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3 years ago

7

During a volleyball training session, Keela drank twice as much water as Carol, and Jimmy drank 100 mL more water than Keela. Be

tween them they drank 3 liters of water. Calculate how much water did each of them drink? (in mL)

1 answer:

Helen [10]3 years ago

3 0

Answer:

Step-by-step explanation:

keela50ML, carol25ML,jimmy100ML

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X-y+z=-4<br><br> 3x+2y-z=5<br><br> -2x+3y-z=15<br><br> How do I solve this?

Lera25 [3.4K]

$1)\ \ \ x-y+z=-4\ \ \ \Rightarrow\ \ \ z=-4-x+y\\\\2)\ \ \ 3x+2y-z=5 \\.\ \ \ \ \Rightarrow\ \ 3x+2y-(-4-x+y)=5 \\.\ \ \ \ \Rightarrow\ \ 3x+2y+4+x-y=5 \\.\ \ \ \ \Rightarrow\ \ 4x+y=1\\\\3)\ \ \ -2x+3y-z=15\\.\ \ \ \ \Rightarrow\ \ -2x+3y-(-4-x+y)=15\\.\ \ \ \ \Rightarrow\ \ -2x+3y+4+x-y=15\\.\ \ \ \ \Rightarrow\ \ -x+2y=11\\--------------------\\$

$z=-4-x+y\\.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ and\\ \left \{ {{4x+y=1\ \ \ \ } \atop {-x+2y=11\ /\cdot4}} \right. \\\\\left \{ {{4x+y=1\ \ \ \ } \atop {-4x+8y=44}} \right. \\-------\\y+8y=1+44\\9y=45\ /:9\\y=5\\\\-x+2y=11\ \ \ \Rightarrow\ \ \ x=2y-11\ \ \ \Rightarrow\ \ \ x=2\cdot5-11=-1\\\\z=-4-x+y=-4-(-1)+5=-4+1+5=2\\\\Ans.\ x=-1\ \ \ and\ \ \ y=5\ \ \ and\ \ \ z=2$

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3 years ago

I need help!!! And fast!!!!

kenny6666 [7]

There are six p's, and those six p's have a total sum of thirty six

6p=36

Divide both sides by six to get the value of p

36/6 is 6

p is equal to six

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3 years ago

Find the GCF please help show your work<br> 1. 25x^2 and 75x^3<br> 2. 12x^2y and 18xy^2

andriy [413]

Answer:

The probability would be 50%.

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Step-by-step explanation:

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3 years ago

The function f(x) = −16x2 + 112 models the height, in feet, of an

natima [27]

For this, just plug in 1.5 into the x variable of this function and solve as such:

$f(1.5)=-16*1.5^2+112\\f(1.5)=-16*2.25+112\\f(1.5)=-36+112\\f(1.5)=76$

<u>The height of the object was at 76 ft.</u>

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3 years ago

A shopkeepers bought 500 glass tumblers at rs 40 each . 20 glass tumblers were broken and he sold the rest at rs 45 each. Find h

Alona [7]

500 at 40 each = £20000

To make a profit he needs to make more than £20000

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480 x 45 = 21600

Profit = 21600 -20000 = 1600

His profit was £1,600

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2 years ago