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photoshop1234 [79]
3 years ago
9

2. A chemist has a 25% and a 50% acid solution. How

Mathematics
1 answer:
AnnZ [28]3 years ago
7 0

Answer:

x is mL of 25% acid and y is mL of 50% acid

We set up 2 equations:

A) x + y = 250

B) .25 x + .50y = .35 * 250 which equals

B) .25x + .50y = 87.50  Multiplying A) by -.5

A) -.5x -.5y = -125  adding the equations we get

-.25x = -37.50

x = 150 mL

y = 100 mL

Source:  http://www.1728.org/mixture.htm

Step-by-step explanation:

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gayaneshka [121]

Answer:

the probability of not winning is 0.9946

Step-by-step explanation:

The computation of the probability of not winning is shown below:

The Probability of winning is

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= (1302 - 7) ÷ 1302

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The same is considered

6 0
3 years ago
a square sandbox has an area of 42 squareft what is the approximate perimeter of the sandbox to the nearest hundredth
Ugo [173]

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3 0
3 years ago
Help me, cause I'm tuck
r-ruslan [8.4K]

Answer:

The answer would be 1.33 x 10^{4}

Step-by-step

1.28 x 10^{4} = 12800

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13300 = 1.33 x 10^{4} in scientific notation

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8 0
3 years ago
Write the absolute value inequality in the form |x-b| c that has the solution set x<-5 or x>7.
Daniel [21]
Answer:
|x - 1| > 6
Step-by-step explanation:
b is the centre:
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2 years ago
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zmey [24]

Answer:

the second one

Step-by-step explanation:

7 - (2m - 5)

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