Approximately 95% of bags contain between 65 and 85 potato chips.
<u>Step-by-step explanation</u>:
step 1 :
Given,
The mean, M = 75
Standard deviation, SD = 5
step 2 :
From Normal distribution,
The left side of mean is 32% = M-SD, 16% = M-2SD and 2% = M-3SD
The right side of mean is 32% = M+SD, 16% = M+2SD and 2% = M+3SD
step 3 :
Calculate for left side: M-SD = 75-5 = 70 and M-2SD = 75-10 = 65
Calculate for right side: M+SD = 75+5 = 80 and M+2SD = 75+10 = 85
step 4 :
Calculate the percentage between 65 and 85:
(M-SD) + (M-2SD) + (M+SD) + (M+2SD) = 32% + 16% + 32% + 16%
= 96 % (which is approximately 95 %)
Answer:
b
Step-by-step explanation:
Answer:
Well, if you just guess and check, this problem is very easy to solve. But of course we don't want that. Using an equation, we could solve this easily. We're saying the twice the x (smaller angle for the two supplementary angles) + 30 equals the bigger one. Two supplementary angles equals 180 degrees. So, 3x+%2B+30+=+180. Why is it 3x + 30, you ask? because 2x + 30 is only one of the supplementary angles, so we have to have another x, which is the smaller one. 3x + 30 = 180. Subtract 30 on each side and divide 3 on each side, and you'll be left with x = 50. So the smaller angle is 50, so obviously 180 - 50 = 130. So angles are 130 and 50.
Step-by-step explanation:
Answer:
x - 6
Step-by-step explanation:
If the unknown number is x then decreasing it by 6 means subtracting 6 from it , so the expression is
x - 6
