3/4 = x/10 Please write the answer in decimal form. X = ?

Mathematics

2 answers:

Morgarella [4.7K]3 years ago

8 0

Answer:

x=7.5

Step-by-step explanation:

To solve this, cross multiply

3/4=x/10

4*x=3*10

4x=30

Divide by 4 on both sides

x=7.5

Hope this helps! :)

Wewaii [24]3 years ago

7 0

Answer:

x=7.5

Step-by-step explanation:

3/4 is 75% so therefore x/10 has to be the same

75% of 10 is 7.5

So therefore x=7.5

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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: