05/05/17

Find the area of a 13-gon with a radius of 23 meters.
Please help -  Explain
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05/03/17

How do I solve this? y^2=-6x
Find the vertex, focus, and directrix of the parabola, and sketch the graph. I think I use this formula but I'm not sure: (y-k)^2=4p(x-h)
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05/03/17

sin2xsinx=cosx
Find the exact solutions of the equation in the interval [0,2π)  
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05/02/17

Find the exact value of sin 20, given that sin0=-4/5 with 0 in quadrant IV
Possible answers are... a -24/25   b. 24/25   c. -7/25   d. 7/25
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05/02/17

A regular pentagon is inscribed in a circle with 10 inch diameter. From the center construct five congruent triangles
a. find the measure of each central angle formed by the triangles b. using trigonometry, find the length of one side of the pentagon c. find the perimeter of the pentagon d. find the area of the... more
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04/27/17

Read Description For Question
What is the measure of an exterior angle of a 25-gon?
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04/27/17

Read Description For Question
Your classmate says, ''If the diagonals of a quadrilateral intersect to form four congruent triangles, then the quadrilateral is always a parallelogram''. How would you correct this statement?
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04/27/17

What is the product of the solutions to the equation 5√x+4 = x+10?
I have solved the problem but don't know what product of solutions mean?   What do I do wit x=0 and x=5?
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04/26/17

Pre-Algebra Averages problem
Justin threw a football as far as he could 3 times and had an average of 49 yards. He threw it again and his new average was 37 yards. How far was his fourth throw?
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04/26/17

In a rhombus, the difference of the measures of the two angles between a side and the diagonals is 32°. What are the measures of the angles of the rhombus?
Please help me. I don't understand what the question means.
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04/26/17

two times the reciprocal of a number equals 40 times the reciprocal of 50. Find the number
two times the reciprocal of a number equals 40 times the reciprocal of 50. Find the number
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04/26/17

Alice drives to Alabama at a rate of 60mph. She drives him at a rated of 40mph. If the total trip takes 5 hours, how long does it take her to drive back home
Alice drives to Alabama at a rate of 60mph. She drives him at a rated of 40mph. If the total trip takes 5 hours, how long does it take her to drive back home
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04/25/17

linear equations
The sum of two numbers is 1717, and their difference is 11. Let x be the larger number and y be the smaller number.(a) Write the system of equations for the problem.(b) Find the unknown numbers by... more
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04/25/17

Trig Identities
sin(x) = -sin(2x) + sin(5x)   How do I solve for ALL solutions?
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04/25/17

lisa walks 15 feet from the base of the tree.
lisa walks 15 feet from the base of the tree. She measures an angle of elevation from the ground to the nest of 62. Find how high the nest is above the ground, to the nearest foot.
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04/25/17

What is the policecar's average speed for the total trip?
physics question:   A police car drives 230 km with a constant speed of 120km/h and another 170 km with a constant speed of 60km/h.
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04/25/17

How to solve (sinx/1-cscx)-(sinx/1+cscx)= -2cot^2x?
I need to set the problem sides equal to each other. A step-by-step guide would be helpful. My entire class doesn't understand it.
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04/24/17

Rebecca picked 5/8 of a bushel of blueberries yesterday. Today, she picked 5/7 of a bushel of blueberries. How much more did she pick today than yesterday?
I need to know how many more she picked yesterday than today? 
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04/24/17

Make the trigonometric substitution x = a tan θ for −π/2 < θ < π/2 and a > 0
Simplify the resulting expression: x^2/sqrt(a^2+x^2).   I actually have no idea how to go about solving this at all. If anyone could be kind enough to explain this to me step by step, I'll be... more
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04/23/17

The track at east side high school is 440 yards long.it took maya10 minutes to jog around the track 4 times. Finds her speed in miles per hour.
Choose the appropriate forumal. Includ the unit in your answer.
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04/23/17

What is an equivalent expression to 42x - 7y
How do I simply 42x -7y
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04/22/17

Word Problem
The area of a square can be tripled by increasing its length by 6 centimeters and increasing its width by 3 centimeters. What is the length of the side of the square?
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04/21/17

A bag contains 3 red marbles and 5 blue marbles. Find the probability of drawling a blue marble, keeping it, and drawling another blue marble.
3 red marbles and 5 blue marbles
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04/21/17

Tourists covered 640 km for a 4-hour ride by car and a 7-hour ride by train. What is the speed of the train, if it is 5 km greater than the speed of the car?
 How is this possible?
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04/20/17

The square pyramid has base edge length 14 in. The height of the pyramid is 24 in. Find the surface area of the square pyramid.
I can't figure this out for a math problem for school
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