8x = 36 + 18y ⇒ -2(8x = 36 + 18y) ⇒ -16x = -72 - 36y
9x = 28 + 4y ⇒ 9(9x = 28 + 4y) ⇒ <u> 81x</u> = <u>252 + 36y</u>
65x = 180

x = 
9x = 28 + 4y
9
= 28 + 4y
9(36) = 13(28 + 4y)
324 = 364 + 52y
-40 = 52y


Answer: x =
, y = 
-884/70
(-884/2)/(70/2) (divide top & bottom by two)
-442/35
*check - bottom can only be divided by 1, 5, and 7.
*1 won't change anything.
*top obviously cannot be divided by 5.
*check if top can be divided by 7.
7*60 = 420
442 - 420 = 22
22 is not divisible by 7.
Therefore, 442 is not divisible by 7.
*Therefore, -442/35 is simplest form.
Answer:
The expected value of the sample mean is the population mean, and the SE of the sample mean is the SD of the population, divided by the square-root of the sample size
Step-by-step explanation:
Answer:
models
Step-by-step explanation: