15,254 Answered Questions for the topic precalculus

Precalculus

04/15/23

please help pre call
A large tank contains 5 gallons of water with 6.25 pounds of salt dissolved in it. At the beginning of an experiment, a solution containing 1 pounds of salt per gallon of water is poured into the... more
Follows • 1
Expert Answers •1
Precalculus

04/15/23

Precalculus (Question In description)
The half-life of radioactive strontium-90 is approximately 29 years. In 1965, radioactive strontium-90 was released into the atmosphere during testing of nuclear weapons, and was absorbed into... more
Follows • 2
Expert Answers •1
Precalculus

04/15/23

Find the half-life (in hours) of a radioactive substance that is reduced by 15 15 percent in 75 75 hours.

Follows • 1
Expert Answers •2
Precalculus

04/13/23

How would I go about solving this equation? If possible, please show how you found your answer.
If cos α = 0.975 and sin β = 0.528 with both angles’ terminal rays in Quadrant-I, find the values ofB) sin (α + β)B) cos (β - α)Your answers should be accurate to 4 decimal places.
Follows • 1
Expert Answers •2
Precalculus

04/13/23

Give the general solution for the following trigonometric equation.
-144 cos(y)-85= -1-252-sin(y)/tan(y)#1 cos(y) ="single trig ratio, equal to a constant (as a fraction)"#2 r. a.=38.94#3 Y=38.94+360k where k Є Z or y= -38.94+360 where k Є ZI have some of the... more
Follows • 1
Expert Answers •1
Precalculus

04/13/23

Solve 12 cos^2(w)+14sin(w)-16=0 for all solutions 0 ≤ w <2𝝅
Anobody know how to solve this equation?Give your answers to 2 decimal places, as a list separated by commas.(It should be 4 answers)
Follows • 1
Expert Answers •1
Precalculus Math Calculus

04/13/23

Plz help me with this questions
How to use logarithmic differentiation to determine y′ if cos x = e^y.
Follows • 1
Expert Answers •1
Precalculus Math Calculus

04/13/23

Need Help, thank you
Which of the following is true about the graph of x squared plus x over y minus y squared equals 1 at the point (−2, 1)?a. y ′ does not exist at (−2, 1), and the slope of the tangent line at that... more
Follows • 1
Expert Answers •1
Precalculus

04/13/23

Consider the following. x = 5 − 2t, y = 2 + 5t
Eliminate the parameter and write the resulting rectangular equation whose graph represents the curve.
Follows • 1
Expert Answers •1
Precalculus

04/12/23

In planning her retirement, Liza deposits some money at 2.5% interest, with twice as much deposited at 4.5%. Find the amount deposited at each rate if the total annual interest income is $2070
Follows • 1
Expert Answers •2
Precalculus

04/12/23

pre calc question
4x^3-9x-14Find all zeros of f(x)=4x3-9x-14. Enter the zeros separated by commas. Enter exact value, not decimal approximations.
Follows • 1
Expert Answers •2
Precalculus Math Biology Calculus

04/12/23

Static Equilibrium
Please help me answer the following question, please provide steps, and work. I know the question is specific, but I did not come up with it. Thanks!Question:In the movie, The Matrix Reloaded, Neo... more
Follows • 1
Expert Answers •1
Precalculus

04/11/23

Law of Cosines: Steep mountain inclined 74 degree, rises to a height of 3400ft, cable car is installed to top of mountain 870ft out. Find shortest length of cable needed.
A steep mountain is inclined 74 degree to the horizontal and rises to a height of 3400 ft above the surrounding plain. A cable car is to be installed running to the top of the mountain from a point... more
Follows • 1
Expert Answers •1
Precalculus

04/11/23

Law of Cosines: A triangular parcel of land has sides of lengths 120 feet, 190 feet and 173 feet. See below for the rest of the problem:
a) What is the area of the parcel of land? Round answer to two decimal places. Area = b) If land is valued at $2200 per acre (1 acre is 43,560feet^2), what is the value of the parcel of land? Round... more
Follows • 1
Expert Answers •1
Precalculus

04/11/23

Law of Cosines: A triangular field has sides of lengths 18, 37, 43 yd. Enter your answer as a number; answer should be accurate to 2 decimal places. Find the largest angle in degrees:

Follows • 1
Expert Answers •1
Precalculus

04/11/23

Law of Cosines: A parallelogram has sides of lengths 9 and 4, and one angle is 39°. What is the length of smaller diagonal? What is the length of longer diagonal?

Answer should be entered as a number, accurate to three decimal places.
Follows • 1
Expert Answers •1
Precalculus

04/11/23

Law of Cosines: Pilot flies for 1h 3omin. Heads 10 degrees right, and then flies 2h in new direction. If she maintains constant speed of 610mi/h, how far is she from starting position?
A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10 degrees to the right of her original course, and flies 2 h in the new direction. If she maintains a... more
Follows • 1
Expert Answers •1
Precalculus

04/11/23

Law of Cosines: Steep mountain inclined 74 degree, rises to a height of 3400ft, cable car is installed to top of mountain 880ft out. Find shortest length of cable needed.

A steep mountain is inclined 74 degree to the horizontal and rises to a height of 3400 ft above the surrounding plain. A cable car is to be installed running to the top of the mountain from a point... more
Follows • 1
Expert Answers •1
Precalculus

04/11/23

pre calc homework
f(x)= 2x^2+7x-4/3x^2+4x-15 A y intercept at the point    2) x intercepts at the point(s)    3) Vertical asymptotes at x =    4) Horizontal asymptote at  y = 
Follows • 2
Expert Answers •2
Precalculus

04/11/23

pre calc question
f(x)-= x+5/x+8f^-1(-8)=
Follows • 1
Expert Answers •2
Precalculus

04/11/23

pre calc question
The formula v=√2.6r models the maximum safe speed, v, in miles per hour, at which a car can travel on a curved road with radius of curvature r, in feet. A highway crew measures the radius of... more
Follows • 1
Expert Answers •1
Precalculus

04/11/23

pre calc question
Police use the formula:v=√20Lto estimate the speed of a car, v, in miles per hour, based on the length, L, in feet, of its skid marks when suddenly braking on a dry, asphalt road. At the scene of... more
Follows • 1
Expert Answers •1
Precalculus

04/11/23

pre calc question

f(x)= x+4/x+6f^-1(-3)=
Follows • 1
Expert Answers •1
Precalculus Math Trigonometry

04/11/23

Sine and Cosine Functions
Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature is 50 degrees at midnight and the high and low temperature during the day are 63 and 37... more
Follows • 1
Expert Answers •2
Precalculus Math Trigonometry

04/11/23

Graphs of the Sine and Cosine Functions
A ferris wheel is 35 meters in diameter and boarded from a platform that is 3 meters above the ground. The six o'clock position on the ferris wheel is level with the loading platform. The wheel... more
Follows • 3
Expert Answers •2

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.