367 Answered Questions for the topic College Math

10/19/17

Solve the systems of equations
4x+3y=-13 3x-5y=12   I have done this problem and cannot figure out what the answer is.
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10/19/17

Find the equation of the line through the points (5,-6) and (-4,-6).
I got y=0/-9x-6 but it does not seem right.
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10/19/17

Find the equation of the line with slope -3 and going through the point (3,11).
I got y=3x+20 and was wondering if it is right.
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College Math College Algebra

10/17/17

what is the domain and range and wether y is a funtion of x? y= - |3x| also what would i put for a list of ordered pairs that satisfy the equation???
please help ive been struggling all day on this homework problem.
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College Math Math College Algebra

10/17/17

what is the range and the domain of " y= x-7 <---and x-7 is in a square root thing
pleaseee help
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10/17/17

Unsure how to solve this word problem and how to get the answer.
  A square and a triangle have the same area. The base of the triangle is 3 feet more than the side length of the square. The height of the triangle is 1 foot less than the base of the triangle.... more
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College Math Percents

10/15/17

-4.60% to a decimal and fraction
provide a step by step 
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College Math Percents

10/15/17

14.37% to a decimal then a fraction
what is it in a decimal and a fraction
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10/11/17

Inverse Functions
If f(x)=(x+2)/(x+9), then f^-1(-4)=?
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10/11/17

One to One Functions
If g(x) is one-to-one and g(-8)=4, then (g(-8))^-1=?
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College Math

10/11/17

my question is attached in the description
A theater group made appearances in two cities. The hotel charge before tax in the second city was $1000 lower than in the first. The tax in the first city was 6%, and the tax in the second city... more
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10/10/17

Transformation: Given the function f(x) PLEASE HELP
om the other.a) f(x) + 2b) f (x + 2)c) f(x) + f (2)Unit 6 DQ Follow-up #1: VariationUnit 6 DQ Follow-up # 1 question: If y varies directly as , explain why doubling x would not cause y to be... more
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College Math Trigonometry

10/10/17

Find cos2x if sin(X)= 9/41.
Can you please show every step? Thanks!
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College Math

10/06/17

how do i get the actual economy shrinkage?
If the national economy shrank at an annual rate of 4% per year for four consecutive years, then the economy shrank by 9% over the four-year period. The actual question is looking for a true or... more
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10/05/17

A newspaper carrier has 5.50 in change.He has 5 more quarters than dimes but 3 times as many nickels as quarters.How many coins or few have type does he have?
Please explain how to do this in the easiest to understand way you can. 
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10/04/17

what is tan(sin^-1(3/7)+cos^-1(4/5))?
I get confused when I have to do the tangent part of the equation.
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10/04/17

How do you solve cos(cos^-1(x)+sin^-1(x))?
Could you please show me your steps? Thank you!
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10/03/17

Find the exact value of cos 15 degrees= sqrt(A)(sqrt(B)+1)/4...what is A and what is B?
I know how to get the answer, but for some reason, they want it in this format and I'm not sure how to do it this way.
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10/03/17

Am I doing this right?
Kai takes off from parking structure 1 at 3:00 PM, driving north. One hour later, Jacob takes off from parking structure 1, too,  but he had south, and his speed is 15 mph more than Kai's. At... more
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10/03/17

How to solve and what's the answer to the problem?
Colombian  coffee beans cost $5.50 per pound, while Peruvian coffee beans cost $4.25 per pound. We want to mix the beans together so as to produce a 40 pound bag, costing $4.60 per pound. How many... more
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09/30/17

Use C to denote cos(x), and express 1+tan^2(x)=______ in terms of C. Similarly, express (1-sinx)(1+sinx)=____ in terms of C.
Hint: For the first part use the definition of the tangent function. For the second part use the third binomial formula: (a+b)(a-b)=a^2-b^2   Can you please show clear steps on how you got this?... more
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09/29/17

implify and write the trigonometric expression in terms of sine and cosine: sec(t)-cos(t) divided by sec(t)=f(t)^2.
Please write in terms of sine and cosine!
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College Math Math Statistics Probability

09/28/17

If ​P(B)=0.4​, P(A|B)=0.5, P(B′​)=0.6, and​ P(A|B′)=0.7, what is P(B|A)?
Statistics probability problem. I could really use some help figuring out how to solve this.
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College Math College Algebra

09/26/17

Factor the following polynomial by grouping. " wya + d - y - wda =
please helppppppppp
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College Math College Algebra

09/26/17

Find the complex conjugate of the complex number. Then find the product of the complex number and its complex conjugate. 3i (3 to power of i)
please help
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