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Pre Calculus Precalculus

04/07/18

Solve the equation over the interval [0, 2π), stating answer(s) in radians: sin^2 x - 2sinx + 1 = 0

A) π/2 B) 3π/2 C) 2π/3 D) π/2, 3π/2 It would be much appreciated if someone could explain how to get the answer.

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Pre Calculus Precalculus

04/07/18

Find the solutions to sin^2 (x) + cos(x) = 1, keeping 0 ≤ x < 2π

A)x = 0, π/2, 3π/2 B)x = π/2, 3π/2, 2π C)x = 0, −3π/2, 3π/2 D)x = π/6, π/4, π/3 It would be much appreciated if someone could explain how to get the answer.

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Pre Calculus Precalculus Trigonometry Bearings

04/06/18

Ship leaves a port at N50°E at 15 knots, then turns 80° southeast 2 hours later. After three hours at 20 knots, what is the bearing of the ship?

Full question: A a ship leaves a port with a bearing of N50°E at a speed of 15 knots. After 2 hours the ship turns 80° southeast. After three hours at a speed of 20 knots, what is the bearing of... more

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Pre Calculus

04/05/18

if sin of theta equals 3/6 calculate tan of theta

if sin of theta equals 3/6 calculate tan of theta We did not understand

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Pre Calculus Word Problem College Math Help Asap Please

04/03/18

The half life of a radioactive element is 23 days. How long until 21% of the initial amount remains? Include units in your answer?

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Pre Calculus

03/28/18

solve for the variable?

| 2 -1| | 3 4m| = -16 Solve for m?

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Pre Calculus

03/28/18

Solve the following exponential and logarithmic equations. ln x + ln(x+2) = 4

Need help!!!

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Pre Calculus

03/28/18

solve the following exponential and logarithmic equations. 2^4x+1= 3^5x-2

Need Help!!!

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Pre Calculus

03/28/18

write the following expression as a single logarithm. ln(x-1/x)+ ln(x/x+1) - ln(x^2 - 1)

need help!!

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Pre Calculus

03/26/18

what would the doubling time be if the initial investment were $1,000? $10,000? what effect does changing the principal have on the doubling time, and why?

Homework Question for my Pre Calculus class.

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Pre Calculus

03/26/18

consider an investment of $100 invested at 5%, compounded continuously. how would it take for the investor to have $200?

it's homework

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Pre Calculus

03/22/18

This question is a math matrix

Find 1/2 ([5 -2 4 0] + [14 6 -18 9])

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Pre Calculus

03/21/18

Determine if y^2=8-x^2 equation defines y as function of x

Answer yes or no

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Pre Calculus

03/20/18

Use the matrix you found in Part A and perform the matrix operation -5 Row 1 + Row 2 ---> Row 2

Part A matrix solution was [1 2/3 |8/3] [ 5 2 |12]

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Pre Calculus

03/20/18

Use the given matrix and perform the matrix operation (1/3) Row 1

[3 2 |8] [5 2 |12]

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Pre Calculus Precalculus Population

03/13/18

The population P (in thousands) of Pittsburgh, PA from 2000 to 2003 can be modeled by P=2430e^ -0.0029t where t represents the yr, with t=0 corresponds to 2000.

Question: According to the model, when will the population be approximately 2.3 million? Answer: 19 years. Can someone please explain/list the steps on how to find this answer?

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Pre Calculus Precalculus Logarithmic Equation Population

03/13/18

The population P (in thousands) of Pittsburgh, PA from 2000 to 2003 can be modeled by P=2430e^ -0.0029t where t represents the yr, with t=0 corresponds to 2000.

Question: What were the populations of PA in 2000 and 2003? Answer: 2000: 2,430,000, 2003: 2,408,950 Can someone please explain/list to me the steps to finding these answers?

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Pre Calculus Pre Cal

03/10/18

You need 2 pounds of peaches in order to make peach ice cream. You bag of peaches weighs 19 ounces. How many pounds of peaches do you need to purchase?

recall their our 16 ounces in a pound

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Pre Calculus

03/09/18

csc theta=-6/5, tan theta>0

Use the given information to find the exact value of thr trigonometric function cos theta/2

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Pre Calculus

03/09/18

Degree 4; zeros: 5 - 5 i ; - 4 multiplicity 2

enter the polynomial

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Pre Calculus

03/07/18

word problem

Jason and Sheldon are neighbors who work for the same accounting firm. They leave the office at the same time. After t seconds, Jason's distance from the office in meters is given as 4 more than 3... more

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Pre Calculus Trigonometry Trig Trigonometric Identities

03/02/18

Solve on the interval [0, 2pi) (cosx+1)(2cos^2x-3cosx-2)=0

I'm really confused on how to solve this.

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Pre Calculus Trigonometry Trig Trigonometric Identities

03/02/18

How to solve cos(x)(cosx+1)=0

I missed this class so I'm really confused on how to solve this.

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Pre Calculus Trigonometry Trigonometry Identities Trigonometric Functions

03/02/18

Solve on the interval [0,2pi) 1-cos theta = (2 - sqrt 3)/2

I dont quite remember how to solve this, if anyone could help.

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Pre Calculus

03/01/18

A certain car depreciates 15 percent per year. If its initial value is 40000 what will its value be

In 5 years 10 years 20 years 100 years

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Solve the equation over the interval [0, 2π), stating answer(s) in radians: sin^2 x - 2sinx + 1 = 0

Find the solutions to sin^2 (x) + cos(x) = 1, keeping 0 ≤ x < 2π

Ship leaves a port at N50°E at 15 knots, then turns 80° southeast 2 hours later. After three hours at 20 knots, what is the bearing of the ship?

if sin of theta equals 3/6 calculate tan of theta

The half life of a radioactive element is 23 days. How long until 21% of the initial amount remains? Include units in your answer?

solve for the variable?

Solve the following exponential and logarithmic equations. ln x + ln(x+2) = 4

solve the following exponential and logarithmic equations. 2^4x+1= 3^5x-2

write the following expression as a single logarithm. ln(x-1/x)+ ln(x/x+1) - ln(x^2 - 1)

what would the doubling time be if the initial investment were $1,000? $10,000? what effect does changing the principal have on the doubling time, and why?

consider an investment of $100 invested at 5%, compounded continuously. how would it take for the investor to have $200?

This question is a math matrix

Determine if y^2=8-x^2 equation defines y as function of x

Use the matrix you found in Part A and perform the matrix operation -5 Row 1 + Row 2 ---> Row 2

Use the given matrix and perform the matrix operation (1/3) Row 1

The population P (in thousands) of Pittsburgh, PA from 2000 to 2003 can be modeled by P=2430e^ -0.0029t where t represents the yr, with t=0 corresponds to 2000.

The population P (in thousands) of Pittsburgh, PA from 2000 to 2003 can be modeled by P=2430e^ -0.0029t where t represents the yr, with t=0 corresponds to 2000.

You need 2 pounds of peaches in order to make peach ice cream. You bag of peaches weighs 19 ounces. How many pounds of peaches do you need to purchase?

csc theta=-6/5, tan theta>0

Degree​ 4; ​ zeros: 5 - 5 i ; - 4 multiplicity 2

word problem

Solve on the interval [0, 2pi) (cosx+1)(2cos^2x-3cosx-2)=0

How to solve cos(x)(cosx+1)=0

Solve on the interval [0,2pi) 1-cos theta = (2 - sqrt 3)/2

A certain car depreciates 15 percent per year. If its initial value is 40000 what will its value be

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Degree 4; zeros: 5 - 5 i ; - 4 multiplicity 2