1,084 Answered Questions for the topic ACT Math

12/28/19

Simplify this Sine Problem
cos(pi/2 - x)[sec(pi/2 - x)-cos(pi/2 - x)]
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12/27/19

Simplify the Problem
cos(pi/2 - x)[sec(pi/2 - x)-cos(pi/2 - x)]
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12/27/19

Sec Csc Problem
Which expression is not equal to the following: sec^2(x)csc^2(x)A. sec^2(x) + csc^2(x)B. cos^2(x) + sin^2(x)C. sec^2(x) + sec^2(x) cot^2(x)D. (1+ tan^2(x)) csc^2(x)
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12/27/19

Sine Function Problem
a sine function has an amplitude of 4/7, period of 2pi, horizontal shift of -3pi, and a vertical shift of 1. what is the y-value of the positive function at x=pi/2?
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12/27/19

Find the Horizontal Shift

y=-2cos(1/4x- pi/2)Find the horizontal shift of this problem.
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12/27/19

Graphing Question For Trig
Which of the following points is not on the graph of y= cot x?A. (5pi/6, -sqrt(3))B. (7pi/4, -1)C. (4pi/3, sqrt(3))
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12/26/19

Cosine Problem for Trig
if y= -cos x, what x-value corresponds to a y-value of 1 between 0 and 2 pi
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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

Find the Quotient
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

polynomial function problem
given : p(x) = x(x+5)(x+3)(x-2)2what degree is the polynomial function?what is the end behavior of p(x)?
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12/23/19

Polynomial problems
Find all real zeros of the polynomials and determine the multiplicity of each. (solve by factoring)f(x) = x3 - 6x2 - 9x + 54f(x) = x4 + 5x3 + 6x2
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12/16/19

Please help me I really need to figure this question out.
An 18-foot ribbon is attached to the top of a pole and is located on the ground 10 feet away from the base of the pole. Suppose Mateo has a second ribbon that will be located an additional 23 feet... more
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Act Math

12/13/19

At a concession​ stand, seven hot dog and two hamburger cost ​$10.50​; two hot dog and seven hamburger cost ​$14.25. Find the cost of one hot dog and the cost of one hamburger.
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Act Math

12/13/19

An airplane takes 3 hours to travel a distance of 1320 miles with the wind. The return trip takes 4 hours against the wind. Find the speed of the plane in still air and the speed of the wind.
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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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12/06/19

Word Problem Solving
A ship's bearing is 240°. If a submarine, due east of the ship, shoots a torpedo traveling 5 times as fast as the ship, what angle should the submarine fire the torpedo in order to hit the ship?
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12/06/19

Finding an inverse function
Determine whether function has an inverse function, if it does, find the inverse function. f(x) = x4f(x) = 3x + 5
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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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11/27/19

Problem Solving (Word Problem)
The number of hours of daylight on the summer solstice (the 172nd day of the year) is 15.3 and the number of hours of daylight on the winter solstice (the 355th day of the year) is 9.1. Complete... more
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11/26/19

How do I develop a function that models the bacteria in relation to time? (data provided)
Time (hours) 1 2 3 4 5 Bacteria weight (grams) 11.0 19.7 34.6 61.7 117.8
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