Database Develop

Need help with this math problem.

So here's the problem.
Jones invested $18,000 in two accounts. One account pays 6% simple interest and the other pays 8% interest. Her total interest for the year was 1290. how much did she have in each account?
I know the answer because i looked for a solution and here it is.
6% account has x dollars 8% account has 18000-x dollars Interest = Principle * Rate * Time Interest from 6% account = x(0.06)(1) = 0.06x Interest from 8% account = (18000 -x)(0.08)(1) = 0.08(18000 - x) Total interest: 0.06x + 0.08(18000 - x) = 1290 0.06x + 1440 - 0.08x = 1290 -1440 -1440 -0.02x = -150 x = 7500 6% account has 7500 which earns 450 interest 8% account has 18000-7500 or 10500 dollars which earns 840 interest checks out to give a total of 1290 interest.
What i need to know is why was the 8% used to multiply on (18,000-x) instead of 6%?

I think the equation should read:
0.06x + 0.08y = $1290
Since the two variable represent different accounts. In this equation x would equal the amount in the account receiving 6% interest and y would equal the amount in the account receiving 8% interest. You substitute "18000 - x" because that is what y equals:
y= 18000 - x
So using substitution the equation would be:
0.06x - 0.08(18000 - x) = 1290
Now you only have 1 variable and it makes it much easier to solve the problem.

My real question is why was the 8% used to multiply with the 18,000 instead of the 6%?
Sent from my SGH-T959 using XDA App

You could have had it set up this way:
X=18000-y
You could have multiplied that by the 6%, but as you would work it out you'd have to get rid if the negatives at the end.
The equation would be:
.06(18000-y)-.08y=1290
Sent from 234 Elm Street

slow_DC4 said:
You could have had it set up this way:
X=18000-y
You could have multiplied that by the 6%, but as you would work it out you'd have to get rid if the negatives at the end.
The equation would be:
.06(18000-y)-.08y=1290
Sent from 234 Elm Street
Click to expand...
Click to collapse
This would give me a different answer.

$7500 in the 6% account would earn you $450
$10500 in the 8% account would earn you $840
The question could read: what is the bank account that would give you 6% interest 1.6 yeah!

iynfynity said:
This would give me a different answer.
Click to expand...
Click to collapse
Sorry, second equation should be
.06(18000-y)+.08y=1290
Sent from 234 Elm Street

OMG maths reached XDA , i'll kill myself , as i'm very stupid in maths
i can't even look at the numbers

If this is boring boring anyone. Try this.
If you have 1 $ which doubles (1 - 2 - 4 - 8 - 16) everyday, how long will it take to make you a billionaire.
Find out yourself and be surprised.
Sent from my LG-P500 using XDA Premium App

4silvertooth said:
If this is boring boring anyone. Try this.
If you have 1 $ which doubles (1 - 2 - 4 - 8 - 16) everyday, how long will it take to make you a billionaire.
Find out yourself and be surprised.
Sent from my LG-P500 using XDA Premium App
Click to expand...
Click to collapse
I'll do this in java later.
Sent from my SGH-T959 using XDA App

iynfynity said:
I'll do this in java later.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
While you are at it try this amazingly simple junior school equation and tell me the value of X
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MikeChannon said:
While you are at it try this amazingly simple junior school equation and tell me the value of X
Click to expand...
Click to collapse
X=i?
Sent from 234 Elm Street

Get "alpham plus" and it will show the work for you!
Sent from my DROID2 using XDA App

4silvertooth said:
If this is boring boring anyone. Try this.
If you have 1 $ which doubles (1 - 2 - 4 - 8 - 16) everyday, how long will it take to make you a billionaire.
Find out yourself and be surprised.
Sent from my LG-P500 using XDA Premium App
Click to expand...
Click to collapse
That depends on who you talk to, as some areas of the world consider 1000 millions to be 1 billion in which case it would be 31 finally equating to
1,073,741,824
But if you go for a million millions = 1 billion it would be 41 with a final of
1,099,511,627,776
I feel sick and my brain hurts.

MikeChannon said:
While you are at it try this amazingly simple junior school equation and tell me the value of X
Click to expand...
Click to collapse
-1?
sent from nowhere.

checkbox111 said:
That depends on who you talk to, as some areas of the world consider 1000 millions to be 1 billion in which case it would be 31 finally equating to
1,073,741,824
But if you go for a million millions = 1 billion it would be 41 with a final of
1,099,511,627,776
I feel sick and my brain hurts.
Click to expand...
Click to collapse
31 is also my answer when it's 1,000,000,000. How do you show this in an equation? I solved mine in Java.

iynfynity said:
31 is also my answer when it's 1,000,000,000. How do you show this in an equation? I solved mine in Java.
Click to expand...
Click to collapse
Geometric Sequencing
S = (first term)*(1 - r^n)/(1-r)
In this case the first term is 1, the ratio, r, is 2 (the amount of
$'s doubles every day) and n (the number of terms) is 31.

checkbox111 said:
Geometric Sequencing
S = (first term)*(1 - r^n)/(1-r)
In this case the first term is 1, the ratio, r, is 2 (the amount of
$'s doubles every day) and n (the number of terms) is 31.
Click to expand...
Click to collapse
So now get a bussiness which doubles your money, and get rich fast.
Sent from my LG-P500 using XDA Premium App

4silvertooth said:
So now get a bussiness which doubles your money, and get rich fast.
Sent from my LG-P500 using XDA Premium App
Click to expand...
Click to collapse
Yes! but first learn to spell

checkbox111 said:
Yes! but first learn to spell
Click to expand...
Click to collapse
Just an extra s. U s. Just remove the ass (s) after you(u) to get it right.
Sent from my LG-P500 using XDA Premium App

What is your mental age?

Hey,
I've just found it on another forum: www.yourmentalage.com
I thought you may like it. I got 22, but I'm 30 really...
What scores do you get?

janek4 said:
Hey,
I've just found it on another forum: www.yourmentalage.com
I thought you may like it. I got 22, but I'm 30 really...
What scores do you get?
Click to expand...
Click to collapse
All done mental age 25, actual age 23 lol
Sent from my HTC Sensation XE with Beats Audio Z715e using Tapatalk

Mental: 34
Actual: 17.5
:-|
SENT FROM WHATEVER IS NOT SOMETHING TO BE LOCKED AT, THE THING IS THAT IT IS SENT.

Ma: 25
aa: 24.95

31 and I'm 20

ashkan-khatar said:
Mental: 34
Actual: 17.5
:-|
SENT FROM WHATEVER IS NOT SOMETHING TO BE LOCKED AT, THE THING IS THAT IT IS SENT.
Click to expand...
Click to collapse
Seraz007 said:
31 and I'm 20
Click to expand...
Click to collapse
You two need to live it up a little, you kids are to young to act so old!
Me:
Mental age 22
Actual age 34
Sent from my GT-I9505G using Tapatalk

Mental age: 28 (0.0)
Actual age: 14

MA: 22
AA: 25
Sent from my SM-N900T using Tapatalk

Real age 41
Mental age...... 19
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m1l4droid said:
Oh My Gods... what the **** is that thing? It reminds me of the Kaiju from Pacific Rim...
Also, mental age: 22
Actual age: 23
Click to expand...
Click to collapse
It's a Hydrothermal worm, according to this page...
http://www.inspirationgreen.com/fei-electron-microscope.html
I'm glad they're so tiny. If that was large enough to see I'd never go out.

Mental age : 31
Actual age : 16
...does this mean I'm going to go brain dead earlier than when i finally die

Not sure that your mental age can be determined by 6 questions, but:
Mental: 28
Actual: 32

m1l4droid said:
Oh My Gods... what the **** is that thing? It reminds me of the Kaiju from Pacific Rim...
Click to expand...
Click to collapse
They reminded me of this.
Dust mites.
My score:
Mental age: 25
Actual age: Take a guess

Ichigo said:
I have the oldest mental age so far.
Click to expand...
Click to collapse
Try this http://www.dumb.com/mentalage/
I got 34

roofrider said:
Try this http://www.dumb.com/mentalage/
I got 34
Click to expand...
Click to collapse
I got 48
Actual age 45
I am an old fart after all :silly:
XDA Moderator

Mental Age 28
Real Age 18

Mental age: 22
Actual age: 15
Sent from my Atrix HD
Check out this thread!

Hahhaha mental age 18
Actual 36
Inviato dal mio Nexus 4 utilizzando Tapatalk

"Your mental age is 25", I'm actually 26 so I guess I'm a little immature for my age

31
Actual age: 24
Sent from my C6906 using Tapatalk

New Kitkat ROM!!

Dhacker released a new rom for our atrix hd called GUMMY ROM
Anyone pls post it in the development thread!!
Dhacler folder Link: http://androidhosting.org/Devs/Dhacker29/msm8960/
Rom link: http://androidhosting.org/Devs/Dhacker29/msm8960/Gummy-2.0-12-02-13-UNOFFICIAL-mb886.zip
:victory::victory:

SanthosneoV said:
Dhacker released a new rom for our atrix hd called GUMMY ROM
Anyone pls post it in the development thread!!
Dhacler folder Link: http://androidhosting.org/Devs/Dhacker29/msm8960/
Rom link: http://androidhosting.org/Devs/Dhacker29/msm8960/Gummy-2.0-12-02-13-UNOFFICIAL-mb886.zip
:victory::victory:
Click to expand...
Click to collapse
Any details of the rom?
Whats working and whats not.

It's pretty dang smooth. Although for some reason my home button doesn't seem to do anything. But this rom has pretty much all the customizable options. You can add buttons to the nav bar but not menu for some reason.
Sent from my PACMAN MATRIX HD MAXX

Ya home button is not fully functioning... Google now can be accessed using it.

I've been messing with it for a while now and it's pretty sweet... Not as many features as I'm used to but for a 4.4 ROM, there are practically no problems for me... (PIE User)
53 65 6e 74 20 66 72 6f 6d 20 6d 79 20 41 74 72 69 78 20 48 44 20 75 73 69 6e 67 20 74 61 70 61 74 61 6c 6b 2e 2e 2e

Normally I don't double post, but...
cj360 has builds for AOSPA 4.0 (ALPHA)...
It has a working Halo and the new Immersive and QuickSettings Edit Modes!
I'm currently using the xt925 version and it's working just great!
http://www.drdevs.com/devs/cj360/Aospa/
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Byakko Custom said:
Normally I don't double post, but...
cj360 has builds for AOSPA 4.0 (ALPHA)...
It has a working Halo and the new Immersive and QuickSettings Edit Modes!
I'm currently using the xt925 version and it's working just great!
http://www.drdevs.com/devs/cj360/Aospa/
Click to expand...
Click to collapse
Everything working in the XT925 version? I can't live without halo

@Black_halo
I couldn't test anything service/bluetooth related, but for the most part, it's working for me.
Compared to the other 4.4 Roms (CM/Gummy/PSX) it's a little "under-featured" as it's essentially AOSP+Halo/Immersive/QSEdit.
Home button works so I'll be playing around with it. Anything else, I'll just use xposed modules for other things...

Byakko Custom said:
@Black_halo
I couldn't test anything service/bluetooth related, but the most part, it's working for me.
Compared to the other 4.4 Roms M/Gummy/PSX) it's a little "under-featured" as it's essentially AOSP+Halo/Immersive/QSEdit.
Home button works so I'll be playing around with it. Anything else, I'll just use xposed modules for other things...
Click to expand...
Click to collapse
I've been trying to wait around for a little kitkat action! I'm still on 4.3 until the devs cook up something with halo and nav bar mods. Not really big on pie since I could kill tasks and turn on my flashlight from the back and home buttons.

Byakko Custom said:
@Black_halo
I couldn't test anything service/bluetooth related, but for the most part, it's working for me.
Compared to the other 4.4 Roms (CM/Gummy/PSX) it's a little "under-featured" as it's essentially AOSP+Halo/Immersive/QSEdit.
Home button works so I'll be playing around with it. Anything else, I'll just use xposed modules for other things...
Click to expand...
Click to collapse
Now 4.4.1 source is released, hope we get a better camera app in coming builds.

Now that is great. Where to get source?
Sent from my Atrix HD using ProBAM rom and XDA 4 Premium

SVLAN said:
Now that is great. Where to get source?
Sent from my Atrix HD using ProBAM rom and XDA 4 Premium
Click to expand...
Click to collapse
Here's the news
http://www.xda-developers.com/android/android-4-4-1-source-code-released-to-the-aosp/

Building now to update few roms on the works. Lol
Sent from my Atrix HD using ProBAM rom and XDA 4 Premium

SVLAN said:
Building now to update few roms on the works. Lol
Sent from my Atrix HD using ProBAM rom and XDA 4 Premium
Click to expand...
Click to collapse
I hope we get PSX rom updated soon.

What is your Resting Heart Rate?

Are you spending too much time downloading ROM's, and not enough keeping fit?
Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness.
To measure your heart rate, simply check your pulse. Place your index and third fingers on your neck to the side of your windpipe. To check your pulse at your wrist, place two fingers between the bone and the tendon over your radial artery — which is located on the thumb side of your wrist.
When you feel your pulse, count the number of beats in 15 seconds. Multiply this number by 4 to calculate your beats per minute.
Use this chart to see what your RHR should be for someone your age:
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Mine is 60BPM, which for my age is excellent. What is yours...?

67. I shd èxercise more

70

According to Runtastic (Why waste time counting it yourself when both your Note 3 and S5 can count your heartbeats? ) 67 beats per minute, which is fine for a 23 year old woman whose only excersize is running after public transport whilst lugging about a 25kg backpack.

Nobody so far in danger of prematurely popping their clogs, so to speak! That's good to know. No athletes either though!
By the way, Pro Cyclist Miguel Indurain, who won five consecutive Tours De France had a RHR of 28BPM!

Mine is between 53 and 60, according to my wife's pulse oximeter. Not bad, at all.
Sent from my Nexus 5 using Tapatalk

58
@ rest 58/min
@ exercise 100/min
-------
For fitness , I do Surya Namaskar ( सूर्य नमस्कार ) and Yoga ( योग )..

jRi0T68 said:
Mine is between 53 and 60, according to my wife's pulse oximeter. Not bad, at all.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
I didn't know you had it in you!
Dips into Athlete territory for you doesn't it?

DirkGently said:
I didn't know you had it in you!
Dips into Athlete territory for you doesn't it?
Click to expand...
Click to collapse
It should, but I'm woefully out of shape and over weight. Lol.
I'm just genetically lucky with all things related to my health.

jRi0T68 said:
It should, but I'm woefully out of shape and over weight. Lol.
I'm just genetically lucky with all things related to my health.
Click to expand...
Click to collapse
You've got a big heart!

I get 70 a minute, average for my age. Honestly I was expecting worse lol. Outside of work I don't really move around a whole lot, besides walking to and from the store which is only like 2 miles. Work on the other hand lol.. If I average just 1 mph that's 10 miles a day, 4 days a week.
Sent from my Nexus 5 using XDA Premium 4 mobile app

Around 67

Meh.... 52 which should be excellent for my age.
Sent from my SM-T230NU using XDA Free mobile app

63

370

if i lie in bed 49
sitting 60

~50-54

Last time I had it checked (I was crook at the time @ the quacks) it was 56... For fitness I - Kung Fu, Football, Weight train, mountain bike... Seasonal for Football and mountain biking (winter - no winter respectively)
Sent from my Kin[G]_Pad ™

My resting is 60.

For my age its not bad and without doing silly amounts of exercise each day - between 55-60 bpm

Moto e5 play: how to replace system phone app

Hi guys,
I hope this forum still has some activity and someone can help me with the issue.
My old mom is using this phone, but original Google's "Phone" app (dealer or how it calls?) is definitely not good for the old people, especially with latest "improvements"
I want to install another phone dealer, something like phone dealer from my Samsung Galaxy S9: on incoming call it should bring a full screen form, with big, visible buttons and clear call details (picture etc.)
Aby recommendations?

sensboston said:
Hi guys,
I hope this forum still has some activity and someone can help me with the issue.
My old mom is using this phone, but original Google's "Phone" app (dealer or how it calls?) is definitely not good for the old people, especially with latest "improvements"
I want to install another phone dealer, something like phone dealer from my Samsung Galaxy S9: on incoming call it should bring a full screen form, with big, visible buttons and clear call details (picture etc.)
Aby recommendations?
Click to expand...
Click to collapse
The phone app is also referred to as a "dialer
You could look for an alternative dialer on the play store.
You might be able to sideload the samsung dialer. You can try looking on apkmirrior.com for it. You may have to move it to the system partition, which requires root. You also will have to set it as the default app for "phone". This setting is usually found in settings -> system -> apps.
You could also use an app like Tasker to create a "scene" that would display, or audibly announce the caller. There is a forum here on XDA for Tasker if you need help.
{SCAVENGER HUNT} Final Destination
You are trying to decipher clues finding a phrase along the way
first clue:
01101000 01110100 01110100 01110000 01110011 00111010 00101111 00101111 01100110 01101111 01110010 01110101 01101101 00101110 01111000 01100100 01100001 00101101 01100100 01100101 01110110 01100101 01101100 01101111 01110000 01100101 01110010 01110011 00101110 01100011 01101111 01101101 00101111 01110011 01101000 01101111 01110111 01110000 01101111 01110011 01110100 00101110 01110000 01101000 01110000 00111111 01110000 00111101 00110110 00111001 00111000 00110111 00110000 00110111 00110011 00111001 00100110 01110000 01101111 01110011 01110100 01100011 01101111 01110101 01101110 01110100 00111101 00110001 00100000 01110111 01101111 01110010 01100100 00100000 00110101
Click to expand...
Click to collapse
second clue:
104 116 116 112 115 58 47 47 102 111 114 117 109 46 120 100 97 45 100 101 118 101 108 111 112 101 114 115 46 99 111 109 47 115 104 111 119 112 111 115 116 46 112 104 112 63 112 61 55 48 56 55 52 57 56 50 38 112 111 115 116 99 111 117 110 116 61 49 32 53 116 104 32 102 114 111 109 32 108 97 115 116 32 119 111 114 100
Click to expand...
Click to collapse
third clue:
aHR0cHM6Ly9mb3J1bS54ZGEtZGV2ZWxvcGVycy5jb20vc2hvd3Bvc3QucGhwP3A9Nzg1NzY4OTkmcG9zdGNvdW50PTEgICB3b3JkIDIw
Click to expand...
Click to collapse
fourth clue:
104 116 116 112 115 58 47 47 102 111 114 117 109 46 120 100 97 45 100 101 118 101 108 111 112 101 114 115 46 99 111 109 47 115 104 111 119 112 111 115 116 46 112 104 112 63 112 61 55 48 57 48 55 51 56 50 38 112 111 115 116 99 111 117 110 116 61 49 32 119 111 114 100 32 56
Click to expand...
Click to collapse
fifth clue:
kwwsv://iruxp.agd-ghyhorshuv.frp/vkrzsrvw.sks?s=53295923&srvwfrxqw=2 1vw zrug diwhu olqn
Click to expand...
Click to collapse
sixth clue:
SGGKH://ULIFN.CWZ-WVEVOLKVIH.XLN/HSLDKLHG.KSK?K=29202145&KLHGXLFMG=2 DLIW KIVXVWRMT Z DLIW RM ZOO XZKH
Click to expand...
Click to collapse
final clue:
{
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"lightbox_error": "The requested content cannot be loaded. Please try again later.",
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"lightbox_download": "Download",
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"lightbox_toggle_sidebar": "Toggle sidebar"
}
Click to expand...
Click to collapse