04/30/18

Determine the distance from the fire to B.
Lookout station B is located 5 mi due east of station A.  The bearing of a fire from A is S 9°20ʹW and the bearingfrom B is S32°40ʹW. Determine the distance from the fire to B (to the nearest tenth... more
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04/28/18

find all times t>= to 0 in exact form (terms of fractions of pie) using the following formula
i) h=13+4sin33t-6sin23t-6sin3t  h is in cm find all times when t>= to 0 when the height is = to 9cm   ii) What is the first time the height is 9cm? give answer exactly and to 3 decimal places
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04/20/18

A(h,k) lies on the line y+3x=-10. B lies on the line x+y=4. If the origin is the midpoint of AB, find the values of h and k.
Just a coordinate geometry question that has been evading me for a while. I've tried my best but come up short. Any help will be appreciated
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04/16/18

https://ibb.co/bsszbn (Image) The two quads are similar but how to find x and y using the scale ratio and proportions multiplying?
https://ibb.co/bsszbn   image here
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04/15/18

The base of a solid S is the region enclosed by the graph of y=√ln(x-1), the line x=2e, and the x axis. If the cross sections of S perpendicular to the x-axis
The base of a solid S is the region enclosed by the graph of y=√ln(x-1), the line x=2e, and the x-axis. If the cross sections of S perpendicular to the x-axis are squares, then the volume of S... more
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04/14/18

Volume of a Solid Calc AB
If the region enclosed by the y-axis, the line y=2, and the curve y=3√x (cubed rt of x), is revolved about the y-axis, the volume of the solid generated is? Can you solve without a calculator... more
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04/14/18

Full question in details.
An isosceles trapezoid ABCD has bases AD = 17 cm, BC = 5cm, and leg AB = 10cm. A line is drawn through vertex B so that it bisects diagonal AC and intersects AD at point M. Find the area of... more
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04/13/18

Solve (sinx)(tanx) = 3sinx for 0 < x < 2pi. Round your answers to the nearest hundredth of a radian.
a 1.25, 4.39 b 0, 1.25, 3.14, 4.39 c 0, 3.14 d 0, 1.89, 3.14, 5.03
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04/01/18

How do I solve this calculus problem?
Peter can't remember the formula for the area of a circle. He decides to approximate the area of a circle by circumscribing a regular  18 -gon around the circle. If his approximation of the area is... more
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03/30/18

base of a solid in the region bounded by parabola x^2+y=4 and x+y=2. Cross sections of the solid perpendicular to the x-axis are semicircles. what is the volume
The base of a solid in the region bounded by the parabola x2 + y = 4 and the line x + y = 2. Cross sections of the solid perpendicular to the x-axis are semicircles. What is the volume, in cubic... more
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03/28/18

PreCalculus Questions
An airplane has an airspeed of 530 kilometers per hour bearing N30°E. The wind velocity is 20 kilometers per hour in the direction N40°W. By finding the resultant vector representing the path of... more
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03/25/18

Volume and minimum cost
A rectangular box is to have a square base and a volume of 40 ft3. If the material for the base costs $0.37 per square foot, the material for the sides costs $0.05 per square foot, and the material... more
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03/25/18

I’m not sure how to solve this cirlce question
Let the center of a circle that passes through the given points below be represented by (h,k). Use the distance formula to find the 3 radii in terms of h and k. Set these radii equal to create a... more
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03/24/18

Two people start from the same point. One walks east at 9 mi/h and the other walks northeast at 2 mi/h. How fast is the distance between the people changing aft
Two people start from the same point. One walks east at 9 mi/h and the other walks northeast at 2 mi/h. How fast is the distance between the people changing after 15 minutes? (Round your answer to... more
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03/22/18

Determine the unknown angles:
http://d2vlcm61l7u1fs.cloudfront.net/media%2F12d%2F12d54f7d-5828-4549-a92f-cb0a245c8bdb%2FphpHF4iAz.png Given that the indicated lines in this photo are parallel, determine the unknown angles... more
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03/20/18

Find, to the nearest unit, the length of each diagonal
The length of each side of a rhombus is 12. The measure of an angle between two adjacent sides is 40. Find, to the nearest unit, the length of each diagonal
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03/19/18

Air is being pumped into a spherical balloon so that its volume increases at a rate of 50 cm^3 /s .
How fast is the surface area of the balloon increasing when its radius is 14cm? Recall that a ball of radius r has volume V=(4/3)pi r3 and surface area S=4pi r2
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03/19/18

Gravel is being dumped from a conveyor belt at a rate of 50 cubic feet per minute. form right circular cone whose base diameter and height are always the same
How fast is the height of the pile increasing when the pile is 20 feet high? Recall that the volume of a right circular cone with height h and radius of the base r is given by V= (1/3)pi r2 h
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03/14/18

Verify the identity: sin(a+b)/tana+tanb=cosacosb
 Verify the identity.
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03/11/18

The bearing of C from L is 056° and CL = 4.2km. The bearing of C from T is 318° and CT = 9.6km. Calculate the bearing of T from L?
The bearing of C from L is 056° and CL = 4.2km. The bearing of C from T is 318° and CT = 9.6km. Calculate the bearing of T from L?
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03/10/18

In a triangel with vertices at A(-2,5), B(6,1) and C(1,-2). What is the orthocenter and angle between the altitude and median both drawn from the vertex A.
Please show the complete solution.
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03/07/18

Related Rate: Kite Problem
A kite 100 ft above the ground moves horizontally at a speed of 14 ft/s. At what rate is the angle (in radians) between the string and the horizontal decreasing when 200 ft of string have been let... more
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03/05/18

Trigonometry Word Problem
The question:   A man standing atop a watchtower sees a ship at an angle of depression of 15 degrees. He looks at the ship again later and see it at an angle of depression of 30 degrees. If the... more
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03/01/18

A hot air balloon is flying in the sky near a 45-meter high building. The angle of depression of the top and the bottom of the building from the operator are 10
degrees and 22 degrees respectively. Find the horizontal distance between the balloon and the building.   thank youu so much in advance geniuss!💓 y'all helped me alot 😊
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02/27/18

Geometry question
(ii)BC is a chord of a circle with centre O and radius a. The mid-point of BC is M, and MO is extended to A, where OA = 2a. Find, to the nearest minute, the angle BOM so that the triangle ABC has... more
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