15,254 Answered Questions for the topic precalculus

Precalculus

11/06/23

precalculus 12 grade
Given f(x)= 3^x which function represents a reflection across the y-axis and horizontal dilation by 1/2g(x0= -1/2(3)^xg(x)= 3^(-2x)g(x)=-2(3)^xg(x)=3^(-1.2x)
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Precalculus

11/06/23

need help solving this
A polynomial function P and its graph are given.P(x) = 3x4 + x3 − 9x2 − 9x − 2A. List all possible rational zeros of P given by the Rational Zeros Theorem. (Enter your answers as a comma-separated... more
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Precalculus

11/06/23

need some help for this
All the real zeros of the given polynomial are integers. Find the zeros. (Enter your answers as a comma-separated list. Enter all answers including repetitions.)P(x) = x3 + 6x2 − 32 Write the... more
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Precalculus

11/06/23

need help solving this
Find all the real zeros of the polynomial. Use the quadratic formula if necessary. (Enter your answers as a comma-separated list. Enter all answers including repetitions.)P(x) = 2x3 + 8x2 + 6x − 4
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Precalculus

11/06/23

need help solving this
Two polynomials P and D are given. Use either synthetic division or long division to divide P(x)by D(x), and express the quotient P(x)⁄D(x)in the form P(x)D(x) = Q(x) + R(xD(x).P(x) = 6x4 − 3x3 +... more
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Precalculus

11/06/23

i need help solving this
The possible rational zeros of P(x) = 14x3 + 5x2 − 18x − 34 
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Precalculus

11/06/23

A cycle road consists of a series of uphill and downhill sections. Lina averaged 20km/hr uphill and 40km/hr downhill. If she completed 35km in 1.3 hours, determine the length of the downhill section?
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Precalculus Math

11/06/23

Parametric Equations: Sine & Cosine
Eliminate the parameter, t, in the parametric equations, x = 6cost and y = 3sint.
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Precalculus

11/06/23

need help solving this
Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x), and express the quotient P(x)/D(x) in the form P(x)D(x) = Q(x) + R(x)D(x).P(x) = x5 + x4 − 6x3 + 5x... more
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Precalculus

11/06/23

need some help solving it
Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x),and express the quotient P(x)/D(x) in the form P(x)D(x)= Q(x) + R(x)D(x).P(x) = x3 + 9x + 8, D(x)... more
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Precalculus

11/06/23

i need help solving this
Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x), and express P in the form P(x) = D(x) · Q(x) + R(x).P(x) = 4x*2 + 5x − 1, D(x) = x + 3
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Precalculus

11/06/23

i need help solving this
Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x), and express P in the form P(x) = D(x) · Q(x) + R(x).P(x) = 3x5 + 9x4 − 9x3 − x − 3 D(x) = x2 − 3
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11/06/23

Calculus help! :) (urgent)
A volcanic cone spews fine particles of rock which land in the surrounding area and cause the size of the cone to increase.(a) Suppose that a volcanologist takes measurements that show that when... more
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Precalculus Math

11/05/23

Find the indicated power using De Moivre's Theorem. (Express your fully simplified answer in the form a + bi.) (1 + i)^7
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11/05/23

calculus urgent help!! i got the answers its wrong pleasse help with detail
A volcanic cone spews fine particles of rock which land in the surrounding area and cause the size of the cone to increase.(a) Suppose that a volcanologist takes measurements that show that when... more
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11/05/23

pleaseee help!!. Calculus!!!...
A large sphere of material is placed in a dissolving liquid.(a) When the radius is 1 m, it is observed to be changing at 7 cm/hour. At that instant, what is the rate at which the sphere's volume is... more
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Precalculus Math

11/05/23

The decibel level of a sound
The decibel level of a sound is given by dB=10log(E/E0), where E0=10^−12watts/m^2 and E is the intensity of the sound.(a) Find the intensity of a 120-decibel sound.E=  watts per square meter.(b)... more
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Precalculus Math

11/05/23

The apparent magnitude (how bright an object appears to the observer) is given by
The apparent magnitude (how bright an object appears to the observer) is given by M=(5/2)log(b0/b) where b is the brightness of the object and b0 is a positive constant. A particular telescope is... more
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Precalculus Math

11/05/23

The pH scale for acidity is defined by pH=−log10[H+]
 The pH scale for acidity is defined by pH=−log10[H+] where [H+] is the concentration of hydrogen ions measured in moles per liter (M). A solution has a pH of 3.9. Calculate the concentration of... more
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11/05/23

calculus help!!
Consider the curve e^x^2 − y = y^7x + 8. Using logarithmic differentiation find dy/dx. Give the answer as a function of both x and y. dy/dx=
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11/05/23

calculusss help urgent
Write the first derivative of the given function.f(x) = x3/2ln(x)f'(x)= x^1/2 + ((3x^1/2)ln(x))/2this is correctFor which x-values does f(x) have horizontal tangents? (Enter your answers as a... more
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11/05/23

calculus helpp!!!!!
A volcanic cone spews fine particles of rock which land in the surrounding area and cause the size of the cone to increase.(a) Suppose that a volcanologist takes measurements that show that when... more
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Expert Answers •1

11/05/23

pleaseee help!!. Calculus!!!...

A large sphere of material is placed in a dissolving liquid.(a) When the radius is 1 m, it is observed to be changing at 7 cm/hour. At that instant, what is the rate at which the sphere's volume is... more
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Expert Answers •1

11/05/23

Calculusss Helppp!! Urgent..please help with this one!!!
Suppose that fluid is leaking from an overhead pipe and spreading in the shape of a circle on the ground. If the radius of the circle is increasing at a rate of 0.5 feet per minute, how fast is the... more
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11/05/23

Calculusss Helppp!! Urgent..please help with this one. i tried every method i know, keep getting it wrong. help out!!!
A road running north to south crosses a road going east to west at the point P. Car A is driving north along the first road, and car B is driving east along the second road. At a particular time... more
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