2,195 Answered Questions for the topic Pre Calculus

09/07/16

Pre-Calculus: Writing Linear Equations
Write an equation in slope-intercept form of the line that has slope -4 and passes through the point at (2,-2).
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Pre Calculus

09/06/16

idk how to solve this really need help
A ladder l = 21 ft long is leaning against thewall of a house. The base of the ladder ispulled away from the wall at a rate of 2.1 ft/s,and the top slides down the wall. Considerthe triangle formed... more
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Pre Calculus

09/06/16

Neil believes the two arcs subtwnded bt a 195 degree angle and by a -165 degree angle in a circle with a radius of 10 inches will have the same length. Explain
Neil believes the two arcs subtwnded bt a 195 degree angle and by a -165 degree angle in a circle with a radius of 10 inches will have the same length. Explain neils mistake
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Pre Calculus

09/05/16

G(x)=x/x^2-5x
Find the domain of the function 
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Pre Calculus

09/05/16

I don't know where to start I know the negatives need to change places so they are not negative anymore that's it.
(x-1/2 Y4/3)0 times X-3Y0)2/3÷X2/3Y-3/4
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Pre Calculus

09/05/16

how would I do 2 divided by the cube root of 20
2÷³√20
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Pre Calculus

08/28/16

2 trucks leave a warehouse at the same time. 1 travels east at 55mi/hr, and the other travels due west at 47mi/hr. After how many hours will the 2 trucks be
2 trucks leave a warehouse at the same time. 1 travels east at 55mi/hr, and the other travels due west at 47mi/hr. After how many hours will the 2 trucks be 714 miles apart   
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Pre Calculus

08/28/16

Matt and cara take eight hours to mow the lawn. Cara alone takes four times as long as Matt. How long does Matt take alone?
Matt and cara, working together, can mow a lawn in eight hours. Working alone, cara takes four times as long as Matt. How long does it take Matt to mow the lawn alone?
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Pre Calculus

08/27/16

Write the equation of the line which passes through (3, –5) and is perpendicular to the line with equation 3y – x = –5.
Please help me asap
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Pre Calculus

08/25/16

g(x) = x / x^2 + x - 8
what is the domain of this equation 
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Pre Calculus

08/24/16

If f is a function defined by the equation y=?f(x), then x is called the what?
 If f is a function defined by the equation y=?f(x), then x is called the
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Pre Calculus Precalculus Math Help

08/23/16

How do you find tangent,csc,sec, and cot? Please list examples.... thank you!
 Can you list examples using the unit circle thanks!
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Pre Calculus Algebra 1 Math Help

08/23/16

Questions down below... These are kinda thinking problems I've tired to figure it out but have had no luck! Please help thanks!
Question #1 Place only addition signs between seven 7's so that their sum is 175   Question #2 The digits 1 to 9 are written in consecutive order. Use the four basic operations: Addition,... more
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Pre Calculus

08/12/16

Pre cal help URGENT
Which of the following is a solution to 3tanθ=√3  ?   π/6   -π/2   π/3   π/2
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Pre Calculus

07/25/16

find the concentration of hydrogen ions in each cleaner and use it to compare the hydrogen concentrations of the two cleaners
The pH of formula 409 glass and surface cleaner is 9.5, while the pH of Fantastik is 10.0 find the concentration of hydrogen ions in each cleaner and use it to compare the hydrogen concentrations... more
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Pre Calculus

07/19/16

The height of an object thrown upward from the surface of a planet is given by the function s(t) = -2t2 + 28t, where t is the time in seconds and s(t) is the he
i do not understand how to do this problem. it is pre calculus
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Pre Calculus Trigonometry

07/13/16

sin(4x)-sin(6x)=0
Solve for 0<x<2pi  
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Pre Calculus

06/27/16

HELP ME PLEASE
Absolute values inequalities are like compound inequalties. A compound inequaltity cosists of 2 inequalities possibly separated by a word. A conjunction compound inequaltiy uses the word AND while... more
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06/20/16

if the radius of the circle in the figure is 20 cm and length equals 85 cm, what is the radian measure of angle
If the radius of the circle in the figure is 20 cm and length equals 85 cm, what is the radian measure of angle?
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Pre Calculus Trigonometry Angles Boat

06/14/16

Trigonometry
from the top of a building a person spots two boats out on the lake. the angle of depression from the person to one of the boats is 48 degrees, the angle of depression from the person to the other... more
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06/12/16

pre cal question
Write the equation of a line through the given points in standard form Ax+By=C. (-6,1) and (-1,4)
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Pre Calculus

06/07/16

solve for k: (1/3)(e^3/2x) +(4/9k)(e^3/2k)=0
1/3e e=2.718281828  
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Pre Calculus

06/06/16

Solving word problem given angles of elevation and finding heivht
The First State Bank and a hospital are 40 meters apart. From a window in the bank, the angle of elevation to the top of the hospital is 77 degrees. From the same window the angle of depression to... more
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Pre Calculus

06/06/16

Solving word problems involving angles of elevation, angles and two ladders
a ladder 15.3 meters long can be placed so that it will reach a window on abuilding on one side of the street. at this point it forms a 55 degree with the horizontal. if the ladder is tipped the... more
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06/06/16

Need help with these logarithms questions! Thanks
1. Write as a single log 2logx - log11y + 1/2 log 11z   2. Evaluate 3log74 -2log78   3. Expand logw(12a3/b2)   thank you soo much!!
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