The mean of 12 numbers is 20 and the mean of another 8 numbers is 25 find the mean of the 20 numbers ​

22

Step-by-step explanation:

mean is calculated as

mean =

Given the mean of 12 numbers is 20 , then

= 20 ( multiply both sides by 12 )

sum = 240

Given the mean of 8 numbers is 25 , then

= 25 ( multiply both sides by 8 )

sum = 200

Total sum of the 20 numbers = 240 + 200 = 440, then mean of 20 numbers is

mean = = 22

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation:

a 270° rotation about point p says on e d g e n u it y (had to space it out because it says it's a misspelling so i couldn't submit it