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Veseljchak [2.6K]
3 years ago
7

Gracie will go to the swimming pool on 20 different days this months.

Mathematics
1 answer:
Klio2033 [76]3 years ago
6 0

Answer:

15

Step-by-step explanation:

2.25 times 20 is 45 minus 30 is 15

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Include work pleaseeeee
Angelina_Jolie [31]
Okay so to represent juice we are going to use X, and to represent water we are going to use Y.

We also know that the first two starting equations are:

6x + y = 135

4x + 2y = 110

We can re-arrange the first equation so that it equals y (for now), so it is going to end up looking like this:

y = -6x +135

Now you can take that equation and plug into either one of the starting two equations.  I chose the second equation.  We just substitute what y equals in for y in the equation, so we have:

4x + 2(135 - 6x) =  110

Now solve

4x + 270 -12x = 110

-8x + 270 = 110

Subtract 270 from both sides

-8x = -160

Now divide by -8 on both sides

x = 20

We can now confirm that juice costs $20

Now lets plug that into the equation where we solved for y, to get the actual value of y.

y = 135 - 6(20)

y = 135 - 120

y = 15

The price of water costs $15

From this we can conclude that the cost of juice is $20 and the price of water is $15

5 0
3 years ago
The Class Earned $3 A Day For One Week For Their School Trip. How Much Money Did They Have By The End Of The Week?
zzz [600]
$21 because 3$x$7(numbers of days in a week)is $21. I hope this helps :)
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A food production company is choosing between two suppliers of grain. Supplier A sells grain for $5.25 per bushel plus a
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Answer:

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Step-by-step explanation:

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The answer is d. A small business loan
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