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horrorfan [7]
2 years ago
6

Help me. Please ;-; i need 20 characters ;-;

Mathematics
1 answer:
Afina-wow [57]2 years ago
6 0

Answer:

I need more context

Step-by-step explanation:

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5.6 - 0.105 = 5.505 What's The answer
adelina 88 [10]
<span>5.505 thats the answer it says equals</span>
6 0
3 years ago
12a. Shan has 32 books, including 12 books by his favorite author. Express as a decimal the number of books by his favorite auth
LenaWriter [7]

12a. First expressing as a fraction, Shan has 12/32 books from his favorite author, so:

12/32=3/8=0.375 books from his favorite author

12b. Because the decimal 0.375 isn't a periodical decimal, so it would be a terminating decimal.

5 0
1 year ago
The area of a rectangle is 2x*2-13x+12 and another area is 6x^2-13x+21, what is the combined area of both rectangles?
saul85 [17]

Answer:

8x^2 - 26x + 33

Step-by-step explanation:

Add the expressions.

2x^2 - 13x + 12 + 6x^2 - 13x + 21 =

= 2x^2 + 6x^2 - 13x - 13x + 12 + 21

= 8x^2 - 26x + 33

8 0
2 years ago
What is the median of the following set of numbers?
stealth61 [152]
To find the median, we must order the numbers. 

12,12,13,13,14,15,16,17,18,19

Now see which one is in the middle. 

We are stuck between 14 and 15, so what is between those?
14.5 is between 14 and 15, so that is the median. 

Answer: 14.5 is the median 

7 0
3 years ago
The life of a semiconductor laser at a constant power is normally distributed with a mean of 7,000 hours and a standard deviatio
Scrat [10]

This question not incomplete

Complete Question

The life of a semiconductor laser at a constant power is normally distributed with a mean of 7,000 hours and a standard deviation of 600 hours. If three lasers are used in a product and they are assumed to fail independently, the probability that all three are still operating after 7,000 hours is closest to? Assuming percentile = 95%

Answer:

0.125

Step-by-step explanation:

Assuming for 95%

z score for 95th percentile = 1.645

We find the Probability using z table.

P(z = 1.645) = P( x ≤ 7000)

= P(x<Z) = 0.95

After 7000 hours = P > 7000

= 1 - P(x < 7000)

= 1 - 0.95

= 0.05

If three lasers are used in a product and they are assumed to fail independently, the probability that all three are still operating after 7,000 hours is calculated as:

(P > 7000)³

(0.05)³ = 0.125

7 0
3 years ago
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