338 Answered Questions for the topic College Math

10/19/17

A total of $12,000 is invested in two funds paying 9% and 11% simple interest. If the yearly and trust is$1180, how much of the $12,000 is invested at each rate? 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. 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. 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. #### 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 College Math Percents 10/15/17 #### -4.60% to a decimal and fraction provide a step by step College Math Percents 10/15/17 #### 14.37% to a decimal then a fraction what is it in a decimal and a fraction 10/11/17 #### Inverse Functions If f(x)=(x+2)/(x+9), then f^-1(-4)=? 10/11/17 #### One to One Functions If g(x) is one-to-one and g(-8)=4, then (g(-8))^-1=? 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

10/10/17

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
College Math Trigonometry

10/10/17

#### Find cos2x if sin(X)= 9/41.

Can you please show every step? Thanks!
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

#### 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.

10/04/17

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.

#### 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

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

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
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.
College Math College Algebra

09/26/17