-10-8a=8-10a
+10 +10
-8a = 18-10a
+10a +10a
2a = 18
2 2
a = 9
You’re supposed to divide the 2 at the end. Hopefully this helped:)
Answer:
white 1: black 3
white 2: black 1
white 3: black 2
Step-by-step explanation:
white 1: the denominator for the x values so it becomes 1-2=-1 which becomes -1/3x +1/4
White 2: same case as the first so we add 1+2=3 3/3=1 so that makes it x+1/4
white 3: there is only one x values that has 4 as the denominator therefore that makes the answer 3/4x+1/3
Answer: aA 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years = (0.163,0.189)
Step-by-step explanation:
Let p = population proportion of adults in the U.S. who have donated blood in the past two years.
Given: A Gallup survey of 2322 adults (at least 18 years old) in the U.S. found that 408 of them have donated blood in the past two years.
Sample size: n= 2322
Sample proportion 
Critical z-value for 90% confidence level : z*=1.645
The confidence interval for population proportion:

A 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years:

Hence,
Answer:
1)
M: 15
T: 14
W: 19
Th: 20
F: 9
Sa: 9
Su: 5
2) 18 degrees
Step-by-step explanation: