04/06/22

Could someone help me with this max revenue question? I keep getting the wrong answer and I don’t know why
A bus service carries 10,000 people daily between Cybervelle and Steeptown, and the company has space to serve up to 15,000 people per day. The cost to ride the bus is $20. Market research shows... more
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04/06/22

Could someone help me with this max/min word problem?
A messenger is to go ashore from a ship 13 km offshore and deliver a message to a camp which is 32 km up the beach from the point nearest the ship. He can go 24 km/h by boat and will be met by a... more
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04/04/22

Square root and cube root functions
What is the end behavior of the function ? As x → –∞, f(x) → –∞, and as x → ∞, f(x) → ∞. As x → –∞, f(x) → ∞, and as x → ∞, f(x) → –∞. As x → –∞, f(x) → 0, and as x → ∞, f(x) → 0. As x → 0, f(x) →... more
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03/09/22

Solving for X in a hexagon
I have a hexagon so 6 sides, and I need to solve for X. The numbers I have are: 5x-6, 4x+14, 7x, 8x-8, 6x, and 120. How do I solve for X?
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03/09/22

find the lenth of cable needed for cable car to reach top of mountain from a point up the mountain

A steep mountain is inclined 78 degrees from the horizontal and rises 3000 vertical feet above the surrounding plain. A cable car is to be installed that will travel from a point 860 ft from the... more
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03/07/22

right triangle has a 24-cm perimeter, find all three side lengths of triangle.
A right triangle has a 24-cm perimeter, and its hypotenuse is twice as long as its shorter leg. To the nearest tenth of a cm, find the lengths of all three sides of this triangle.Hypotenuse = 2x,... more
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03/07/22

What does this sentry theorem say, and why has it been given this name?
I know the sentry theorem says that "The sum of the exterior angles of any polygon — one at each vertex — is 360 degrees."Can someone help me to understand why it has been given this name?
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03/06/22

Basic math question about compounded interest
Bank A provides a curious financial instrument: a savings account that yields a complex interest rate r = -1 + 2i per year (where i is the imaginary unit, satisfying i² = -1). John deposited U$1 in... more
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03/06/22

suppose df/dx=4x^1/2. If f(4)=21, then f(x)=?
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03/05/22

Find the moon and sun diameter

Diameters of the moon and the sun, viewed from Earth, both occupy about (1/2)° of the horizon. The distance to the moon is 390,000 km, and the distance to the sun is 150 million km. Find... more
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03/03/22

Find to one decimal place to Proxima Centauri distance in parsecs.
Astronomers measure large distances in parsecs. (One parsec is the radius of a circle for which an arc of angle 1/3600° has length equal to the distance from Earth to the sun, about 150 million... more
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02/25/22

This is easy but I am getting something mixed up
All edges of a cube are expanding at a rate of 7 centimeters per second.(a)How fast is the surface area changing when each edge is 9 centimeters? (b)How fast is the surface area changing when each... more
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02/23/22

Geometry Help!!!
Sammy plots the point (5, -12) on a coordinate grid. He reflects the point over the y-axis, and then over the x-axis. What are the coordinates of the new reflected point?
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02/23/22

Find all relative extrema of the function. Use a graphing utility to verify your result. (If an answer does not exist, enter DNE.)
Find all relative extrema of the function. Use a graphing utility to verify your result. (If an answer does not exist, enter DNE.)y = ln(3 + 9x^2 − x^3)
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02/22/22

Please help! Thanks!

If 8-3z=16+5z, then what is the value of 4z?a. -16b. -4c. 1d. 12
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02/22/22

Sketch the angle in standard position. -225 degrees
Sketch the angle in standard position. -225 degrees
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02/22/22

Determine the maximum/minimum point(s) for y = sin 2x - cos x -4x on the interval 0 < x < 2π. The value(s) should be in expressed in radians
i need help, what are the steps?
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02/22/22

Find the intervals of increasing/decreasing for the function f(x) = x^3 e^x
i need help, what are the steps?
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02/22/22

Application of Vectors
A sailboat captain has set her course due west at a speed of 6 meters per second. The wind is blowing due north at a rate of 2 meters per second. The direction of the sailboat's travel, considering... more
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02/22/22

What is the length of the ramp?
A ramp for the disabled is to be constructed to allow access to a building entrance. The angle of elevation must be 12°.The height at the end of the ramp must be 14 inches off the ground.What must... more
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02/22/22

Find the equation of the tangent to the curve y = cos^2 x when x = pi/3 Your solution should use radian measure.
i got the equationy = 0.9996is this correct? thanks
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02/22/22

Find the missing length of side b. Area =28.19in, <C =110°,a = 6in
Find the missing length of side b. Area =28.19in, <C =110°,a = 6in
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02/22/22

Find the integral

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02/22/22

You are standing 40 meters from the base of a tree that is leaning 8° from the vertical away from you.The angle of elevation from your feet to the top of the tree is 20°. Find the height of the tree.
You are standing 40 meters from the base of a tree that is leaning 8° from the vertical away from you.The angle of elevation from your feet to the top of the tree is 20°. Find the height of the tree.
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02/21/22

circular functions (2)
For items 11 to 15, use the information that sin t = and sec t 0 to find each of the following: tan t= cos t= csc t= cot t= sec t=
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