Tutors Answer Your Questions about Radicals (FREE)
Question 1119299: Variable in the Radicand?
I've been staring at this for just about an hour now, and for some reason my brain just won't process it. I'd love some help on this!
Look at the following expression. Are there any values of x for which the expression is not defined under the set of real numbers? Explain your reasoning.
4/ square root of (x+2)
Rewrite the following expression by rationalizing the denominator.
4/ square root of (x+2)
Click here to see answer by solver91311(24713)   |
Question 1119700: April shoots an arrow upward into the air at a speed of 64 feet per second from a platform that is 34 feet high. The height of the arrow is given by the function h(t) = -16t2 + 64t + 34, where t is the time is seconds. What is the maximum height of the arrow?
Click here to see answer by ikleyn(52776)  |
Question 1119700: April shoots an arrow upward into the air at a speed of 64 feet per second from a platform that is 34 feet high. The height of the arrow is given by the function h(t) = -16t2 + 64t + 34, where t is the time is seconds. What is the maximum height of the arrow?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1119842: These radical expressions confused me, the question requires me to write whether the expression is irrational or rational.
"Determine whether each of the following is rational or irrational:
a) square root of 2 + square root of 50
b)C=2(pi symbol)r, evaluated for r= n to the power of negative 1"
Thank you!
Click here to see answer by ankor@dixie-net.com(22740) |
Question 1119842: These radical expressions confused me, the question requires me to write whether the expression is irrational or rational.
"Determine whether each of the following is rational or irrational:
a) square root of 2 + square root of 50
b)C=2(pi symbol)r, evaluated for r= n to the power of negative 1"
Thank you!
Click here to see answer by greenestamps(13198)  |
Question 1119879: 3. The time for a swing to move forward and backward can be determined by the formula t=2 pie square toot l/9.8 T represents the time, in seconds, taken by the swing to move through one complete cycle (forward and back) and L represents the length of the rope supporting the swing.
Determine the length of the rope supporting a swing that takes 3.4 seconds to move through one complete cycle. Show all steps and round the answer to the nearest tenth of a metre.
Click here to see answer by Boreal(15235)  |
Question 1120650: 1.) Explain the relationship between radical equations and complex numbers. What are the most important things to keep in mind when working with radical equations and complex numbers?
2.) We know that the square root of -1 is i. Going a bit further: what is the square root of i? [Hint: the square root of i will be a complex number, of the form a + bi. So, (a+bi)*(a+bi) = i. FOIL the left side, come up with equations relating a and b, and see if you can solve the system.
Click here to see answer by solver91311(24713) |
Question 1124907: Help needed please. Need to simplify. x and y represent non-negative real numbers.
∛((-27y^18)/(81x^6 ))
When I multi[ply by the conjugate to find the answer, as shown below, I think I'm messing up.
-∛y^6/∛3x^2(∛3x^2/∛3x^2)
Is this correct? For some reason this area of study isn't clicking.
Advice on how to go about solving would be greatly appreciated.
Thank you!
Click here to see answer by solver91311(24713) |
Question 1124962: I am asked to perform the indicated operations, and simplify; however, I don't believe this question can be simplified. Am I wrong?
(√2x-5)^2
I assume the only way to go about this is to break it apart:
(√2x-5)(√2x-5) but this only puts it back together.
Am I missing something? I cant believe they would ask a question without an answer.
Thank you!
Click here to see answer by ikleyn(52776) |
Question 1124962: I am asked to perform the indicated operations, and simplify; however, I don't believe this question can be simplified. Am I wrong?
(√2x-5)^2
I assume the only way to go about this is to break it apart:
(√2x-5)(√2x-5) but this only puts it back together.
Am I missing something? I cant believe they would ask a question without an answer.
Thank you!
Click here to see answer by greenestamps(13198) |
Question 1125162: The domain of the function
f(x)=sqrt(x^2-13x+36) consists of one or more of the following intervals (-∞,A],[A,B],[B,∞) where A
Find A
Find B
for each interval answer yes or no to shelter the interval is included in the solution.
(-∞,A]
[A,B]
[B,∞)
Click here to see answer by greenestamps(13198) |
Question 1126716: To determine the size of a park's moose population, naturalists catch
63 moose, tag them, and then set them free. Months later
20 moose are caught, of which 15 have tags. Estimate the size of the moose population.
Click here to see answer by ikleyn(52776) |
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