2,563 Answered Questions for the topic Maths

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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12/05/19

Problem Solving (Word Problem)
A plane, 50 miles away from its destination, is flying toward the airport at an altitude of 30,500 ft. Later, this same plane is 20 miles from the airport and has descended to an altitude of 18,000... more
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Maths

12/04/19

Katie is 5 feet tall. She casts a 3-foot long shadow at the same times that a flagpole casts an 18-foot long shadow. How tall is the flagpole?
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Maths

12/03/19

Find the equation of a line perpendicular to y - 3x = – 8 that passes through the point (3, 2). (answer in slope-intercept form)
What formula do i use. Please be specific since i am quite dumb even though im in the highest level of math at my school. Thank you so much.
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Maths

12/02/19

When 14 is reduced by 1/3 of a number the result is four find the number
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11/30/19

Logic - Quantifiers / axiom and clausal forms
Question :Consider the following sentences and prove that "Diana will win the game"1.All Players are clever.2.Anyone who is clever and dedicated can play the game well.3.Anyone who is playing the... more
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Maths Algebra 2

11/30/19

Compound interest question
50000 rs 1/2/2 years at 10% to find C.I.
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