15,254 Answered Questions for the topic precalculus

Precalculus

10/07/22

The length of the diagonal

The width of a rectangle is 9 less than twice it’s length. If the area of the rectangle is 190 cm^2, what is the length of the diagonal?
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Precalculus Math

10/07/22

Problems Involving Conic Sections PARABOLA
A gateway is a parabolic shape whose vertex is 20 𝑓𝑡. from the ground, (0,20), and the width on the ground is 25 𝑓𝑡. What is the maximum height of a vehicle to cross the gateway if it is 7 𝑓𝑡... more
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Precalculus Math Calculus

10/07/22

Find a formula for the quadratic function whose graph has a y-intercept of y=3 and x-intercepts at x=1,8.
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Precalculus Math

10/07/22

Write an equation for a line perpendicular to y= -2x-3 and passing through the point (6,2). y=

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Precalculus Math

10/07/22

Find the point at which the line f(x) = -4x-9 intersects the line g(x) =4x+15.
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Precalculus

10/07/22

find how many panels plant B produce
Two factory plants are making TV panels. Yesterday, Plant A produced 9000 panels. One percent of the panels from Plant A and 6% of the panels from Plant B were defective. How many panels did Plant... more
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Precalculus

10/06/22

If f − 1 ( − 4 ) = − 5 , find f ( − 5 )

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Precalculus Math

10/06/22

Find the equation (in terms of x) of the line through the points (-4,3) and (2,-9).
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Precalculus Math

10/06/22

If f(x) is a linear function, f(-4)=0. and f(3) = -2, find an equation for f(x).

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Precalculus Trigonometry

10/06/22

Periodicity of Trig Functions
Hi! I need help with the following problem: -Find all values of θ for which sin⁡〖θ=0〗 -What pattern do you observe in the values for θ ?-Graph the function 〖f(x)=sin〗⁡x on Desmos.com on the... more
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Precalculus

10/06/22

Given that −5i is a zero, factor the following polynomial function completely. Use the Conjugate Roots Theorem, if applicable. f(x)=x4−13x3+65x2−325x+1000
f(x)=
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Precalculus

10/06/22

Bionomial Theorem
Which term of the expansion of (x+5)^8 contains x^7Term number   
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Precalculus

10/06/22

Find two functions f and g such that (f ∘ g)(x) = h(x). h(x) = 4/(x+2)
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Precalculus

10/06/22

Find the polynomial function f with real coefficients that has the given degree, zeros, and solution point
Degree: 4. Zeros: -3, 1, i. Solution point: f(0) = -12
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Precalculus

10/06/22

How many of each type of ad can the department run each month?
A health insurance company advertises on television, on radio, and in the local newspaper. The marketing department has an advertising budget of $99,700 per month. A television ad costs $2000, a... more
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Precalculus

10/06/22

function operation
find f of g of h of f(x)=sqrt of x, g(x)=x/x-8, h(x)=5sqrtx the 5 goes above the square root sign, not multiplying by 5
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Precalculus Math

10/05/22

Find the equations of the parabola whose directrix x = −4, axis y + 2 = 0, and latus rectum 10.
I need to know how to do it step-by-step.
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Precalculus Math Algebra 1 Algebra 2

10/05/22

Do you know how useful math is?

With out math we won’t have computers, cellphones, video games etc.
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Precalculus Math Calculus

10/04/22

help with precalculus..

A pebble is dropped into a calm pond, causing ripples in the form of concentric circles. The radius (in feet) of the outermost ripple is given by r(t) = 0.3t, where t is time (in seconds) after the... more
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Precalculus Math Calculus

10/04/22

Find the function that represents the total stopping distance T.
The research and development department of an automobile manufacturer has determined that when required to stop quickly to avoid an accident, the distance (in feet) a car travels during the... more
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Precalculus Math Calculus

10/04/22

precalculus help.. step by step or how to please?
Evaluate the indicated function for f(x) = x2 − 1 and g(x) = x − 4 algebraically. (fg)(5t2)
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Precalculus Math Calculus

10/04/22

Evaluate the indicated function for f(x) = x^2 − 1 and g(x) = x − 10 algebraically.

(f/g)(0)
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Precalculus Math Calculus

10/04/22

precalculus help please.
Evaluate the indicated function for f(x) = x2 − 1 and g(x) = x − 8 algebraically. (f − g)(-8)
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Precalculus Math Calculus

10/04/22

college precalculus help.

A gondola tower in an amusement park casts a shadow that is 76 feet long while a sign that is 4 feet tall casts a shadow that is 3 1/2 feet long. Draw a diagram for the situation. Then find the... more
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Precalculus

10/04/22

mixed powder ratios in a bag
If you have 57 grams of substance A and 19 grams of substance B and 19 grams of substance C and 15 grams of substance D and 9 grams of substance E and you mix all of these powders perfectly in a... more
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