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#126 Re: Help Me ! » typing math symbols » 2016-05-20 13:21:36
#127 Re: Help Me ! » typing math symbols » 2016-05-20 09:28:34
I sometimes went to this website: https://www.codecogs.com/latex/eqneditor.php and copied and pasted the equations. Microsoft Word accepts them.
#128 Re: Help Me ! » complex numbers » 2016-05-16 02:18:31
Okay, one thing I don't understand: what's the difference between j and i?
I'm used to writing out numbers like this: 49+2i
But here, you guys are using j... What's the difference?
#129 Re: Help Me ! » difficult triangle problems » 2016-05-15 05:39:50
They do mean the area of the triangle!
#131 Re: Help Me ! » LaTeX - A Crash Course » 2016-04-26 13:50:56
Try \boxed{}
#132 Re: Help Me ! » Angle Problems » 2016-04-26 13:47:16
I'm sure you can solve the rest...
#133 Re: Help Me ! » Denesting Nested Radicals Question » 2016-04-17 14:09:30
#134 Help Me ! » Denesting Nested Radicals Question » 2016-04-16 04:32:14
- evene
- Replies: 3
How do you do that? For example: How can you denest the nested radical ?
I'm just a beginner in this. I find it really interesting.
#135 Re: Help Me ! » Calculus » 2016-04-12 09:50:14
#136 Re: Help Me ! » hhhhhhhheeeeeeeeeellllllllp please » 2016-03-31 14:48:25
It gives you an explanation below...
#137 Re: Help Me ! » Help with combinations » 2016-03-26 02:34:39
Yes, that seems to work out. Just continue going replacing the hundreds place with a number one higher than the original one.
I listed them out, and got different combinations.
#138 Re: Help Me ! » Help with combinations » 2016-03-26 01:52:37
#139 Re: Help Me ! » [ASK] Tan 36° » 2016-03-22 13:45:42
#140 Re: Help Me ! » Probability » 2016-03-05 02:25:43
Ok, thanks guys!
#141 Help Me ! » Probability » 2016-03-04 12:14:52
- evene
- Replies: 4
1.) In how many ways can you spell the word COOL in the grid below? You can start on any letter, then on each step you can step one letter in any direction (up, down, left, right, or diagonal).
C C C C C
L O O O L
L O O O L
L O O O L
C C C C C
2.) I have 7 different math books and 4 different history books. In how many ways can I line the 11 books up on a shelf if a history book must be in the middle and each end must be a math book?
#142 Re: Help Me ! » Help geo math problem » 2016-02-28 14:58:44
Yeah. You're diagram is correct. I plotted the Asymptote commands and it looks exactly like yours.
Give or take some lines.
#143 Re: Help Me ! » Help geo math problem » 2016-02-27 10:26:54
#144 Re: Help Me ! » Summing » 2016-02-21 07:13:36
I know! Which is why I put it on here.
#145 Re: Help Me ! » Distance Problems -Help! » 2016-02-21 07:12:22
You take Latin too?
#146 Re: Help Me ! » Distance Problems -Help! » 2016-02-21 03:44:12
Just for the record, I have a hard time understanding Speed and Distance problems and setting up equations.
Thanks anna and Grantingriver.
Grantingriver, this is for you: Doesn't Q.E.D mean quod erat demonstratum, which translates into "which was to be proven"? If so, then what are we proving?
#147 Re: Help Me ! » Summing » 2016-02-21 03:40:46
Oh my... you guys are so funny...
How about this:
Let . So, . Subtracting x from 10x gives us which is 9.#148 Re: Help Me ! » Distance Problems -Help! » 2016-02-20 03:40:01
So, I figured out the first problem and the fourth problem. Now, I just need to know the second one.
#149 Re: Help Me ! » Distance Problems -Help! » 2016-02-19 01:52:30
What a weird number...
#150 Help Me ! » Distance Problems -Help! » 2016-02-18 14:36:08
- evene
- Replies: 10
I need help with these distance problems. They are so annoying and I find them a bit difficult. Also, please show work!
(1) A pilot plans to make a round trip flight lasting 2.5 hours. How far can the pilot plan to go if the rate going is 480 kilometers per hour and the rate returning is 320 kilometers per hour?
(2) Sherry drove 80 miles from her home to City A. On the way home (same route), she drove 12 miles per hour faster than she did on the way to City A. If she arrived home in of the time she took on the way to City A, how many minutes did it take for her to drive from home, to City A?(3) It takes a boat 2 hours less to travel downstream than to travel back upstream. If the round trip is 100 miles and the boat travels 5 miles per hour faster to the downstream than to the upstream, how fast did the boat travel to the upstream?
(4) A jet airline takes 1.2 times as long to fly from Paris, to New York (3,600 miles) as to return. If the jet cruises at 550 miles per hour in still air, what is the average rate of the wind blowing in the direction of Paris from New York?
This next one, I just need verification that I did it correctly!
(1) Two planes travel at right angle to each other after leaving the same airport at the same time. One hour later, they are 260 miles apart. If one plane travels 140 miles faster than the other, what is the rate of each plane?
Let a be the speed of the slower plane. So, from Pythagorean Theorem, we have .Expanding and simplifying givesThat factors into whatever that factors into to, and we choose the positive solution of the two solutions.
Is that correct? I still need to factor, but other than that, I'm good!
Thank you for your time and effort (more like effortless) on this post. Have a nice day!
P.S This is my post! Which simplifies into post!