Tutors Answer Your Questions about Radicals (FREE)
Question 87142: Okay, the following question has me stumped, Geometry: If the roof of a home is 7m from peak to eave and the attic space is 3m high at the peak, how long does each of the pieces of insulation need to be? (Insulation is 40cm wide rolls that are cut to fit between the rafters in the attic) Round the answer to the nearest tenth.
Click here to see answer by checkley75(3666)  |
Question 87648: I'm not really good at word problems, so if someone could help I would appreciate it.
How would I solve this.
One eighth of the square root of seven less than a number is 2. What is the number?
Thank you
Click here to see answer by stanbon(75887) |
Question 87950: I'm supposed to express in simpest radical form.
(square root of 3 minus square root of 5)(square root of 3 minus square root of 5).
Would you use the problem solving technique of (a-b)*(a+b)=asquare-bsquarePlease help!!
Thanks!!!
Click here to see answer by stanbon(75887) |
Question 88216: I need to find the solution for: radical (2y + 7) + 4 = y
I've started my solution by getting the radical by itself creating: radical (2y+7) = y - 4. Then I square both sides so I can remove the radical and end up with: 2y + 7 = y^2 - 8y + 16 from here on out I'm lost. Thanks.
Click here to see answer by rapaljer(4671)  |
Question 88217: This problem was already answered on this site, but I'm still confused and need clarification.
radical (4x + 1) + 3 = 0 First I get the radical by itself radical (4x + 1) = -3; next square both sides to remove the radical: 4x + 1 = 9; next I get the "x" by itself: 4x = 8; divide by 4 therefore x = 2 which when you put back into the equation leaves radical (4(2) + 1) + 3 = 0; radical (9) + 3 = 0; 3 + 3 does not equal zero. Although both my answer and that of the tutors is that equation has no solution, my answer is 2 and his was 0. What am I doing wrong?
Click here to see answer by rapaljer(4671) |
Question 88215: I need to find the solution for: radical (2y + 7) + 4 = y
I've started my solution by getting the radical by itself creating: radical (2y+7) = y - 4. Then I square both sides so I can remove the radical and end up with: 2y + 7 = y^2 - 8y + 16 from here on out I'm lost. Thanks.
Click here to see answer by rapaljer(4671) |
Question 88235: I have to simplify this radical equation: 8sqrt.2 - 6sqrt.7, but am I right in thinking that this radical equation CANNOT be simplified? So, there's no solution? Or am I way off track? Any help you can provide would be very much appreciated!
Thank you!!
Click here to see answer by jim_thompson5910(35256) |
Question 88348: This is a word problem, using the quadratic formula to solve an equation.
A garden area is 30 ft long and 20 ft wide. A path of uniform width is set around the edge. If the remaining garden area is 400 ft , what is the width of the path?
please help
Click here to see answer by ankor@dixie-net.com(22740)  |
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