MATHEMATICS MIDDLE SCHOOL

2 A pharmacist has a 13 % alcohol solution and another 18 % alcohol solution. How much of each must he use to make 50 grams of a 14 % alcohol solution

Answers

Answer 1
Answer:

Therefore he took 40 gram of 1^(st) type solution and 10 gram of 2^(nd) type solution.

Step-by-step explanation:

Giventhat , A pharmacist 13% alcohol solution another 18% alcohol solution .

Let he took x gram solution of 1^(st) type solution

and he took (50-x) gram of 2^(nd) type solution.

Total  amount of alcohol =[x*(13)/(100)] +[(50 -x) *(18)/(100) ] gram

Total amount of solution = 50 gram

According to problem

⇔( [x*(13)/(100)] +[(50 -x) *(18)/(100) ])/(50)= (14)/(100)

⇔(13x +900-18x)/(100*50) =(14)/(100)

⇔- 5x= 700 - 900

⇔5x = 200

⇔x = 40 gram

Therefore he took 40 gram of 1^(st) type solution and (50 -40)gram = 10 gram of 2^(nd) type solution.
Answer 2
Answer:

Answer:

40 of first and 10 of second

Step-by-step explanation:

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Answer:

x is 100 degrees because vertical angles are congruent

4-9x= -14 solve the inequality.

Answers

The solution to the given inequality 4 - 9x ≤ -14 is x ≥ 2.

To solve the inequality 4 - 9x ≤ -14, we can follow these steps:

Step 1: Subtract 4 from both sides of the inequality:

4 - 4 - 9x ≤ -14 - 4

-9x ≤ -18

Step 2: Divide both sides of the inequality by -9. Remember, when dividing by a negative number, we need to reverse the inequality sign:

(-9x) / -9 ≥ (-18) / -9

x ≥ 2

Therefore, the solution to the inequality 4 - 9x ≤ -14 is x ≥ 2.

This means that any value of x that is greaterthan or equal to 2 satisfies the inequality.

Learn more about inequalities here:

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The correct question is as follows:

Solve the inequality.

4-9x ≤ -14

4 - 9x = -14
4 - 4 - 9x = -14 - 4
9/9x = -18/9
x = -2

What is .72 as a fraction is its simplest form?

Answers

18 over 25 just put it over 100 and simplify and you get 18/25

72%=72/100=36/50=18/25

have a good day, I hope it helps

Elizabeth has two identical number cubes. Both cubes have faces numbered 1 thourgh 6. if Elizabeth rolls each cube once, what is the probability that the sum of the two numbers on the top faces will be 10.

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I believe the answer is 4 out of 12.

What is 3,397 rounded yo the nearest thousand

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Rounding 3,397 to the nearest thousand would be 3,000 
It would be 3000 becuase round the 3 in the hundres place to the nearest place and it would be a zero

What is 862.473 rounded to the nearest whole number?

Answers

Your answer is 862.
862 is 862.473 rounded to the nearest whole number.
You could also see this as "860"
900 is 862.473 rounded to the nearest whole number.
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