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mamaluj [8]
3 years ago
12

In the lab, Debra has two solutions that contain alcohol and is mixing them with each other. Solution A is 10% alcohol and Solut

ion B is 50% 2400 milliliters of Solution A. How many milliliters of Solution B does she use, if the resulting mixture is a 20% alcohol solution?
Mathematics
1 answer:
Ivahew [28]3 years ago
3 0

Answer:

  800 mL

Step-by-step explanation:

Let b represent the amount of solution B added to 2400 mL of solution A. The total amount of alcohol (mL) in the mixture is ...

  10%×2400 + 50%×b = 20%×(2400 +b)

multiplying by 100 to get rid of the % signs and simplifying, we have ...

  24000 +50b = 48000 +20b

  30b = 24000 . . . . . . . . . subtract 24000+20b

  b = 800 . . . . . . . . . . . . . . divide by 30

Debra added 800 mL of 50% alcohol to her 2400 mL of 10% alcohol to make a 20% solution.

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You are rolling two dice. When the two numbers (1-6) come up, you multiply the numbers
Tasya [4]

Answer:

1/4 probability of getting a product that isn't divisible by 2.

Step-by-step explanation:

These are all the possible outcomes

1 x 1 = 1    2 x 1 = 2    3 x 1 = 3     4 x 1 = 4     5 x 1 = 5      6 x 1 = 6

1 x 2 = 2   2 x 2 = 4   3 x 2 = 6     4 x 2 = 8    5 x 2 = 10    6 x 2 = 12

1 x 3 = 3  2 x 3 = 6    3 x 3 = 9     4 x 3 = 12   5 x 3 = 15   6 x 3 = 18

1 x 4 = 4   2 x 4 = 8   3 x 4 = 12     4 x 4 = 16   5 x 4 = 20  6 x 4 = 24

1 x 5 = 5   2 x 5 = 10  3 x 5 = 15   4 x 5 = 20  5 x 5 = 25  6 x 5 = 30

1 x 6 =  6   2 x 6 = 12  3 x 6 = 18   4 x 6 = 24   5 x 6 = 30  6 x 6 = 36

All of the outcomes that aren't divisible by 2 are in bold

There are 9 out of 36 possible outcomes that aren't divisible by 2

9/36 = 1/4

8 0
4 years ago
1. The area of a circle is 60 square units. What is the area of ...
AVprozaik [17]

Multiply the area of the circle by the percentage:

60 square units x 50% = 60 x 0.50 = 30

50% 0f the circle id 30 square units.

3 0
2 years ago
If a || b and_____then a ll c<br><br> bla<br><br> alc<br><br> bllc<br><br> bic
hram777 [196]

Answer:

b ll c

Step-by-step explanation:

ycgjgjccgkcgjgcjgjcgjggcjgjctj

3 0
3 years ago
Read 2 more answers
What is the side length, s, of the square? Enter your answer in the box. Blue sqaure with area of 81m² m
Ne4ueva [31]

Answer: 9m

Step-by-step explanation:

7 0
3 years ago
A Genesse High School, the Sophomore class has 60 more students than the Freshmen class. The junior class has 50 fewer students
alexira [117]
1427 = (F) (+ F + 60) (2F - 50) (+ 3F)
<em>Each pair of brackets represents one of the classes - F meaning Freshmen Class. It has been split into brackets for demonstrational purposes - nothing is being multiplied.</em>
F is an unknown number and each other class size is based off of that so we put it in algebraic terms in order to work it out.
1 - Freshmen Class
2 - Sophomore Class (Freshmen Class + 60 more students)
3 - Junior Class ( Twice the size of the Freshmen Class - 50 students)
4 - Senior Class (Three times the size of the Freshmen Class)

All this can be simplified to 7F + 10 = 1427
1427 - 10 = 1417
1417/7 = 202.428....

Is there a mistake in the question?

Following the question with 202 as the answer - the number 1424 is reached
If increased to 203 - 1431 is reached.
The answer shouldn't include half a person.

3 0
3 years ago
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