04/08/16

I dont know the answer:( Can someone please help?

Let f(x) = x^2 - 1 and g(x) = 2x. What is (g ? f)(4), or g(f(4))?     Let f(x) = 3x and g(x) = x^2 + 2. What is (g ? f)(-3), or g(f(-3))?

04/08/16

I really need help with these three questions!

Let f(x) = x^3 - 1 and g(x) = 3x. What is (g ? f)(-2), or g(f(-2))?  Let f(x) = 3x and g(x) = x^2 + 2. What is (g ? f)(-3), or g(f(-3))? Let f(x) = x^2 - 1 and g(x) = 2x. What is (g ? f)(4), or... more

04/07/16

I need help with these last three questions!!!!!

If f(x) = x^2 + 2x + 1 and g(x) = x + 1, then what is f(x) / g(x), and what is the domain?  x + 1 [Domain: All real x except -1] x - 1 [Domain: All real x except -1] x + 1 [Domain: All real x... more

04/06/16

I REALLY need help with these three questions!

 If f(x) = x^2 + 2x + 1 and g(x) = x + 1, then what is f(x) / g(x), and what is the domain?  A: x + 1 [Domain: All real x except -1] B: x - 1 [Domain: All real x except -1] C: x + 1 [Domain: All... more

04/05/16

I need help with these 3 questions!!!!!

 Simplify the following expression with rational exponents, putting the answer in simplest form: ((-3)^(1/5)) * ((-3)^(1/10))  (-3)^(3/10) (-3)^(1/50) 3^(2/15) -3 (-3)^(1/15) Simplify the following... more

04/04/16

I really need help help with these two!

Rewrite using radicals: (x^(3/4))(y^(1/4))    cuberoot(x^4)*sqrt(x^(1/2))  cuberoot(x^4)*y^4  cuberoot(x^4)*4throot(y)  4throot((x^3)y)  sqrt((x^(3/2))y)  Rewrite using rational exponents:... more

04/04/16

I need help with these two questions!!!

Rewrite using radicals: (x^(3/4))(y^(1/4))  A: cuberoot(x^4)*sqrt(x^(1/2)) B: cuberoot(x^4)*y^4 C: cuberoot(x^4)*4throot(y) D: 4throot((x^3)y) E: sqrt((x^(3/2))y) Rewrite using rational exponents:... more

04/03/16

I really need help wih these two!!!

Rewrite using radicals: (x^(3/4))(y^(1/4))  cuberoot(x^4)*sqrt(x^(1/2)) cuberoot(x^4)*y^4 cuberoot(x^4)*4throot(y) 4throot((x^3)y) sqrt((x^(3/2))y) Rewrite using rational exponents: sqrt((3xy)^4) ... more

04/03/16

Rewrite using rational exponents: 6throot(c^3)

A: c^(6/3) B: c^2 C: c^(1/3) D: c^3 E: c^(1/2)

03/31/16

Divide: (sqrt(5) + 3) / (sqrt(5) - 3)

A: -17/2+(3/2) sqrt(5) B: -7/2 - (3/2) sqrt(5) C: 7/2 - (3/2) sqrt(5) D: 7/2 + (3/2) sqrt(5) E: 1 - (3/2) sqrt(5)

03/30/16

I really need help with these two questions!!!!!

A class of 200 students takes an exam. The students’ scores are normally distributed with a mean of 82 and a standard deviation of 5.Find the number of students in the interval between 82 and 92.... more

03/29/16

I need help!!

what is P(female | 1 pet)? (Remember that "|" means "given".) Type your answer as a fraction in simplest form                 0 pets,   1 pet,   2 pets,  +3 pets   Male          5         ... more

03/29/16

Can I please get some help with these two questions?

You are conducting a survey and you want to keep your margin of error to 4%. How many participants should you have in your sample?   You conduct a survey and find that 422 students out of 813... more

03/28/16

I need help!

What is the likely range for the population proportion voting for Bernie Sanders, if 225 voters out of a sample of 947 voters say they are voting for Bernie Sanders? Remember to calculate the... more

03/28/16

A class of 200 students takes an exam. The students’ scores are normally distributed with a mean of 82 and a standard deviation of 5.

Find the number of students in the interval between 82 and 92.

03/27/16

I really need help with these three questions!

You conduct a survey and find that 422 students out of 813 would vote for Hillary Clinton, if they could vote (same numbers as other problem). What is the likely range for the population... more

03/23/16

I need some help with these three questions!!! Multiply, then put your answer in simplest form: (2 sqrt(2) + 1) (3 sqrt(2) - 2)

(2 sqrt(2) + 1) (3 sqrt(2) - 2) A: -2 + 5 sqrt(2) B:10 - 7 sqrt(2) C: 12 - sqrt(2) D: 10 + 7 sqrt(2) E: 10 - sqrt(2)   (sqrt(5) + 3) (sqrt(5) - 2) A: -1 + sqrt(5) B: -6 + 6 sqrt(5) C: -1 + 5... more

03/22/16

Add/subtract, if possible, and put your answer in simplest form (if necessary): 2 sqrt(36x^3) + 3x sqrt(x) – 2x sqrt(25x)

3x sqrt(12x) 7x sqrt(x) Not possible to add/subtract 5 sqrt(x^3) 5x sqrt(x)

03/22/16

Add/subtract, if possible, and put your answer in simplest form (if necessary): sqrt(27x^2) + x sqrt(75) – 4x sqrt(3)

4 sqrt(3x^2) sqrt(90x^2) 30x sqrt(3) 4x sqrt(3) 4x sqrt(3x^2)

03/22/16

I really need help with these qeustions!!! Find the principle fourth root of -81

Find the principle cube root of -27   Find the principle square root of 4/25. Give your answer as a fraction in simplest form

03/15/16

I really need some help with these two! cuberoot(81(x^2)(y^4)) / cuberoot(15y^3)

3 cuberoot((x^2)y / 5) 9 cuberoot((x^2)y / 15) 9x cuberoot(y / 15) 3 cuberoot((x^2)y / 15) 9 cuberoot((x^2)y / 5)

03/15/16

2 cuberoot(5(x^2)(y^4)) ? 5 cuberoot(15y^3)

 A: 50y^2 cuberoot(3(x^2)y) B: 30y^2 cuberoot(5(x^2)y) C: 50y^4 cuberoot(3x^2) D: 5y^2 cuberoot(3(x^2)y) E: 50xy^2 cuberoot(3xy)

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