Answer:
22.5
Step-by-step explanation:
SINCE Y VARIES DIRECTLY WITH X, WE USE THE FORMULA
y=kx; k representing the variable change, y= 7.5, x=5
> y=kx
>7.5= k(5) > 7.5= 5k
>k= 7.5/5 (divide to get the k)
k= 1.5
NOW REPLACE THE NEW VALUES OF X AND K AS THE VARIABLE CHANGE, TO FIND THE VALUE OF Y
>y=kx ; k=1.5 and x=15 y=?
>y= (1.5)(15)
>y=22.5
the value of y is 22.5 when x is 15
First, find multiples of 2 and 3 in 1-12
2,3,4,6,8,9,10,12
8 out of 12 are a multiple of 2 or 3
8/12
reduce
2/3 is the probability
Hope i help! plz give brainliest if possible
Answer:
see explanation
Step-by-step explanation:
The denominators of the 2 fractions are the same, thus to compare the fractions compare the values on the numerators.
2 is less than 3, hence
< 
Answer:
-s
Step-by-step explanation:
we can make it simple and get rid of the s, so we have 7-8. 7-8 is -1 so we can just add the s back on and get -1s or -s
Answer:
2.0
Step-by-step explanation:
Couldn't really understnd what you wrote but I'll assume it's the standard deviation of a fair, 7-sided die
The standard deviation is just the square root of the variance (which is just the second moment minus the first moment squared)
The first moment (AKA the average is..)
The second moment is..
