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True [87]
2 years ago
13

If purchased a TV on my debit card, money will be taken out of my account immediately

Mathematics
1 answer:
Mashcka [7]2 years ago
8 0

Answer: Debit card transactions usually go through a period where the purchase is pending before the funds are removed from your account. The funds will not be taken out of your account immediately. Therefore it is false

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3x+3y+6z=9<br> 2x+y+3z=7<br> x+2y-z=-10 <br> any one know the answer
kati45 [8]
3x + 3y + 6z = 9
2x + 1y + 3z = 7    ⇒ 6x + 6y + 8z = 6
1x + 2y  - 1z = -10                                   6x + 6y + 8z = 6
                                                                                4z = 12 
3x + 3y + 6z = 9                                                       4      4
2x + 1y + 3z = 7    ⇒  0x + 0y + 4z = 12                    z = 3
1x + 2y  - 1z = -10                                             2x + y = -2
                                                                      2x + (-4) = -2
                                                                          2x - 4 = -2
                                                                              + 4  + 4
                                                                               2x = 2
                                                                                2     2
                                                                                 x = 1
                                                                       (x, y, z) = (1, -4, 3)
7 0
3 years ago
If two fair dice are tossed, what is the smallest number of throws, n, for which the probability of getting at least one double
amid [387]

This is a rather famous probability problem.

The easiest way to solve this is to calculate the probability that you WON'T roll a "double 6" (or a twelve) each time you roll the dice.  There are 36 ways in which dice rols can appear and only one is a twelve.  So, for one roll, the probability that you will NOT get a twelve is (35/36)^n where 35/36 is about .97222222 and n would equal 1 for the first trial.  So for your first roll the odds that you WON'T get a 12 is .97222222.

For the second roll we calculate (35/36) to the second power or (35/36)^2 which equals about .945216.

When we get to the 24th roll we calculate (.97222222)^24 which equals 0.508596.  

For the 25th roll, we calculate (.97222222)^25 which equals  0.494468.  For the first time we have reached a probability which is lower than 50 per cent.  That is to say, after 25 rolls, we have reached a point in which the probability is less than 50 per cent that we will NOT roll a twelve.

To phrase this more clearly, after 25 rolls we reach a point where the probability is greater then 50 per cent that you will roll a 12 at least once.

Please go to this page 1728.com/puzzle3.htm and look at puzzle 48. (The last puzzle on the page).  An intersting story associated with this probability problem is that in 1952, a gambler named Fat the Butch bet someone $1,000 that he could roll a 12 after 21 throws.  (He miscalculated the odds [as we know you need 25 throws] and after several HOURS, he lost $49,000!!!)

Please go that page and it has a link to the Fat the Butch story.


3 0
3 years ago
X = 0.8× + 72<br><br>a)112<br>b)288<br>c)360<br>d)432
bonufazy [111]
The answer is c x=360
6 0
3 years ago
Pls help it’s solve the expression it’s in the attatchmenr
kondor19780726 [428]

Answer:

-16+\sqrt{31}

Step-by-step explanation:

3 0
3 years ago
Solve for x: -4x – 12 &gt; 36 A. x &gt; -12 B. x &gt; 12 C. x &lt; -12 D. x &lt; 12
Nataliya [291]

Answer: x < -12

Step-by-step explanation:

-4x – 12 > 36

4x > 36+ 12

-4 > 48

x < -48/4

x < -12

Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great rest of Black History Month! :-)  

- Cutiepatutie ☺️❀❤

4 0
3 years ago
Read 2 more answers
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