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juin [17]
3 years ago
14

Rob ate 3 cookies and drank 2 cups of milk. Barry ate 8 cookies and drank 1 cup of milk. Kevin ate 9 cookies and drank 4 cups of

milk. There were no leftovers after they ate. What food did they have before they ate? PLEASE HELP!!!
Mathematics
2 answers:
harkovskaia [24]3 years ago
8 0
<h3><u>Cookies</u></h3>

Rob: 3

Barry: 8

Kevin: 9

Let's add all of that up.

3 + 8 + 9

11 + 9

= 20 cookies total


<h3><u>Milk</u></h3>

Rob: 2

Barry: 1

Kevin: 4

Let's add this up.

2 + 1 + 4

3 + 4

= 7 cups of milk


They had 20 cookies and 7 cups of milk before they ate.

maksim [4K]3 years ago
6 0

Answer:24% and 38%

Step-by-step explanation: Thats's what it is on edge.

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Suppose total benefits and total costs are given by b(y) = 100y − 8y2 and c(y) = 10y2. what is the maximum level of net benefits
olga nikolaevna [1]
Whenever you face the problem that deals with maxima or minima you should keep in mind that minima/maxima of a function is always a point where it's derivative is equal to zero.
To solve your problem we first need to find an equation of net benefits. Net benefits are expressed as a difference between total benefits and total cost. We can denote this function with B(y).

B(y)=b-c
B(y)=100y-18y²

Now that we have a net benefits function we need find it's derivate with respect to y.

\frac{dB(y)}{dy} =100-36y

Now we must find at which point this function is equal to zero.

0=100-36y
36y=100
y=2.8

Now that we know at which point our function reaches maxima we just plug that number back into our equation for net benefits and we get our answer.

B(2.8)=100(2.8)-18(2.8)²=138.88≈139.

One thing that always helps is to have your function graphed. It will give you a good insight into how your function behaves and allow you to identify minima/maxima points.


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3 years ago
What is the value of the digit 7 in 870,541
faust18 [17]
The value of 7 in 870,541 is 10,000
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When Alexis Ross works overtime (and hours over 40 hours a week), she is paid 1.5 times her regular hourly rate. Last week she w
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In converting 540 inches into yards what unit would you place in the numerator of your ratio?
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The inches best and base drop, abandoning you with the outcome in yards.

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3 years ago
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