus

11/07/22

Let sint=a, cost=b, and tant=c. Write the expression in terms of a, b, and c.

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Precalculus

11/07/22

A tower that is 105 feet tall casts a shadow 110 feet long. Find the angle of elevation of the sun to the nearest degree.

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Precalculus

11/07/22

Find the exact value of each of the six trigonometric functions of θ, if (4,−8) is a point on the terminal side of angle θ.

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Precalculus

11/07/22

Find the length of the arc on a circle of radius r intercepted by a central angle 𝜃. (Round your answer to two decimal places.)

Radius, r=11 inches;Central angle, θ=40

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Precalculus

11/07/22

From a point A that is 8.30 meters above level ground, the angle of elevation of the top of a building is 37°50'

and the angle of depression of the base of the building is 15°30'. Approximate the height of the building. (Round your answer to the nearest tenth.)

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Precalculus

11/07/22

The given amount of annual interest is earned from a total of $14,000 invested in two funds paying simple interest.

Write and solve a system of equations to find the amount invested at each given rate.Annual interest: $520Invested at 2%: $Invested at 5%; $

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Precalculus Math Algebra 1 Algebra 2

11/06/22

Determine the cost in dollars of producing x units of the game console for a retailer: C(x) = 80x + 150.

Find an expression for the average cost function C̅(x). Solve and interpret C̅(x) < 100

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Precalculus

11/06/22

Describe all the x -values at a distance of 20 or less from the number 7

I need to put all the x-values at a distance of 20 or less from the number 7 in interval notation. I'm not sure if I 7 would count as one or if I need to stop at 6 and then put a union and start... more

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Precalculus Trigonometry

11/06/22

Find sin2x, cos2x, and tan2x if cosx= -1/sqrt5 and x terminates in quadrant 3

Find sin2x, cos2x, and tan2x if cosx= -1/sqrt5 and x terminates in quadrant 3.The answer i got was wrong and i'm not too sure on how to do it.

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Precalculus Trigonometry

11/05/22

Find sin2x, cos2x, and tan2x if cosx= -1/sqrt5 and x terminates in quadrant 3

Find sin2x, cos2x, and tan2x if cosx= -1/sqrt5 and x terminates in quadrant 3. Hello, I'm stuck on this one problem and haven't been able to figure it out how the past minuite. Can anyone help me?

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Precalculus Trigonometry

11/05/22

Find sin2x, cos2x, and tan2x if sinx = -3/sqrt10 and x terminates in quadrant 3.

Find sin2x, cos2x, and tan2x if sinx = -3/sqrt10 and x terminates in quadrant 3. I've been stuck on this and don't know how to go about it.

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Precalculus Math Calculus

11/05/22

Manufacturing a molded part

The cost of manufacturing a molded part is related to the quantity produced during a production run. When 100 parts are produced, the cost is $300. When $104 parts are produced, the cost is $324.... more

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Precalculus

11/05/22

Why or where was the number 9 introduced in the answer to part b?

A cylinder (round can) has a circular base and a circular top with vertical sides in between. Let r be the radius of the top of the can and let h be the height. The surface area of the cylinder, A,... more

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Precalculus

11/05/22

Find 𝜃 when the range r of a projectile is given by r = 1 32 v02 sin(2𝜃). (Enter your answers as a comma-separated list. Round your answers to one decimal place.)

A baseball is hit at an angle of 𝜃 with the horizontal and with an initial velocity of v0 = 104 feet per second.An outfielder catches the ball 300 feet from home plate.Find 𝜃 when the range r of a... more

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Precalculus

11/05/22

Find the time beyond which the distance between the weight and equilibrium does not exceed 0.8 ft. (Round your answer to 2 decimal places.)

The displacement from equilibrium of a weight oscillating on the end of a spring is given byy = 1.21 e−0.22t cos(4.9t)where y is the displacement (in feet) and t is the time (in seconds). Use a... more

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Precalculus

11/05/22

The polynomial P(x)=5x2(x−4)3(x+9) has degree ___ It has zeros 0,4, and _ The zero 0 has multiplicity _ and the zero 4 has multiplicity ____.

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Precalculus

11/05/22

Find the principal needed now to get the given amount; that is, find the present value To get $900 after 2 years at 9% compounded monthly

To get $900 after 2 years at 9% compounded monthly

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Precalculus

11/05/22

Find an equation of the line that passes through the point (−1, 7) and is parallel to the line passing through the points (−2, −3) and (2, 5).

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Precalculus

11/05/22

Find the slope of the line that passes through the pair of points. (If an answer is undefined, enter UNDEFINED.) (a, b) and (c, d)

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Precalculus Calculus

11/04/22

Find the maximum value of the area of a rectangle with perimeter 20

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Precalculus Math Calculus Sat Math

11/04/22

Find the maximum value of xy if 3x+4y=12

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Precalculus Math Calculus Sat Math

11/04/22

given x+y=25, x>0, y>0, Find the maximum value of xy

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Precalculus

11/04/22

Solve the equation cos ( 2 x ) = √ 2 / 2 on the interval [ 0 , 2 π ) in radians. Separate solutions with a comma. If the equation has no solutions, respond with DNE.

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Precalculus

11/04/22

What does the Second Derivative Test tell you about the behavior of f at these critical numbers?

What does the Second Derivative Test tell you about the behavior of f at these critical numbers?From Part (a), we have three critical numbers: x = 0, x = 20/7, and x = 4.At x =... more

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Precalculus

11/04/22

Precalculus: Establish the identity

sin^2x cos^2x =1/4 sin^2(2x)

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Let sint=a​, cost=b​, and tant=c. Write the expression in terms of​ a, b, and c.

A tower that is 105 feet tall casts a shadow 110 feet long. Find the angle of elevation of the sun to the nearest degree.

Find the exact value of each of the six trigonometric functions of θ​, if (4,−8) is a point on the terminal side of angle θ.

Find the length of the arc on a circle of radius r intercepted by a central angle 𝜃. (Round your answer to two decimal places.)

From a point A that is 8.30 meters above level ground, the angle of elevation of the top of a building is 37°50'

The given amount of annual interest is earned from a total of $14,000 invested in two funds paying simple interest.

Determine the cost in dollars of producing x units of the game console for a retailer: C(x) = 80x + 150.

Describe all the x -values at a distance of 20 or less from the number 7

Find sin2x, cos2x, and tan2x if cosx= -1/sqrt5 and x terminates in quadrant 3

Find sin2x, cos2x, and tan2x if cosx= -1/sqrt5 and x terminates in quadrant 3

Find sin2x, cos2x, and tan2x if sinx = -3/sqrt10 and x terminates in quadrant 3.

Manufacturing a molded part

Why or where was the number 9 introduced in the answer to part b?

Find 𝜃 when the range r of a projectile is given by r = 1 32 v02 sin(2𝜃). (Enter your answers as a comma-separated list. Round your answers to one decimal place.)

Find the time beyond which the distance between the weight and equilibrium does not exceed 0.8 ft. (Round your answer to 2 decimal places.)

The polynomial P(x)=5x2(x−4)3(x+9) has degree _____ It has zeros 0,4, and _____ The zero 0 has multiplicity _____ and the zero 4 has multiplicity ______.

Find the principal needed now to get the given amount; that is, find the present value To get $900 after 2 years at 9% compounded monthly

Find an equation of the line that passes through the point (−1, 7) and is parallel to the line passing through the points (−2, −3) and (2, 5).

Find the slope of the line that passes through the pair of points. (If an answer is undefined, enter UNDEFINED.) (a, b) and (c, d)

Find the maximum value of the area of a rectangle with perimeter 20

Find the maximum value of xy if 3x+4y=12

given x+y=25, x>0, y>0, Find the maximum value of xy

Solve the equation cos ( 2 x ) = √ 2 / 2 on the interval [ 0 , 2 π ) in radians. Separate solutions with a comma. If the equation has no solutions, respond with DNE.

What does the Second Derivative Test tell you about the behavior of f at these critical numbers?

Precalculus: Establish the identity

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Let sint=a, cost=b, and tant=c. Write the expression in terms of a, b, and c.

Find the exact value of each of the six trigonometric functions of θ, if (4,−8) is a point on the terminal side of angle θ.

The polynomial P(x)=5x2(x−4)3(x+9) has degree ___ It has zeros 0,4, and _ The zero 0 has multiplicity _ and the zero 4 has multiplicity ____.