2,219 Answered Questions for the topic Pre Calculus

Pre Calculus

08/21/18

Evaluate and simplify f(x)= -4x+5
I need help. I don’t know how to do this. Please respond. I just don’t know how I can simplify it. 
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Pre Calculus Math Precalculus College

08/08/18

please help me with math. i cant figure it out
A trucks wheel has a dimater of 36 iches and travels at 50 miles per hour. what is the angular speed in radians per minute
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Pre Calculus

08/08/18

Determine dimensions of rectangle that will make area maximum
a rectan pen is to be made with 120 m fencing pen is divided into 4 parts and and exist propert fence will be used for one lomg side if x represents width of fence express area A(x) in terms of x... more
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Pre Calculus

07/29/18

Create a rational function with the following properties: has a hole when x=5, has its only vertical asymptote when x=-6, has a horizontal asymptote of y=7
After you have found what what the function is, list it's zeros.
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Pre Calculus

07/26/18

Rewrite with only sin x and cos x. sin 3x I don't know how to do this. Can you help me?
2 sin x cos^2 x + cos x 2 sin x cos^2 x + sin^3 x sin x cos^2 x - sin^3 x + cos^3 x 2 cos^2 x sin x + sin x - 2 sin^3 x   these are the options so the answer has to be one of these
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Pre Calculus

07/24/18

How do I find the rate "R" variable in this exponential growth model?
The area covered by a certain population of bacteria increases according to a continuous exponential growth model . Suppose that a sample culture has an initial area 54.6mm^2 of and an observed... more
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Pre Calculus

07/06/18

Rotate the axes to eliminate the xy-term in the equation. Then write the equation in standard form. 5x2 – 6xy + 5y2 – 12 = 0
i need an answer for this ASAP
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Pre Calculus

07/04/18

The pH reading of a sample of each substance is given. Calculate the hydrogen ion concentration of the substance. (Give your answers in scientific notation, cor
for 5.4 ph value
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Pre Calculus

07/04/18

The burial cloth of an Egyptian mummy is estimated to contain 58% of the carbon-14 it contained originally. How long ago was the mummy buried? (The half-life of
how to solve this
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Pre Calculus

07/04/18

he pH reading of a sample of each substance is given. Calculate the hydrogen ion concentration of the substance. (Give your answers in scientific notation, corr
write in scientific notation
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06/28/18

Help simplifying?
simplify.   2sin2x/2 -1
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06/28/18

Find a polynomial function of lowest degree with rational coefficients that has 3-i, and √7 as some of its zeros
Thank you!
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06/27/18

Given the function value and the quadrant restirction, find θ?
Sin θ=-0.9744   (270°, 360°)
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Pre Calculus Algebra

06/25/18

Construct a polynomial function with the following properties: fifth degree, 4 is a zero of multiplicity 22, −4−4 is the only other zero, leading coefficient i
Construct a polynomial function with the following properties: fifth degree, 4 is a zero of multiplicity 2, −4 is the only other zero, leading coefficient is 2.
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Pre Calculus

06/22/18

Need help finding the missing values and how to solve.
Find the missing values assuming continuously compounded interest. (Round your answers to two decimal places.)   Initial Investment: $200   % Rate: (find) Time to Double: (find)   Amount... more
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Pre Calculus

06/15/18

Average rate of change function
f(x)=x2 -2 find the rate of change on the interval (3,3+h)
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Pre Calculus

06/07/18

Find the zeros (roots) of the following equations. f(x) = 2x5 - 9x4 + 12x3 - 12x2 + 10x - 3 = 0
im taking a class but working at home right now and I just can't pass this assignment  please help
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Pre Calculus Algebra

06/04/18

Does this answer make sense
(1/1+√3) + (1/√3 + √5) + (1/√5+√7) + ... + (1/(√(2n-1)) + (√(2n+1)) = 300   1/[sqrt(2n - 1) + sqrt(2n + 2)] = [sqrt(2n - 1) - sqrt(2n + 1)] / [ sqrt(2n - 1)^2 - sqrt(2n + 1)^2 ] = [ sqrt(2n - 1)... more
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05/31/18

Pre-calc/trig
Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x. f(x) = x-8/x+7 and g(x) = -7x-8/x-1
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Pre Calculus

05/31/18

if sinx=8/17 and pi/2 less than or equal to x less than or equal to pi find the exact value of cos(x/2)
In need help solving this problem can anyone help. This is a preclac question
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Pre Calculus Algebra

05/30/18

Could you please explain how to come to the answer.
Determine the number of solutions (P,Q) for the equation (P/Q) - (Q/P) = ((P+Q) / (PQ)) where P and Q are integers, from -8, to +8 inclusive.
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05/30/18

Evaluate each function for the given value of x?
f = (10,7),(-2,4),(5,3),(4,10)   f(10) = 
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Pre Calculus

05/30/18

1. Simplify: 3x^2-5x-(5x + 8-(8-5x^2 + (3x^2-x+11)))
This is the answer.    Answer: x^2-11x+1 and now, I need the solution how to get the answer :'(
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Pre Calculus

05/29/18

How would I go about finding the possibilitys
At some time between 9:30 and 10 o'clock the triangle determined by the minute hand and the hour hand of the clock is a isosceles triangle. If two equal angles in this triangle are each twice as... more
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05/29/18

Evaluate each function for the given value of x?
x      y -3     3 -1     1 0      0 1      1   f(-1) =   
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