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allsm [11]
3 years ago
5

I would like to know what the axis of symmetry is for this question

Mathematics
1 answer:
scZoUnD [109]3 years ago
8 0

Answer:

x = –4

Step-by-step explanation:

x = –koef x / (2•koef x²)

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To reduce 16 ounces of a 25% solution of antiseptic to a 10% solution, how much distilled water should a nurse add?
yan [13]

Answer:

24 ounces

Step-by-step explanation:

Here's a more intuitive approach to use here.

You know that your initial solution has a percent concentration, presumably volume by volume, of  

25

%

. This means that any volume of this solution contains  

1

part solute and  

3

parts solvent.

The target solution must have a concentration of  

10

%

, which means that any volume of this solution will contain  

1

part of solute and  

9

parts solvent.

Your starting solution has a volume of  

16

ounces, or  

4

parts, each with a volume of  

4

ounces.

In order to get to a solution that has a total of  

10

parts, you must add  

6

parts of solvent to the initial solution. Since we know that

1 part  

=

4 ounces

it follows that you must add

6

parts

⋅

4 ounces

1

part solvent

=

24 ounces

of distilled water, which is your solvent, to the initial solution.

The target solution will contain  

1

part solute and  

9

parts distilled water for a total of  

10

parts of solution, and hence have a percent concentration of  

10

%

.

7 0
3 years ago
If cotton candy sells for $4 per bag and the booth is
Kryger [21]

Answer:

Here ya go ! :)

Step-by-step explanation:

4 0
3 years ago
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On a test of 76 ​items, Pedro got 93​% correct.​ (There was partial credit on some​ items.) How many items did he get​ correct?
Firlakuza [10]
You would use the “is/of” method.

93 / 100 = x / 76

Cross multiply and divide:

7068 / 100 = 70.68

This means Pedro got around 70 to 71 questions correct and 5 or 6 questions incorrect.
6 0
3 years ago
HELLPPP PLZZZ ASAP
Alla [95]

Answer: idk how to explain but I learned about tectonic plates and from this picture the boundaries are sliding past each other

Step-by-step explan

6 0
3 years ago
I need somebody help on this test i am Taking
amid [387]

Answer:

ok and thank you for point

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3 years ago
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