15,254 Answered Questions for the topic precalculus

Precalculus

11/27/22

full question below...
A biologist wants to know the width w of a river in order to properly set instruments for studying the pollutants in the water. From point A, the biologist walks upstream 100 feet and sights to... more
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Precalculus

11/27/22

Find the reference angle 𝜃 ' for the special angle 𝜃. (Round your answer to four decimal places.)

𝜃=-7pi/4𝜃 ' =___??much appreciated:)
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Precalculus

11/27/22

Complete the table for a savings account in which interest is compounded continuously. (Round any dollar amount to the nearest cent and any other value to 4 decimal places.)

Complete the table for a savings account in which interest is compounded continuously. (Round any dollar amount to the nearest cent and any other value to 4 decimal places.)initial investment:... more
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Precalculus

11/27/22

Complete the table for a savings account in which interest is compounded continuously. (Round your answers to four decimal places.)

Complete the table for a savings account in which interest is compounded continuously. (Round your answers to four decimal places.)initial investment: $250annual rate (%): ___time to double:... more
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Precalculus

11/27/22

The populations P (in thousands) of a certain city from 2000 through 2008 can be modeled by P = 283.86ekt
The populations P (in thousands) of a certain city from 2000 through 2008 can be modeled by P = 283.86ekt, where t is the year, with t = 0 corresponding to 2000. In 2006, the population was about... more
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Precalculus Trigonometry

11/27/22

Precalc: Prove the Identity: sin2x/1-cos2x = 2csc2x-tanx
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Precalculus

11/27/22

Precalculus: Find length of one side of a triangle through word problem
Solve the problem.A plane takes off from an airport on the bearing S29degreesW. It continues for 20 minutes then changes to bearing S52degreesW and flies for 2 hours 20 minutes on this course then... more
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Precalculus

11/27/22

Precalculus: Determine whether the given information results in one triangle, two triangles, or no triangle at all.
Two sides and an angle are given. Determine whether the given information results in one triangle, two triangles, or no triangle at all. Solve any triangle(s) that results. a=9, b=7, B=15 degrees
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Precalculus

11/27/22

find the domains of following functions

The domain of arccot(x) is .The domain of arcsec(x) is .The range of arccos⁡(x) is .The range of arcsin⁡(x) is .Note that you must enter the appropriate intervals here. Endpoints of intervals: If... more
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Precalculus

11/27/22

find angle theta that corresponds to the function

Use the unit circle, reflection, and symmetry to determine the angle θ that corresponds to the given function value in the given quadrant. If no such angle exists, write DNE. (As always, give exact... more
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Precalculus Math Calculus Chemistry

11/27/22

need help with math

I've been stuck on these problems for a while.Use the given transformation to evaluate the integral. ∫∫R 8xy dA, where R is the region in the first quadrant bounded by the lines y = 1x/3 and y = 2x... more
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Precalculus Trigonometry

11/26/22

Precalc : Find the smallest positive solution of sin2xcos3x = 1-sin3xcos2x
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Precalculus Algebra 1 Trigonometry

11/26/22

Determine the solutions of the equation cosx/1+sinx + 1+sinx/cosx = 2 on the interval 0< x < 2pi
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Precalculus

11/26/22

precalculus: Identify the graph and the polar equation
Identify the graph and the polar equation. r = 4 sin (2 theta)
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Precalculus

11/26/22

Precalculus: rectangular form to polar form
The rectangular coordinates of a point are given. Find the polar coordinates for the point. (−√3, 1)
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Precalculus

11/26/22

Precalculus: triangle word problem
A sailboat leaves port on a bearing of S72 degrees W. After sailing for two hours at 12knots, the boat turns 90 degrees toward the south. After sailing for three hours at 9 knots on this course,... more
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Precalculus

11/26/22

Precalculus: Solve the equation on the interval 0 ≤ 𝜃 < 2𝜋. sin(2theta) + sin theta = 0
Solve the equation on the interval 0 ≤ 𝜃 < 2𝜋. sin(2 theta) + sin theta = 0
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Precalculus

11/26/22

Precalculus: Establish the identity. sin(2theta) tan theta+ cos(2 theta) = 1
Establish the identity. sin(2theta) tan theta+ cos(2 theta) = 1
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Precalculus

11/26/22

precalculus: Establish the identity.
Establish the identity.𝑠𝑒𝑐𝜃− 1/sec𝜃  =𝑠𝑖𝑛𝜃 𝑡𝑎𝑛𝜃
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Precalculus

11/26/22

Precalculus: Find the exact value of the expression. Do not use a calculator
Find the exact value of the expression. Do not use a calculator.  𝑐𝑜𝑠^−1 [𝑐𝑜𝑠 (11𝜋/10)]
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Precalculus

11/26/22

Precalculus: Graph the Tan function
Graph the function. y = tan(1/4 𝑥) + 1
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Precalculus

11/26/22

precalculus: Graph the cosine function
Graph the function. Show at least one period.  y=2cos(−5𝑥+𝜋)
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Precalculus Math Algebra 1 Algebra 2

11/26/22

Find the common ratio and write out the first four terms of the geometric sequence 7^n+2 / 2.
Find the common ratio and write out the first four terms of the geometric sequence7^n+2 / 2.Common Raito is 7Write the following answers as decimal numbers using 2 decimal places.a1 = ______a2=... more
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11/26/22

Find the required annual interest rate to the nearest tenth of a percent for $1200 to grow to $1600 if interest is compounded quarterly for 10 yr.

A=P(1+r/n)^tnI know how to plug it in, but when I work it out I always get the wrong answer.
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Precalculus Math Algebra 1 Algebra 2

11/25/22

Nodin is earning money for a longboard by selling lemonade at the soccer fields. Being a precocious and poorly-supervised 12 year old
Nodin is earning money for a longboard by selling lemonade at the soccer fields. Being a precocious and poorly-supervised 12 year old, Nodin has no transportation and decides to use water from a... more
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