2,575 Answered Questions for the topic Maths

12/26/19

Please Help With This Trig Problem
5(cos 220° + i sin 220°)/2(cos 115° + i sin 115°)A. 5/2(cos 105° + i sin 105°)B. 2/5(cos 105° + i sin 105°)C. 5/2(cos 335° + i sin 335°)D. 10(cos 335° + i sin 335°)
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12/25/19

Trig Problem Please Help
A car travels in the direction of 135°. What is its compass heading?(In Degrees)When I did the problem, I got 315°. Is that correct?
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12/25/19

Word Problem Please Help
An airplane flies 200 km due west from city A to city B and then 300 km in the direction of 30.0∘ north of west from city B to city C. How far is city C from city A?
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12/23/19

Division theorem by induction.
Help! How can I prove the division theorme for positive integers using induction?
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12/20/19

geometry/trigonometry
1.    Provide reasons for the proof.Two parallel lines a and b cut by a transversal c is shown Statements Reasons 1,  a||b 1. Given 2. 2. 3. 3. 4. 1 ... more
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Maths

12/18/19

Symbol runs for laps around the track in six minutes how many minutes per lap is that
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12/17/19

Precalc question
The populations of termites and spiders in a certain house are growing exponentially. The house contains 100 termites the day you move in. After 4 days, the house contains 200 termites. Three days... more
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Maths Algebra

12/16/19

My rectangle has a 180mm perimeter, the width is half the length. What is the area?

I want an explanation, let 'L' be length and 'W' be width.
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12/16/19

Lagrange multiplier question(Please help)
Show that the function f(x,y) = 8(x^2)y, subject to 3x - y = 9, does not have an absolute minimum or maximum.(hint: Solve the constraint for y and substitute into f.)Hmm. even though there is a... more
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12/14/19

precalc question
A cancerous cell lacks normal biological growth regulation and can divide continuously. Suppose a single mouse skin cell is cancerous and its mitotic cell cycle (the time for the cell to divide... more
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12/13/19

precalc question
The cities of Abnarca and Bonipto have populations that are growing exponentially. In 1980, Abnarca had a population of 25,000 people. In 1990, its population was 29,000. Bonipto had a population... more
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12/12/19

Precalc question
In 1987, the population of Mexico was estimated at 82 million people, with an annual growth rate of 2.5%. The 1987 population of the United States was estimated at 244 million with an annual growth... more
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12/12/19

precalc question
A ship embarked on a long voyage. At the start of the voyage, there were 500 ants in the cargo hold of the ship. One week into the voyage, there were 800 ants. Suppose the population of ants is an... more
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12/12/19

Precalc question
Your Grandfather purchased a house for $55,000 in 1952 and it has increased in value according to a function y = v(x), where x is the number of years owned. These questions probe the future value... more
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12/12/19

Precalc question
As light from the surface penetrates water, its intensity is diminished. In the clear waters of the Caribbean, the intensity is decreased by 15 percent for every 3 meters of depth. Thus, the... more
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12/12/19

Precalc question
A ship embarked on a long voyage. At the start of the voyage, there were 500 ants in the cargo hold of the ship. One week into the voyage, there were 800 ants. Suppose the population of ants is an... more
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Expert Answers •1

12/12/19

Precalc question
In 1987, the population of Mexico was estimated at 82 million people, with an annual growth rate of 2.5%. The 1987 population of the United States was estimated at 244 million with an annual growth... more
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Maths Probability

12/11/19

A bag contains 100 black balls
A bag contains 100 black balls. A ball is randomly picked from the bag and if it's a black ball , two white balls are added in its place and if its a white ball it is kept back. After how many... more
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12/11/19

Have a test on this please help me!!!
According to the bureau of labor statistics, about 10% of the civilian labor force (both men and women) were 20 to 24 years of age in 1996. Using this data and the formula for the binomial... more
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12/11/19

Which observation has the higher z-score? I : x= 136.3 ; x= 70.5 ; s= 15.3 II : x = 23.5 ; x= 11.7; s= 2.4 (a) I (b) II (c) neither (d) cannot be determined
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12/07/19

Word Problem Solving Equation
A sound wave is given the following equation:y= 8 sin(512πt) where t= time in seconds.How many cycles will occur between t=2 and t=3.5 seconds?
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12/07/19

Math Equation Help

Find the vertical shift.y=0.9(sin(pi/3-x)+0.01)
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12/06/19

Problem Solving Equation
A sound wave has an equation. y= 7 sin(58πt) where t= time in seconds. What is the frequency?
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12/06/19

World Problem Solving

A mouse wanders through a maze 3 feet East, 4 feet North, 2 feet East, & then 5 feet North. How far is the mouse from its starting point?Round to the nearest tenth.
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12/05/19

Writing complex polynomials
Write a polynomial with a=-2 with solutions of -5 (multiplicity 3) and a complex solution at +/- 3i
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