a). (20 x 80) + (20 x 6) + (7 x 80) + (7 x 6)
Answer:
price for one sticker $3 17 stickers would cost $51
Step-by-step explanation:
39/13=3
$3/sticker
17x3=51
Answer:
28
Step-by-step explanation:
2(3y + 4 + 2) = 196 − 16
6y + 8 + 4 = 196 - 16
6y + 12 = 196 - 16
6y + 12 = 180
6y = 168
y = 28
Best of Luck!
The 7 is in the thousands place, the 8 is in the hundreds place, the 5 is in the tens place, the 2 to the left side if re decimal point is in the ones place, the 2 to the right side of the decimal point is in the tenths place, the 0 is in the hundredths place, and the 9 is in the thousandths place.
Answer:
B
Step-by-step explanation:
The recommended sample size n for point estimates is:
n = NX / (N + X - 1)
where N is the population size, and X is defined as:
X = Z² p (1 - p) / E²
where Z is the critical value, p is the sample proportion, and E is the margin of error.
Assume a confidence level of level of 95% and a margin of error of 5%.
α = 0.05, Z(α/2) = 1.96
E = 0.05
Of the 40 units tested, 2 had lifespans less than 26 days. So the proportion is:
p = 2/40 = 0.05
Therefore:
X = (1.96)² (0.05) (1 - 0.05) / (0.05)²
X = 73
Given N = 2000:
n = (2000) (73) / (2000 + 73 - 1)
n = 70.45
Rounding, the recommended sample size is 70.
