2,218 Answered Questions for the topic Pre Calculus

Pre Calculus Math Calculus Geometry

09/27/18

please help me solve the question !!
Given two points A (1,2,3), B (7,6,5), let S be the set of all points in (x, y)–plane such that PA is orthogonal to PB, then >>   (a) S is empty     (b) S contains exactly one point     ... more
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Pre Calculus Math Geometry Mathematics

09/27/18

please help me solve the question !!
How many lines on the coordinate plane that has distance 1 to the origin O(0,0) and distance 2 to the point A(3,0)  ??   (a) 1    (b) 2    (c) 3    (d) 4    (e) infinitely many     
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Pre Calculus

09/24/18

How to simplify (x+y)^6
A question
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09/24/18

Horizontal shrink / stretch
Write the formula for f(x), if the graph of f can be obtained from the graph of y = g(x) by shrink horizontally by a factor of 5 then shift left 3 units The equation should be  f(x) = g(5(x+3))... more
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Pre Calculus

09/17/18

vertex form of 7x^2 − 14x + 1
find standard form 
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Pre Calculus College Algebra

09/14/18

Graph the polynomial function
Graph the polynomial function. Label all key points. 1. p(x)=x^2(2x+7)(x-8)^3 a.) from the leading coefficient test, describe the end behavio. b.) find the zeros and list the multiplicity of... more
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Pre Calculus Calculus 1

09/13/18

Find if the following graphs are symmetric with respect to the axes or the origin
A. y=2x B. y=3x C. y=x^4-x^2 D. y=x^4-x
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Pre Calculus

09/11/18

Solve the system by using the technique of ‘elimination’ 7x+6y=2 -28x-24y=-8
A An infinite number of solutions exist. B x=4/7 y=-1/3   C X=1/7 y=1/6    D x=0 y=0
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Pre Calculus

09/10/18

Determine ƒ(a + h) for ƒ(x) = 2x^3
ƒ(a + h) = 2(a3 + 3a2h + 3ah2 + h3) ƒ(a + h) = 2(a3 + a2h + ah2 + h3) ƒ(a + h) = 8(a3 + 3a2h + 3ah2 + h3) ƒ(a + h) = 8(a3 + h3)
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Pre Calculus

09/10/18

Determine f(2) where f(X)= x+1/4x-2
F(2)= 3/8 F(2)= -3/8 F(2)= 2 F(2)= 1/2
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09/09/18

Mathematical models: constructing an open box
An open box with a square base to be made of a square piece of cardboard 24 inches on 24 inches on a side by cutting out a square from each corner an turning up the sides. Express the volume v of... more
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09/09/18

Mathematical Models
Volume of a cylinder: The volume of a right circular cylinder of height h and radius r is V=(Pi)r^2h. If the height is twice the radius, express the volume V as a function of r 
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Pre Calculus

09/05/18

Determine if the equation x2 – y = 1 defines y as a function of x.
A   Yes. One output results in one input. B   No. At least one output results in two inputs. C   Yes. One input results in one output. D   No. At least one input results in two outputs.
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Pre Calculus

09/05/18

Determine ƒ(–a) where ƒ(x) = x2– 6x and simplify.
 A  ƒ(–a) = –a2 + 6a  B  ƒ(–a) = a2 – 6a  C  ƒ(–a) = a2 + 6a  D   ƒ(–a) = –a2 – 6a
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Pre Calculus

09/03/18

5-12x 10-12x x in standard form
Box measures 5-12x wide by 10-12x long by x in height
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Pre Calculus

08/31/18

find the length of the antenna.
A vertical antenna is mounted atop a 45 foot pole. From a point on level ground 74 feet from the base of the pole, the antenna subtends an angle of 10.6. Find the length of the antenna.  
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Pre Calculus Algebra

08/31/18

investment (pre-cal)
Kate invested a total of 8000$ part at 5% and part at 6% simple interest. at the end of year 1, she made 454$ interest. how much was invested into each rate?
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Pre Calculus

08/30/18

6(x+h)^3 how to factor this
Question is actually algebra 2, but Ive forgotten how to factor this. The context is finding the difference quotient. F(X) = 6x^3, after plugging in (x+h) in the x spot we have 6(x+h)^3, this then... more
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Pre Calculus

08/28/18

Assume (-2,3) is a point on the graph of f. What are the coordinates if y=-f(x/2)
Assume (-2,3) is a point on the graph of f. What are the coordinates if y=-f(x/2)
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Pre Calculus

08/28/18

Find the domain of the function: f (x) = 1+4x / 2x − 1
Find the domain of the function
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Pre Calculus Calculus 1

08/27/18

How do I solve this problem on absolute values?
A. Find a value of a for which |-a| does not equal a   B. For what values of a does |-a|=a hold true?
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Pre Calculus

08/26/18

see description
If g is a decreasing function on an interval including -and 3, then which is a larger number f(-1) and f(3)? Explain your answer 
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Pre Calculus

08/26/18

look at description for math related question
Hi I'm looking at a graph and trying to find the interval on which f is increasing/decreasing/constant. There are open and closed circles for certain points on the graph. When listing the... more
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Pre Calculus

08/24/18

How do you simplify sinxcosx using Trigonometric Identities?
I'm doing a problem where I have to prove the Trigonometric equation, (sinx)(tanx cosx-cotx cosx)=1-2cos²x and I'm distributing the sinx and here's how it looks so far: sinx tanx sinx cosx - sinx... more
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Pre Calculus

08/22/18

Find all real values of x for which f(x) = 0. f(x) = x3 − x2 − 3x + 3
 can you help me please i really need it?
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