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Tutors Answer Your Questions about Square-cubic-other-roots (FREE)
Question 942488: Mary can jog, on average, 2 miles per hour faster than her husband, James. James can jog 6.6 miles in the same amount of time it takes Mary to jog 9 miles. Mary can jog __________ miles per hour?
Another word problem I can not comprehend
Click here to see answer by greenestamps(13392)   |
Question 942488: Mary can jog, on average, 2 miles per hour faster than her husband, James. James can jog 6.6 miles in the same amount of time it takes Mary to jog 9 miles. Mary can jog __________ miles per hour?
Another word problem I can not comprehend
Click here to see answer by josgarithmetic(39851) |
Question 942488: Mary can jog, on average, 2 miles per hour faster than her husband, James. James can jog 6.6 miles in the same amount of time it takes Mary to jog 9 miles. Mary can jog __________ miles per hour?
Another word problem I can not comprehend
Click here to see answer by MathTherapy(10898)  |
Question 965039: I need to simplify 3/2+sqrt 10.
I multiplied the top and bottom by the bottom part resulting in
3(2- sqrt10)/4-2sqrt10+2sqrt10-sqrt100. That further
Simplifies to 6-3sqrt10/4-10 which simplifies further to
6-3sqrt10/-6.
The answer I'm suppose to get is -1/2(2-sqrt10)
Click here to see answer by MathTherapy(10898) |
Question 148962: I need some help with this problem. I have tried to work it and cannot seem to come up with the answer All the directions say is to complete the square to solve the following equations
x^2+6x=7 ( i know that you need to get every thing on 1 side but then what)
x^2+6x-7=0
and with this problem the same directions but would you us the quadratic formula to solve? 2x^2-5x-3=0 Thanks Leann
Click here to see answer by josgarithmetic(39851) |
Question 148962: I need some help with this problem. I have tried to work it and cannot seem to come up with the answer All the directions say is to complete the square to solve the following equations
x^2+6x=7 ( i know that you need to get every thing on 1 side but then what)
x^2+6x-7=0
and with this problem the same directions but would you us the quadratic formula to solve? 2x^2-5x-3=0 Thanks Leann
Click here to see answer by MathTherapy(10898) |
Question 1073123: A school buys 200 calculators at a special price. x of them were scientific calculators at R89 a piece and
the rest were financial calculators at R599 a piece. An expression, in terms of x, for the total number of
financial calculators bought is ...
Click here to see answer by MathTherapy(10898) |
Question 97658: I need help completing the square for this problem.
16x^2-16x-5=0
So far I have tried this:
16x^2-16x+[1/2(-16)]=5+[1/2(-16)]
16x^2-16x+64=5+64
16(x^2-x+4)=69
16(????????????
I'm lost from this point on. I tried factoring but it's not working for me. I hope you can help me.
Thank you very much
Solve a Quadratic Equation by completing the square.
I was not sure what would be an acceptable answer for your teacher so I worked it all the way out. This problem is a Quadratic Equation. Here is your solution.
Click here to see answer by MathTherapy(10898) |
Question 973570: Hi,
Well I've run into a problem that I can't really do.
The question is to rationalise 1/(cube root 2 - 1). The answer is cube root 2 + cube root 4 + 1. I know how to rationalise 1/cube root 2 but I'm not sure how to do this one. What I got is:
1/cube root 2-1=1/cube root 2-1 * (cube root 2^2 + 1)/(cube root 2^2 + 1)
And I've so on and so forth, but I didn't get the right answer. I got cube root 4 + 1.
Thanks
Click here to see answer by greenestamps(13392) |
Question 973570: Hi,
Well I've run into a problem that I can't really do.
The question is to rationalise 1/(cube root 2 - 1). The answer is cube root 2 + cube root 4 + 1. I know how to rationalise 1/cube root 2 but I'm not sure how to do this one. What I got is:
1/cube root 2-1=1/cube root 2-1 * (cube root 2^2 + 1)/(cube root 2^2 + 1)
And I've so on and so forth, but I didn't get the right answer. I got cube root 4 + 1.
Thanks
Click here to see answer by MathTherapy(10898) |
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