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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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How do I write in standard form 700000 + 20000 + 4000 + 500 + 60 + 2
Inga [223]

All you have to do is just bring the numbers that are not zero from each digit.

so in this process, the answer you would get is 724,562.

I hope this helped


5 0
3 years ago
Read 2 more answers
Industry standards suggest that 8 percent of new vehicles require warranty service within the first year. Jones Nissan in Sumter
jenyasd209 [6]

Answer:

Step-by-step explanation:

Let X be the no of vehicles that require warranty service within I year out of vehicles sold (9) yesterday.

Each vehicle is independent of the other to get warranty service

Hence X is binomial with p=8% = 0.08

So P(X=x) = 9Cx (0.08)^x (1-0.08)^{9-x} ,x=0,1,2...9

a) P(X=0) = 0.472161\\b) P(x=1) = 0.3695

c) P(X=2) = 0.1285

d) Mean = Mean of binomial = np =

9(0.08) = 0.72

Var (x) = npq = 0.6624

Std dev = square root of variance = 0.8139

5 0
3 years ago
Read 2 more answers
a bag of peaches has 3 more than 2 times the number of bananas in a bag of bananas. if there are 17 peaches in a bag, how many b
Harlamova29_29 [7]

this can be turned into an equation to be solved more easily. so the amount of bananas can be x. there are 17 peaches. So the equation would be:

(17 - 3) ÷ 2 = x

you begin with what's inside the parenthesis

17 - 3 = 14.

14 ÷2 = 7

x = 7

there are 7 bananas in the bag of bananas

7 0
3 years ago
Yellow Taxi Cabs charges a $7 flat rate in addition to $2.25 per mile. Kate has $100 to spend on transportation. How many miles
enyata [817]
Kate can travel 41.33 miles without exceeding her limit. This problem can be solved by using y = 2.25x  + 7 linear equation with the "y" variable as the total cost that Kate must pay after she has traveled with the cab and the "x" variable as Kate's traveling distance. The equation has 7 for its constant value which is the $7 flat rate. We will find 41.33 miles as the traveling distance if we substituted the total cost with 100, which is the maximum amount that can be paid by Kate for the traveling purpose.
7 0
3 years ago
An $42 item was marked down by 50%<br><br> what is the new cost of the item?
Nataly_w [17]

Answer:

New Cost of item is \$ 21

Step-by-step explanation:

Given:

Original Cost of item = \$ 42

Item was marked down by 50\%

To Calculate Cost after 50\% marked  down we need to multiply original cost by 50 and then divide by hundred.

Cost after  marked down = \frac{42 \times 50}{100}= \$21

Now New cost of the item is calculated by Subtracting Cost after 50\% marked down by Original Cost of item.

New cost of the item =  \$ 42 - \$ 21 = \$21

7 0
3 years ago
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