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Natalka [10]
3 years ago
12

Students conducted a survey to see which cola was preferred most. People preferred cola A to cola B by a ratio of 9:7. If 108 pe

ople preferred cola A, how many people preferred cola B?
A:123
B:96
C:84
D:78
Mathematics
1 answer:
tigry1 [53]3 years ago
4 0

Answer:

c:84

Step-by-step explanation:

set your equasion to 9/7 = 108/x .solve the equasion and you get 84 for x

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It has been estimated that the population of Indianapolis is growing at a rate of 0.9% per year. Assuming that the population gr
sweet [91]

Hi there!

Ok, so, here are the important facts:

Yearly population growing rate : 0.9%

Population in January 2016 : 1 988 817

Population in January 2019 (3 years later) : x


First off, you need to calculate 0.9% of the population in January 2016 to figure out the number of people it represents :

Saying 0.9% of 1 988 817 is like saying 0.9% times 1 988 817!


\frac{0.9}{100} = \frac{?}{1 988 817}


To solve this, you can use the cross product method :

(1 988 817 × 0.9) ÷ 100 = ?

1 789 935.3 ÷ 100 = ?

17 899.353 = ?


So 0.9% represents a growing rate of 17 899.353 people (we'll keep the decimals just to be more precise in the end).


Now, since you want to know the expected population in January 2019, 3 years later, you need to multiply 17 899.353 by 3 and then add the result to the population number in 2016 :


(17 899.353 × 3) + 1 988 817 = x

53 698.059 + 1 988 817 = x

2 042 515.059 = x

2 042 515 ≅ x (Since we are talking about a population, which represents a certain amout of people, you need to round the number)


Your answer is : The expected population of Indianapolis in January 2019 would be of 2,042,515 people.


There you go! I really hope this helped, if there's anything just let me know! :)

8 0
3 years ago
How many solutions does 4(y-30)=4y+12
Anit [1.1K]

\text{Solve for y:}\\\\4(y-30)=4y+12\\\\4y-120=4y+12\\\\\text{Subtract 4y from both sides}\\\\-120=12\\\\\text{You would see that the y variable is now non-existent}\\\\\text{This means that there are no solutions}\\\\\boxed{\text{No solutions}}

8 0
3 years ago
Pedro has a bag of flour that weighs 9/10 pound. he uses 2/3 of the bag to make gravy. how many pounds of flour does pedro use t
BARSIC [14]
Here is the solution of the given problem above.
First, let's analyze the question. 
Given: 1 bag = 9/10 pound
            2/3 bag = ? pound
What we are going to do is to divide 9/10 pound to 3.
so 9/10 divided by 3 and we get 9/30 and to simplify that, 3/10.
So per 1/3 of the bag, there is 3/10 pound. 
To get the weight for 2/3 of the bag, we multiply 3/10 by 2 and we get 6/10 or to simplify it, it is 3/5. Therefore, the 2/3 bag weights 3/5 pound. Hope this answer helps.
7 0
3 years ago
Read 2 more answers
PLEASE PLEASE HELP ME NO DOWNLOADABLE FILES<br><br> How many solutions <br> y=2x^2+9x
lisabon 2012 [21]

Answer:

There's going to be 2 solutions

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What is the image of (8,7) after a reflection over the line y=-x?
4vir4ik [10]

Answer:

(-7,-8)

Step-by-step explanation:

The original point is (8,7)

To reflect it, just switch their places and change their signs.

So, (-7,-8)

8 0
3 years ago
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