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Step2247 [10]
3 years ago
6

To clean a fish tank, 2/3 cup of disinfectant is needed for every 3 gallons of water. How many cups of disinfectant is needed fo

r 36 gallons of water? (Hint: set up a proportion!)
Mathematics
1 answer:
slamgirl [31]3 years ago
3 0

Answer:

8 cups disinfectant per 36 gallons of water

Step-by-step explanation:

Yes, set up an equation of ratios:

 2/3 cup disinfectant          3 gallons water        1

--------------------------------  =  -------------------------- = -----

                x                          36 gallons water      12

Cross multiplication yields  12(2/3 cup disinfectant) = 1x, so that:

x = 8 cups

8 cups of disinfectant are needed to make a solution involving 36 cups water.

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3 years ago
I need help how to do Arrays and an Expanded Algorithm
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4 0
3 years ago
What is the value of x when y equals 2 in the equation y equals x over 4 - 7
Alex

The value of x when y = 2 is x = 36

Step-by-step explanation:

The equation that we have in this problem is:

y=\frac{x}{4}-7

In order to find the value of x when y is equal to

y = 2

We need to re-arrange the equation making x the subject.

We proceed as follows:

1) We add +7 on both sides:

y+7=\frac{x}{4}-7+7\\y+7=\frac{x}{4}

2) Now we multiply both  sides by 4:

4(y+7)=\frac{x}{4}\cdot 4\\x=4(y+7)

3) Now we can substitute y = 2 and find the value of x:

x=4(2+7)=4(9)=36

Learn more about equations:

brainly.com/question/13168205

brainly.com/question/3739260

#LearnwithBrainly

5 0
3 years ago
What's the answer to that question
nikdorinn [45]
Can you please put the question?
3 0
3 years ago
Read 2 more answers
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