2,218 Answered Questions for the topic Pre Calculus

Pre Calculus

03/01/18

A rabbit breeder has 100 rabbits and the population of the rabbit grows at a rate of 6 percent per month.
Write a recursive formula of previous months population.
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Pre Calculus Trigonometry

02/28/18

There are no solutions to 2 cos x/3 + √2 = 0 on [0°, 360°)
There are no solutions to 2 cos x/3 + √2 = 0 on [0°, 360°) true or false and how 
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Pre Calculus Trigonometry

02/28/18

Identify the general solution of 6 sin2 x - 2 = 1 (Answers in radians)
Identify the general solution of 6 sin2 x - 2 = 1 (Answers in radians).That is exactly how the question is written and these are the answers to choose from  a. π/6 + 2nπ; 7π/6 + 2nπ;b. π/4 + 2nπ;... more
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02/25/18

Put the following functions into standard form by completing the square. Use proper notation throughout.
f(x)=x2-3x-10
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02/24/18

Put the following functions into standard form by completing the square. Use proper notation throughout.
  f(x)=3x2+x-10   I dont know what goes next after these two steps:  3(x2+1/3x+(1/6)2-1/36)-10  3((x+1/6)2-1/36)-10                                                                         
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02/23/18

Can someone explain to me how you would establish this identity: cos(a-B)•cos(a+B) = cos^2a - sin^2B
Please include each step so I can follow along
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Pre Calculus Calculus Functions

02/18/18

h(x) = (x^2+2)/(x-5) if x cannot equal 5 and x+6 if x = 5 ; h(5)
Evaluate the piecewise function at the given value of theindependent variable.
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02/15/18

College Algebra Help
Write an equation in slope-intercept form for the line described:x-intercept negative −6, y-intercept 1   The equation of the line is y equals=
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Pre Calculus

02/12/18

Find two numbers whose sum is 50 and whose product is 504
help please
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Pre Calculus

02/07/18

write the formula for the exponential function
write the formula for the exponential function whose initial value is 5 and decreases with a continuos rate of 15%. Then sketch the graph of the function.
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Pre Calculus

02/05/18

Graphing Ellipses
Find the vertices of the ellipse centered at the origin with eccentricity e=1/5 and focus at (-4,0) and (4,0).    (Enter each solution as an ordered pair.)
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Pre Calculus

02/05/18

Graphing Ellipses
Find the eccentricity of the ellipse given by the following equation.   4x^2+20y^2=80   (Do not enter a decimal approximatio. Enter any radical terms or factors in simplest form.)
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Pre Calculus

02/05/18

Graphing Ellipses
Find the eccentricity of the ellipse given by the following equation.    (x^2/40) + (y^2/4) = 1   (Do not enter a decimal approximation. Enter any radical terms or factors in simplest form.)
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Pre Calculus

02/05/18

Graphing Ellipses
Find the length of the major and minor axes of the ellipse.    16x^2+18y^2=288    (Do not enter a decimal approximation. Enter any radical terms or factors in simplest form.)
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Pre Calculus

02/04/18

Find the exact value of the trigonometric expression when sin(u)= -12/13 and cos(v)= -3/5 (Both u and v are in quadrant 3). tan(u+v)
 I have tried to solve using the sum formula but I can't get the correct answer. It has to be as a fraction.
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Pre Calculus

01/31/18

find the exact value of the expression with drawing:
3 sin 2pi/3 - 4 cos 5pi/2
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01/30/18

Find the logarithmic equation that fits the following data/table
Below are the corresponding x and y values for the table X1 = 100, X2 = 50, X3 = 25, X4 = 12.5Y1 = 0, Y2 = 13, Y3 = 26, Y4 = 39 I clearly see that this data has the multiply-add property and is... more
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Pre Calculus

01/29/18

The function is used to convert temperature from Celsius (C) to Fahrenheit (F). The function C(K) = K − 273.15 is used to convert temperature from Kelvin (K) to
"The function" is F(C)= 9/5C +32
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Pre Calculus

01/26/18

Find the partial sum Sn of the geometric sequence that satisfies the given conditions. (Round your answer to four decimal places.)
a2=0.3 a5=0.0375 n=4 
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Pre Calculus

01/26/18

Determine whether the infinite geometric series is convergent or divergent. If it is convergent, find its sum. (If the series is divergent, enter DIVERGENT.)
-49/9+7/3-1+3/7-
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01/24/18

Aaron runs at a constant speed of 10 feet per second. If Aaron is 48 feet from his front door when he starts running down a straight road toward school, how far
Aaron runs at a constant speed of 10 feet per second. If Aaron is 48 feet from his front door when he starts running down a straight road toward school, how far is Aaron from his front door when he... more
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Pre Calculus

01/23/18

17 is 3 times as large as some number. What is the number?
 Write an equation for each of these situations and then solve the equation for the unknown value. Enter the solution to the equation in the answer box.
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Pre Calculus

01/21/18

To get an A in a course, you must have an average of at least 90% on four tests worth 100 points each.
Your scores on the first three tests were 84, 94, and 83. What must you score on the fourth test to get an A in the course?
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Pre Calculus Pre Cal

01/19/18

An architectural engineer is designing a parabolic dome that will be 200 feet in diameter with a maximum height of 50 feet
Find the equation of the cross sectional parábola of the dome
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Pre Calculus Math Algebra Math Help

01/11/18

precalculus 1.7 a maximum value problem
A Rectangular sheet of cardboard measures 19 iches by 22 inches. Square with side length x are cut from each corner to form a box    a. write equation for the volume of the box created    ... more
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