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yarga [219]
3 years ago
8

Y less than 21 write in expresion algebraic

Mathematics
2 answers:
Andreyy893 years ago
5 0

Answer:

y<21

Step-by-step explanation:

Georgia [21]3 years ago
4 0
Greetings.....
       21-y

would be your algebraic expression...

Note.....If your wondering why its not  y-21  instead, read below for clarification...

Up above it stated Y is less than... 
What are they saying.. well, there basically saying the algebra variable ( in other words, the letter y) is LESS THAN 21. 

Since its LESS than 21....221 is GREATER... So...
can you subtract y from 21 if its less?
NO
Can you subtract 21 from Y because y is less?
YES!

Hope this made sense! 
~Queen Hanaenae

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The lifetime of two light bulbs are modeled as independent and exponential random variables X and Y, with parameters lambda and
Scorpion4ik [409]

Answer:

\bf h(x)=max(\lambda,\mu) e^{-max(\lambda,\mu) x}\;(x\geq0)

Step-by-step explanation:

The PDF of X is

\bf f(x)=\lambda e^{-\lambda x}\;(x\geq0)

The PDF of Y is

\bf g(x)=\mu e^{-\mu x}\;(x\geq0)

The means of X and Y are respectively,

\bf \displaystyle\frac{1}{\lambda}\;,\displaystyle\frac{1}{\mu}

so we can see that the larger the parameter, the smaller the mean. Hence the PDF of Z = min(X, Y) is an exponential with the largest parameter of the two.

Therefore, the PDF of Z is

\bf h(x)=max(\lambda,\mu) e^{-max(\lambda,\mu) x}\;(x\geq0)

7 0
2 years ago
A wheel has a radius of 5 ft what is the minimum number of complete revolutions that the wheel must make it to roll at least a 1
stealth61 [152]
If the radius is 5 ft, the circumference is 10 pi or about 31.4

1000 divided by 31.4 = 31.8

So, it should make a minimum of 32 revolutions to reach 1000 feet.
6 0
3 years ago
Read 2 more answers
The difference between city hall and the post office is 6 1/2 miles ( six and one half)city hall is 1 1/3 (one and one fourth NO
Norma-Jean [14]
City hall to post office = 6 1/2 miles  = represented by f
city hall to library site = 1 1/4 miles  = represented by d
library site to post office = unknown. = represented by e

City hall to library site  PLUS library site to post office IS EQUAL to city hall to post office

d + e = f

1 1/4 + e = 6 1/2

find e.
e = 6 1/2 - 1 1/4
e = 13/2 - 5/4
e = (13*2)/(2*2)  - 5/4
e= 26/4 - 5/4
e = (26-5)/4
e = 21/4
e = 5 1/4    distance from library site to post office.
 
To check:
d + e = f

1 1/4 + e = 6 1/2
1 1/4 + 5 1/4 = 6 1/2
6 2/4 = 6 1/2
6 1/2 = 6 1/2



6 0
3 years ago
What is the range of the data? 99.7, 101.8, 103.6,98.6, 100.2, 102.9
erik [133]

Answer:

5.0

Step-by-step explanation:

The data in order looks like so:

98.6, 99.7, 100.2, 101.8, 102.9, 103.6

Take the greatest value and subtract it from the least value to get the range of the data:

103.6-98.6=5

5 is your answer

Hope this helps!

7 0
3 years ago
Read 2 more answers
Please Answer Quick!!
Alexeev081 [22]

Answer:

2 2/3 as an improper fraction is 8/3

8/3 × 1/4 = 2/3

6 0
3 years ago
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