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Kay [80]
4 years ago
15

There are 4 designd of necklaces available at a jewelry store. Each design is available in 3 types of stones. How many different

combinations of 1 design and 1 stone of necklace can you have?
Mathematics
1 answer:
Ivahew [28]4 years ago
5 0

Answer:

12

Step-by-step explanation

4 designes of necklaces

in 3 different stones

4x3= 12 DIFFERENT DESIGHNES

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blagie [28]

Answer:

m = 6,9  

Step-by-step explanation:

We are given that y = x^m is a solution to given differential equation.

x^2y'' - 14xy' + 54y = 0  

First we 3evaluate the value of:

y'' = m(m-1)x^{(m-2)}

y' = mx^{(m-1)}

Putting these value in the above differential equation, we get,

x^2m(m-1)x^{(m-2)} + 14xmx^{(m-1)} + 54x^m = 0

x^m[m(m-1) -14m + 54] = 0

x^m(m^2 - 15m + 54) = 0

(m^2 - 15m + 54) = 0

(m-9)(m-6) = 0

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Thus, for m = 9,6 , the function y = x^m is a solution of given differential equation.

8 0
3 years ago
The number of pages that Rick can write varies directly with the amount of the time that he spends writing. He can write 5 pages
Gnesinka [82]

Step-by-step explanation:

How many pages can Rick write in 8 hours

= 5 pages / 1/4 hour

= 20 pages / hour

= 20 × 8 / 8 hours

= 160 pages / 8 hours

So, Rick can write 160 pages in 8 hours

3 0
3 years ago
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3 years ago
According to a report from a business intelligence company, smartphone owners are using an average of 20 apps per month Assume t
Eddi Din [679]

Answer: 0.547

Step-by-step explanation:

As per given , we have

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Let \overline{x} be the sample mean.

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The probability that the sample mean is between 19.5 and 20.5 :-

P(19.5

[using standard normal distribution table for z]

Hence, the required probability = 0.547

8 0
3 years ago
Please please help <br> I haven’t had WiFi and I have over 18 days of This
enyata [817]

Answer:

Step-by-step explanation: a= E

b=D

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3 years ago
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