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weqwewe [10]
3 years ago
5

SOMEONE PLEASE HELP WITH THESE QUESTIONS!! I don’t mind which one(s) you do I just need as much help as I can get thank you !!

Mathematics
1 answer:
o-na [289]3 years ago
5 0

1. Use the FOIL (first, outside, inside, last) method:

F: x*x=x^2

O: x*-2=-2x

I: 3*x=3x

L: 3*-2=-6

x^2-2x+3x-6

<em>*Combine like terms*</em>

x^2+x-6

2. Look for the greatest common factor (GCF) of 15 and 5.  It is 5 (15/5=3 and 5/5=1)

5(3x+1)

3. You want to find two numbers whose product is 6 and whose sum is -5.  -3 and -2 complete these requirements.

(x-3)(x-2)

4. Solve for x:

<em>*Add x to both sides*</em>

y+x=ab

<em>*Subtract y from both sides*</em>

x=ab-y

8. Plug in 0.5 for x and solve:

10-8(0.5)

10-4

6

10. <em>*Multiply both sides by 5*</em>

2x-3=20

<em>*Add 3 to both sides*</em>

2x=23

<em>*Divide both sides by 2*</em>

x=23/2

I did what I could.  Hope I could help!!

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Answer:

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Step-by-step explanation:

The first step of the problem is the conversion of the quantities of the drug in mg and mL to ug and uL.

In a rule of three problem, the first step is identifying the measures and how they are related, if their relationship is direct of inverse.

When the relationship between the measures is direct, as the value of one measure increases, the value of the other measure is going to increase too.

When the relationship between the measures is inverse, as the value of one measure increases, the value of the other measure will decrease.

Unit conversion problems, like this one, is an example of a direct relationship between measures.

First step: Conversion of 125mg to ug

Each mg has 1,000ug. So:

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x = 1,000*125

x = 125,000 ug

Second step: Conversion of 25 mL to uL

Each mL has 1,000uL. So:

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x = 25*1,000

x = 25,000uL

Concentration:

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The concentration of the drug is 5ug/uL

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4 years ago
What are the coordinates of the Image of point M under a Reflection across the y-axis?
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