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sergij07 [2.7K]
3 years ago
7

Joey wants to collect 20 coins from foreign countries. If he has 3 coins so far, what percent of his collection is complete?

Mathematics
2 answers:
irinina [24]3 years ago
8 0

Answer:

17%

Step-by-step explanation:

I think you maybe have to subtract

Sphinxa [80]3 years ago
8 0

Answer:

15%

hope this helps!

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48 inches<br> 32 inches<br> 18. Inches <br><br><br> What is the area of the building front?
jarptica [38.1K]
48 inches is the area in the front of the building
7 0
2 years ago
Solve for x<br><br> A. 9<br> B. 10<br> C. 42<br> D. 12
Cloud [144]

Answer:

Option D, 12

Step-by-step explanation:

4x-8=80/2

or, 4x-8=40

or, 4x=48

or, x=12

4 0
2 years ago
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Pythagorean theorem
gulaghasi [49]
3 √10
I think since a^2+b^2=c^2
5 0
2 years ago
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The lengths of nails produced in a factory are normally distributed with a mean of 3.34 centimeters and a standard deviation of
Shtirlitz [24]

Answer:

3.47 and 3.21

Step-by-step explanation:

Let us assume the nails length be X

X \sim N(3.34,0.07^2)

Value let separated the top 3% is T and for bottom it would be B

P(X < T)= 0.97

Now converting, we get

P(Z < \frac{T-3.34}{0.07})= 0.97

Based on the normal standard tables, we get

P(Z < 1.881)= 0.97

Now compare these two above equations

\frac{T-3.34}{0.07} = 1.881 \\\\ T = 1.881 \times 0.07 + 3.34 \\\\ = 3.47

So for top 3% it is 3.47

Now for bottom we applied the same method as shown above

P(Z < \frac{B-3.34}{0.07})= 0.03

Based on the normal standard tables, we get

P(Z < -1.881)= 0.03

Now compare these two above equations

\frac{B-3.34}{0.07} = -1.881

= -1.881 \times 0.07 + 3.34 \\\\ = 3.21

hence, for bottom it would be 3.21

7 0
2 years ago
Never mind (this question has been answered).
Alina [70]

Answer:

What question '='

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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