TanB+ cotB = secB cscB

It's proving identities ( often found in trigonometry of advanced functions)

Given the linear equation 3x+12y=-15 write an equation that would create a system with no solution

i need help with this equestion because I have no idea What to do so can someone help me on this problem please 

word problem

A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 60% salt and Solution B is 85% salt. She wants to obtain 130 ounces... more

01/19/15

3x-4y=-4 x+3y=-10

Elimination using multiplication. 

01/19/15

Algebra 1a

What is the solution of the system?  y=10x-2 y=-7x+3    A. (5/17,16/17) B. (4/15,16/19) C.(-5/17,16/19) D.(3/17,5/17)

01/19/15

how many gallon of fuel costing $1.15 a gallon and fuel costing $.85 per gallon must be mixed to get 40 gallons of a fuel that cost $1 per gallon

It's a equation how many gallon of fuel costing $1.15 a gallon and fuel costing $.85 per gallon must be mixed to get 40 gallon of a fuel that cost $1 per gallon. 

prove the identity

(secθ-tanθ)^2=2secθtanθ

01/18/15

1.5,0.75,0,-0.75 arithmetic,geometric,or neither

uhfhfhhfhfhfhfhhfhfhfhfhfhfhfhfhfhfhfhfhfhfhfhfhfhfhfhfhfhfhf

the arch of a bridge over a river is 500 m wide and has a maximum height of 25 m. write an equation for the arch

the arch of a bridge over a river is 500 m wide and has a maximum height of 25 m. write an equation for the arch.   part b will a sailboat that has a mast of 16.5 m high fit under the arch at a... more

01/18/15

Standard form word problem

The senior classes at high school a and high school b planned separate trips to New York City. The senior class at high school a rented and filled 1 van and 6 buses with 372 students.high school b... more

01/18/15

need to give an equation of perimeter for length only and area of 3200 for length only

Have an area which is 3200 The length is a 8 feet longer than the width I have these equations that were given me: P=2L+2W, A=L*W, P=L+2W I know that W=L-8     Not sure what equation I need... more

quadratic equations

Select the approximate values of x that are solutions to f(x) = 0, wheref(x) = -7x2 + 7x + 6.   The four options are: {–0.55, 1.55} {-7, 7} {–1.00, –0.86} {–1.17, 1.17}

01/17/15

Find all real solutions

2x/x+1=2x-1/x

01/17/15

Factor each expression

3x^3/2-9x^1/2+6x^-1/2

01/16/15

Rationalize the denominator

√10/√5-2

01/16/15

how do i tell wheater x and y show direct variation. Explain your reasoning. If so, find k. And the problem is 8=xy

I need answers on my math homework. I got half of it done i need help on the other half.

01/16/15

Susan makes 4,435 per month after a 12% tax deduction. What is her salary before the deduction?

I need to answer the above question: Susan makes 4,435 per month after a 12% tax deduction. What is her salary before the deduction?

01/16/15

(b^4+2b^3+b^2)/(b+1)

b4+2b3+b2                b+1

01/16/15

WORD PROBLEMS PLEASE HELP!!! NEED AS SOON AS POSSIBLE.

Canned juice A contains 70% apple juice; canned juice B contains 55% apple juice. How much liters of each should be mixed together to get 12 liters of juice that contains 60 % apple juice?

01/15/15

A new television set was purchased for $436.00 including tax. If the tax was 9%, how much was the television before taxes?

A new television set was purchased for $436.00 including tax. If the tax was 9%, how much was the television before taxes?

24x^8-21x^5-3x^2

This question asks to factor the trinomial completely.  Im in pre calculus class in college, help would be greatly appreciated :)

01/15/15

the 100th term of the arithmetric sequence 1/2,1,3/2,2,...is 49 true or false?

Please help ASAP?

The sum of the squares of two consecutive integers is 9 greater than 8 times the smaller integer (Algebra 1)

The sum of the squares of two consecutive integers is 9 greater than 8 times the smaller integer

A rock concert brought in $432,500 on the sale of 9,500 tickets. If the tickets sold for $35 and $55 each, how many of each type of ticket were sold?

There are numerous questions like this one but I will just say this one for now. The topics of the chapter are linear equations, linear inequalities, and applications. 

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