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Tresset [83]
3 years ago
9

A chemist is using 331 milliliters of a solution of acid and water. If 15.5% of the solution is acid, how many milliliters of ac

id are there?
Round your answer to the nearest tenth
Mathematics
2 answers:
Arisa [49]3 years ago
8 0

%volume

\tt ml\:acid=15.5\%\times 331\:ml=51.305\:ml\\\\round~to~the~nearest~tenth=51.3~ml

Helen [10]3 years ago
8 0
4 because of your parents you can’t stop to get your phone call stop
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What is a polynomial​
luda_lava [24]

Answer:

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Step-by-step explanation:

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3x - 2y + 3z = -20<br> 4x - 3y - 2z = 7<br> -5x + 5y + z = 9
skelet666 [1.2K]

Answer:

x= 4 y= 7 z= -6

Step-by-step explanation:

solve for one and you get them all

First, I got rid of the z by multiplying common factors (multiplied z by 2) and added equations 2 and 3 together after multiplying by 2

4x - 3y - 2z = 7

-10x+10y+2z= 18

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Then multiplied z by -3 (to get rid of the z) with the original equation 3

3x - 2y + 3z = -20

15x-15y-3z= -27

18x-17y= -47

Next find common thing between the 2 equations we got and multiply it by that and combine (we can multiply first equation by 3 to get rid of the x and solve for y)

-18x+21y= 75

18x-17y= -47

y=7

Work backwards, substitute 7 into the above equation, you get x= 4 and then same for z to get z= -6

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Set notation and interval notation:<br><br> -3 is less than or equal to x, which is less than 5
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