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MissTica
3 years ago
8

Tim's bank contains quarters, dimes and nickels. He has 3 more dimes than quarters and 6 fewer nickels than quarters. If he has

63 coins, write and solve an equation for how many quarters Tim has.
Mathematics
1 answer:
Artist 52 [7]3 years ago
8 0
(x - 3) + (x - 6) + x = 63
x - 3 + x - 6 + x = 63
Combine like terms
3x - 9 = 63
Isolate the constant
3x - 9 + 9 = 63 + 9
3x = 72
Isolate the viable
3x / 3 = 72 / 3
x = 24
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How many milliequivalents of sodium chloride are contained with 3 L of normal saline?
AVprozaik [17]

Answer:

466mEq

Step-by-step explanation:

First, we need to know the concentration of NaCl in a normal saline solution, this is by definition 0.9%, meaning we have 0.9g of NaCl per 100ml of solution, we want to know how much NaCl we have in 3L (3000ml):

3000ml*\frac{0.9g}{100ml}=27g=27000mg

So, we have 27000mg in 3L of normal saline solution.

Now, acording to our milliequivalent (mEq) equation (mEq=\frac{mg}{pE}) where pE is de molecular mass of NaCl divided by their charges, in this case 1:

pE= \frac{23+35}{1}=\frac{58}{1} = 58

Finally we substitute in the mEq formula:

mEq=\frac{mg}{pE}=\frac{27000}{58}=466mEq

I hope you find this information useful! Good luck!

4 0
3 years ago
Box and tail set up for:
Aleksandr-060686 [28]

Answer:

Step-by-step explanation:

Assuming that all of the 255 sold seats were filled, then

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(225/260)*100=86.53%

100%-86.53%=13.4%

13.4% of seats are empty!

3 0
4 years ago
Frank says that for any whole number n, the value of 6n-1 is always prime. Is Frank correct? Explain your answer.​
Lady bird [3.3K]

Answer:

Frank is wrong

Step-by-step explanation:

6(6) - 1 = 35

35 is a multiply by 5 so it is not a prime number.

8 0
4 years ago
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aliya0001 [1]

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Step-by-step explanation:

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3 years ago
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avanturin [10]

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4 0
3 years ago
Read 2 more answers
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