hi
square roots of 196 is : 14 and -14 as 14² = 196 and (-14)² = 196
Answer:
Using the combination formula:
Number of combination of r object chosen from the total object i.e n is given by:
![\frac{n!}{r! \cdot (n-r)!}](https://tex.z-dn.net/?f=%5Cfrac%7Bn%21%7D%7Br%21%20%5Ccdot%20%28n-r%29%21%7D)
As per the statement:
4 candy bars be chosen from a store that sells 30 candy bars
Number of candy bars chosen from a store that sells 30 candy bars(r)= 4
and
Total candy bars(n) = 30
then substitute in the given formula we have;
![\frac{30!}{4! \cdot (30-4)!}](https://tex.z-dn.net/?f=%5Cfrac%7B30%21%7D%7B4%21%20%5Ccdot%20%2830-4%29%21%7D)
⇒![\frac{30!}{4! \cdot (26)!}](https://tex.z-dn.net/?f=%5Cfrac%7B30%21%7D%7B4%21%20%5Ccdot%20%2826%29%21%7D)
⇒![\frac{30 \cdot 29 \cdot 28 \cdot 27 \cdot 26!}{1 \cdot 2 \cdot 3 \cdot 4 \cdot (26)!}](https://tex.z-dn.net/?f=%5Cfrac%7B30%20%5Ccdot%2029%20%5Ccdot%2028%20%5Ccdot%2027%20%5Ccdot%2026%21%7D%7B1%20%5Ccdot%202%20%5Ccdot%203%20%5Ccdot%204%20%5Ccdot%20%2826%29%21%7D)
Simplify:
⇒![\frac{657720}{24} = 27,405](https://tex.z-dn.net/?f=%5Cfrac%7B657720%7D%7B24%7D%20%3D%2027%2C405)
therefore, 27,405 ways can 4 candy bars be chosen from a store that sells 30 candy bars
The third one if you try and solve that on a graph it will be harder.
5x-1 = 4x-8
-4x= -4x
x-1=-8
+1 = +1
X=-7
Answer:
2 minutes.
Step-by-step explanation:
Hope it helps
Answer:
159.68
Step-by-step explanation:
68% of 499 is 339.32
499 -339.32=159.68
hope this helps