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mafiozo [28]
3 years ago
13

8. Niko bought penals for each of her 3 friends.

Mathematics
1 answer:
emmasim [6.3K]3 years ago
3 0

Answer:

27

Step-by-step explanation:

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phenytoin comes from the pharmacy as an IV solution of 1000mg/250ml. a loading dose of 700 mg has been ordered. how many millime
Vedmedyk [2.9K]

We can write the following proportion between the milligram and milliliters:

1000\div 250 = 700\div x

Solving for x, we have

x=\dfrac{250\cdot 700}{1000}=175

Intuitively, the original 1000mg/250ml solution tells us that the number of milliliters is one fourth of the number of milligrams.

So, if we want 700mg, we have one fourth of this value for the milliliters:

\dfrac{700}{4}=175

6 0
3 years ago
Quadratic 6X2 + 5X = -7
poizon [28]
Ok, so here your being asked to solve 6x2<span> + 5x = -7 

The procedure that I did was using this formula it led me to get the following:
</span>Using the formula:

x = -(-5) ± √(-5)² - 4(6)(-6)/ 2(6)
x = 5 ± √ 25 + 144 / 12
x = 5 ± √ 169 / 12
x = 5 ± 13/12

x1 = 5 + 13/12
x1 = 18/12
x1 = 3/2

x2 = 5 - 13/12
x2 = -8/12
<span> x2 = - 2/3 

Hope this helped :)</span>
7 0
3 years ago
What is the complete factorization of x2 -5x-14
Shkiper50 [21]
X² - 5x - 14 = (x - 7)(x + 2)
5 0
2 years ago
Read 2 more answers
Whats the best expansion for (x+5a+5b)(x+a-b) ​
jeka57 [31]

Answer:

x² + 6ax + 4bx + 5a² - 5b²

Step-by-step explanation:

(x+5a+5b )(x+a-b) ​

x² +a x -bx +5ax + 5a² -5ab + 5bx + 5ab -5b²

x² + 6ax + 4bx + 5a² - 5b²

4 0
2 years ago
Jane has 10 days to study for four
sammy [17]
10x3=30 hours
30/4= 7.5 hours to study for each exam
5 0
3 years ago
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