A- 2b = 2 one of the 2 "A" most be negative so they can cancer each other
-a- b = 6 after the "A" cancel each other add the -2b with -b = -3b, then add 2
-------------- and 6
-3b=8 then you have to divide 8 by -3 = -2.6 -2.6 its b... now you have to solve for b step 1. a -2b = 2 step 2. a -2(-2.6)=2 step 3 a -5.3 = 2 then subtract -5.3 with 2 so that going to be 2 + 5.3 =7.3 then divide by a
final answer (-2.5,-7.3)
sorry its kinda hard to explained here, i hope you get the point :)
Answer:
Option c.
Step-by-step explanation:
Using the normal curve to approximate a sampling distribution:
For a sample size n and a proportion n, the normal curve can be used if:
and ![n(1-p) \geq 10](https://tex.z-dn.net/?f=n%281-p%29%20%5Cgeq%2010)
Option a:
![np = 35*0.8 = 28 > 10](https://tex.z-dn.net/?f=np%20%3D%2035%2A0.8%20%3D%2028%20%3E%2010)
![n(1-p) = 35*0.2 = 7 < 10](https://tex.z-dn.net/?f=n%281-p%29%20%3D%2035%2A0.2%20%3D%207%20%3C%2010)
So option a cannot be used.
Option b:
![np = 65*0.9 = 58.5 > 10](https://tex.z-dn.net/?f=np%20%3D%2065%2A0.9%20%3D%2058.5%20%3E%2010)
![n(1-p) = 65*0.1 = 6.5 < 10](https://tex.z-dn.net/?f=n%281-p%29%20%3D%2065%2A0.1%20%3D%206.5%20%3C%2010)
So option b cannot be used.
Option c:
![np = 65*0.8 = 52 > 10](https://tex.z-dn.net/?f=np%20%3D%2065%2A0.8%20%3D%2052%20%3E%2010)
![n(1-p) = 65*0.2 = 13 > 10](https://tex.z-dn.net/?f=n%281-p%29%20%3D%2065%2A0.2%20%3D%2013%20%3E%2010)
So option c can be used, and is the answer
Option d:
![np = 35*0.9 = 31.5 > 10](https://tex.z-dn.net/?f=np%20%3D%2035%2A0.9%20%3D%2031.5%20%3E%2010)
![n(1-p) = 35*0.1 = 3.5 < 10](https://tex.z-dn.net/?f=n%281-p%29%20%3D%2035%2A0.1%20%3D%203.5%20%3C%2010)
So option d cannot be used.
The answer is given by option c.
Answer:
Assuming that all three sides are 9 inches then the answer should 729.
Step-by-step explanation:
Just multiply 9*9*9. The formula to get volume is (length)*(width)*(height).
2/3 is exactly the same as 8/12
Answer:
C
Step-by-step explanation:
A function is where each input has a single output.
(A) There can be a different amount of students in a class (e.g. 21 or 22) that have the same class length
(B) There can be multiple things that Mike can order with $1
(D) There can be multiple students have the same GPA
(C) There is one button for each snack item