15,254 Answered Questions for the topic precalculus

Precalculus Calculus

03/06/23

Consider the following functions. f(x) = 2/x , g(x) = 2x + 6
Consider the following functions.f(x) = 2/x , g(x) = 2x + 6A)Find (f ∘ g)(x).B)Find the domain of (f∘ g)(x). (Enter your answer using interval notation.)C)Find (g ∘ f)(x).D)Find the domain... more
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Precalculus

03/06/23

I'm not sure about this. Am I right?
173.The wheels on Devon’s bike have r-inch radii. After the front wheel picks up a tack, Devon rolls another d feet and stops. How far above the ground is the tack? Is the answer:... more
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Precalculus Calculus

03/06/23

Consider the following functions. f(x) = x − 3, g(x) = x^2
Consider the following functions. f(x) = x − 3, g(x) = x^2A) Find (f+ g)(x) :B)Find the domain of (f+ g)(x).C)Find (f − g)(x).D)Find the domain of (f − g)(x)E)Find (fg)(x).F)Find the domain... more
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Precalculus Calculus

03/06/23

Consider the following functions. f(x) = 2/x , g(x) = 2x + 6
Consider the following functions. f(x) = 2/x , g(x) = 2x + 6A)Find (f ∘ g)(x).B)Find the domain of (f∘ g)(x).C)Find (g ∘ f)(x).D)Find the domain of (g ∘ f)(x)E)Find (f ∘ f)(x).F)Find the domain... more
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Precalculus Calculus

03/06/23

Consider the following functions. f(x) = 6x − 5, g(x) = x/2
Consider the following functions. f(x) = 6x − 5, g(x) = x/2A)Find (f ∘ g)(x).B)Find the domain of (f∘ g)(x).C)Find (g ∘ f)(x).D)Find the domain of (g ∘ f)(x)E)Find (f ∘ f)(x).F)Find the domain... more
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Precalculus Calculus

03/06/23

Consider the following functions. f(x)=4/x, g(x)=6/x+6
f(x)=4/x, g(x)=6/x+6A) Find (f + g)(x).B)Find the domain of (f+ g)(x)C) Find (f − g)(x)D)Find the domain of (f − g)(x)E) Find (fg)(x)F)Find the domain of (fg)(xG)Find (f/g)(x)H) Find the domain... more
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Precalculus Calculus

03/06/23

Find f + g, f − g, fg, and f/g and their domains. f(x) = x, g(x) = 5x
Find f + g, f − g, fg, and f/g and their domains.f(x) = x, g(x) = 5xA) Find (f+ g)(x) :B)Find the domain of (f+ g)(x).C)Find (f − g)(x).D)Find the domain of (f − g)(x)E)Find (fg)(x).F)Find the... more
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Precalculus Calculus

03/06/23

Determine whether f and g are inverses of each other. f(x) = 5 − 8x; g(x) = 5 − x/8

f(x) = 5 − 8x;   g(x) = 5 − x/8 A) f and g are inverses of each otherB) f and g are not inverses of each other.  
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Precalculus

03/05/23

Solve the equation.
(Enter your answers as a comma-separated list. Use n as an arbitrary integer. Enter your response in radians.)2 − 4 sin2 x = 0x =
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Precalculus

03/05/23

Pre calculus HW
A 75-Ib weight hangs from a string as shown in the figure. Find the tensions T1 and T2 in the string. (Round your answers to one decimal place.) T1 is 50 degrees and T2 is 30 degrees. I can’t... more
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Precalculus

03/05/23

Pre calculus HW
A straight river flows east at a speed of 12 mi/h. A boater starts at the south shore of the river and heads in a direction 60° from the shore. The motorboat has a speed 24 mi/h relative to the... more
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03/05/23

Closing the gap between graphs

I want to raise the lower graph g(x) toward the upper graph f(x) to make the points of the lower graph as close as possible to those of the upper graph, in other words, to make the graphs "match"... more
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Precalculus

03/05/23

Precalculus: Show the steps to Verify the Identity

(sin2θ - cos2θ +1)/(1-cos^2θ) +1 = (2cscθ + 3secθ)/(secθ)
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Precalculus Math Calculus

03/05/23

Precalculus question
An object with initial temperature 120 F is submerged in large tank of water whose temperature is 60 F. Find a formula for F(t), the temperature of the object after t minutes, if the cooling... more
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Precalculus Math Calculus Chemistry

03/05/23

The half-life of Palladium-100 is 4 days. After 20 days a sample of Palladium-100 has been reduced to a mass of 7 mg. Round your answers to 5 decimal places as needed.
What was the initial mass (in mg) of the sample? _____________What is the mass 5 weeks after the start? _______________(Step by step is much appreciated)
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Precalculus

03/04/23

Pre calculus HW

A straight river flows east at a speed of 12 mi/h. A boater starts at the south shore of the river and heads in a direction 60° from the shore. The motorboat has a speed 24 mi/h relative to the... more
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Precalculus

03/04/23

Pre calculus HW
A 75-Ib weight hangs from a string as shown in the figure. Find the tensions T1 and T2 in the string. (Round your answers to one decimal place.) T1 is 50 degrees and T2 is 30 degrees.
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Precalculus Algebra 2

03/04/23

One account doubles every 2 years. A second account triples every 3 years.

One account doubles every 2 years. A second account triples every 3 years. Assuming the accounts start with the same amount of money, which account is growing more rapidly?
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Precalculus

03/04/23

Pre calculus HW question

Find 2u, -3v, u + v, and 3u - 4v for the given vectors u and v. (Simplify your answers completely.)u= 7i, v= 2i- 6j
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Precalculus

03/04/23

Pre calculus HW question

Write the given vector in terms of i and j.u = (1, 5)u= (0, -3)
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Precalculus Math Calculus Mathematica

03/04/23

(INTERPRETATION) interpret this problem with solution
INTERPRET THIS PROBLEM with solutionA 8-meter ladder is leaning against a house on flat ground. The house is to the left of the ladder. The base of the ladder starts to slide away from the house.... more
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Precalculus

03/03/23

Find the projection of u onto v.
u = 5, 5v = 7, 1proj v u = write u as the sum of the two orthogonal vectors, one of which is proj v uu = proj v u +
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Precalculus Math Algebra 1 Algebra 2

03/03/23

This is copied exactly from the teacher. I know it's probably not realistic, it's just a problem. I need this answer ASAP please
A soup with an internal temperature of 350F was taken off the stove to cool in a 71F room. After 15 minutes, the internal temperature of the soup was 175F. a) Use Newton's Law of cooling to write a... more
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Precalculus Math Algebra 1 Algebra 2

03/03/23

I REALLY NEED HELP ON THIS ASAP PLEASE!
The equation N(t)= 1200/1 + 199e-0.625t models the number of people in a school who have heard a rumor after t days. a) How many people started the rumor? b) To the nearest tenth, how many days... more
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Precalculus Math Algebra 1 Algebra 2

03/03/23

I NEED THIS ASAP PLEASE!
In 1790, Ben Franklin left $4000 with instructions that it go to the city of Philadelphia in 200 years. It was worth about 2 million at that time. Approximate the annual interest rate for the growth.
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