Answer:
mean = 5.4
median = 5
mode = is the number that appears the most answer = 5
Step-by-step explanation:
mean
5+6+6+9+10+4+2+5+7+6+7+3+5+5+5+4+9+2+10 = ......... / 19 = 5.4
median
2 2 3 4 4 5 5 5 5 5 6 6 6 7 7 9 9 10 10 then find the middle between these = 5
Answer:
f(x)= -3x² - 12x - 5
Step-by-step explanation:
-3(x+2)² + 7
-3(x+2)(x+2) + 7
(-3x-6)(x+2) + 7
-3x² - 6x - 6x - 12 + 7
-3x² - 12x - 5
Answer:
-3/8
Step-by-step explanation:
(Y1 - Y2)/(X1 - X2) = SLOPE
(1 - -2)/(-5 - 3) = 3/-8
Answer:
The domain of the function is [-9,7] and the range of the function is [-6,4]
By 32,760 different ways can a researcher select 4 rats from 15 rats and assign each to a different test .
<u>Step-by-step explanation:</u>
We need to find How many different ways can a researcher select 4 rats from 15 rats and assign each to a different test.Let's find out:
We will use Permutation here : As we will chose 4 rats out of 15 rats , order will be considered which will make this as a permutation problem . Formula for permutation is given by :
⇒ ![nP_r= \frac{n!}{(n-r)!}](https://tex.z-dn.net/?f=nP_r%3D%20%5Cfrac%7Bn%21%7D%7B%28n-r%29%21%7D)
According to question , we have
⇒ ![15P_4= \frac{15!}{(15-4)!}](https://tex.z-dn.net/?f=15P_4%3D%20%5Cfrac%7B15%21%7D%7B%2815-4%29%21%7D)
⇒ ![15P_4= \frac{15!}{(11)!}](https://tex.z-dn.net/?f=15P_4%3D%20%5Cfrac%7B15%21%7D%7B%2811%29%21%7D)
⇒ ![15P_4= \frac{15(14)(13)(12)11!}{(11)!}](https://tex.z-dn.net/?f=15P_4%3D%20%5Cfrac%7B15%2814%29%2813%29%2812%2911%21%7D%7B%2811%29%21%7D)
⇒ ![15P_4= 15(14)(13)(12)](https://tex.z-dn.net/?f=15P_4%3D%2015%2814%29%2813%29%2812%29)
⇒ ![15P_4= 32,760](https://tex.z-dn.net/?f=15P_4%3D%2032%2C760)
Therefore , By 32,760 different ways can a researcher select 4 rats from 15 rats and assign each to a different test .