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quester [9]
3 years ago
14

X+y+z=12x-y+z=-8-x-y+2z=-7

Mathematics
1 answer:
klasskru [66]3 years ago
7 0
1. x = 1/3 y = 1/3 z = 1/3
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PLEASE HELP
FrozenT [24]

Answer:

mode = the most

mean =average of the numbers: a calculated "central" value of a set of numbers. ... add up all the numbers, • then divide by how many numbers there are.

median=The middle number; found by ordering all data points and picking out the one in the middle (or if there are two middle numbers, taking the mean of those two numbers).

<h3>Mark</h3>

Now we arrange all Mark's test scores first (arrange in a sequence), so it will become :

71, 74, 76, 82, 83, 94, 94

mode = 94

mean = (71 +74+76+82+83+94+94) over 7

= 574 over 7

= 82

median = 82

<h3>Irina</h3>

Now we arrange all Irina's test scores first (arrange in a sequence too) , so it will become :

79, 79, 82, 83, 89, 95, 95

mode (there are 2 modes in Irina test) which is 79 and 95 because both of them appears twice.

mean = (79+79+82+83+89+95+95) over 7

= 602 over 7

= 86

median = 83

<h3>HOPE IT HELP</h3>
5 0
3 years ago
In laboratorul de informatica se asaza cate 2 copii la un calculator si un copil ramane singur si un calculator daca se asaza ca
Katena32 [7]
I don’t understand sorry
4 0
3 years ago
Item 1: sleeved dress $17.99
Oksana_A [137]

Answer:

<em>The final price including tax is $41.89</em>

Step-by-step explanation:

The following items are on sale:

Sleeved dress $17.99

Skirt $16.19

T-shirt $8.99

Subtotal $43.17

The cheapest item is the T-shirt for $8.99 and it will be discounted by 30%:

$8.99 - 30/100 * $8.99 = $8.99 - $2.70 = $6.29

The total sale price is now: $43.17-$2.70=$40.47

Now we add the 3.5% tax:

$40.47 + 3.5/100 * $40.47 = $40.47 + $1.42 = $41.89

The final price including tax is $41.89

8 0
3 years ago
Add. −5/12+(−3/4) Enter your answer in the box as a fraction or mixed number in simplest form.
brilliants [131]
The answer is 1/2 cuz of simplyfing
5 0
3 years ago
3) If the slope of PQ is 4 and the slope of OR is – 1/2 , find the slope of SR so that PQRS is a parallelogram.​
satela [25.4K]

Answer:

Step-by-step explanation:

the anwser is 1/3

4 0
3 years ago
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