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Dima020 [189]
3 years ago
12

If 100 pencils can be sold for $90, then how many pencils are needed to earn $8500?

Mathematics
1 answer:
ira [324]3 years ago
5 0

Step-by-step explanation:

You can set up a proportion.

Let x be the number of pencils needed.

\frac{100}{90} = \frac{x}{8500}

Solve for x.

x = 9444.44 pencils (round it up to 9445 pencils if you need a whole number)

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The domain of u(x) is the set of all real values except 0 and the domain of v(x) is the set of all real values except 2. What ar
muminat

Answer:

Third option

x ≠2 and x cannot be any value for which v(x) = 0

Step-by-step explanation:

In this problem we are asked to find the domain of the function

(UoV)(x)

We know that (UoV)(x) = U(V(x)).

We know that:

Domain of U(x) is all real numbers except <em>x = 0</em>

Domain of V(x) is all real numbers except <em>x = 2</em>.

Then the domain of the composite function U(V (x)) is:

all real numbers except <em>x = 2</em>. (since <em>x = 2</em> does not belong to the domain of V(x) and all values of x for which <em>V(x) = 0</em> (since <em>x = 0</em> does not belong to the domain of U(x))

Finally the domain of (UoV)(x)) is:

x \neq 2 and V(x) \neq 0

4 0
3 years ago
Read 2 more answers
Identify if the following lines are parallel, perpendicular, or neither to the line
pantera1 [17]

The first one is neither

No. 2 is perpendicular (  because  slope = -1/ slope of the other)

No 3 is parallel (both have slope of 3/4)

No 4 is perpendicular.

5 0
3 years ago
If x-a is a factor of polynomial x3-mn2-2nax+na2 prove that a=m+n and a is not = 0
marshall27 [118]

Step-by-step explanation:

hope this helps

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5 0
3 years ago
The m_ACD = (4x + 4)Á and m_ABD = (6x - 14)Á. Find m_ACD.
Temka [501]
From the figure, m<ACD = m<ABD
4x + 4 = 6x - 14
6x - 4x = 4 + 14
2x = 18
x = 9

Therefore, m<ACD = 4(9) + 4 = 40°
6 0
3 years ago
A certain drug dosage calls for 460 mg per kg per day and is divided into four doses (1 every 6 hours). If a person weighs 229 p
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Answer:

11.95 g / 6 hours  

Step-by-step explanation:

drug dosage = 460 mg per kg per day

to be administered every 6 hours to a person who weighs 229 pounds

1 pound = 0.453592 kg

229 pounds = 229 × 1 pound = 229 × 0.453592 kg = 103.873 kg

dosage of drug needed for 103.873 kg

460 mg is to 1 kg per day

103.873 kg = 103.873 × 460 mg per 1 kg per day = 47781.58 mg per 103.873 kg per day

number of 6 hours in a day = 24 hours ÷ 6 hours = 4 times per day

dosage needed per 6 hours

47781.58 ÷ 4 = 11945.395 mg for every 6 hours = 11.95 g / 6 hours  

3 0
4 years ago
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