Answer:
0.81859
Step-by-step explanation:
We solve using z score method
The formula for calculating a z-score is is z = (x-μ)/σ,
where
x is the raw score
μ is the population mean
σ is the population standard deviation.
Mean 0.8 pound
Standard deviation 0.25 pound
For x = 0.55 pound
z = 0.55 - 0.8/0.25
= -1
Probability -value from Z-Table:
P(x = 0.55) = 0.15866
For x = 1.3 pounds
Z = 1.3 = 0.8/0.25
= 2
Probability value from Z-Table:
P(x = 1.3) = 0.97725
The probability that a randomly selected zucchini will weigh between 0.55 pound and 1.3 pounds is
P(x = 1.3) - P(x = 0.8)
0.97725 - 0.15866
0.81859.
Answer:
i think 32 im not really sure
Step-by-step explanation:
Answer:
3 x^2 +12x-9
Step-by-step explanation:
5x^2 - (2x-3)^2
We need to FOIL the second term
(2x-3)^2 = (2x-3) (2x-3) = 4x^2 -6x-6x+9 = 4x^2 -12x+9
Replacing it in to the original equation
5x^2 - (4x^2 -12x+9)
Distribute the minus sign
5x^2 - 4x^2 +12x-9
Combine like terms
x^2 +12x-9
Answer:
4.4pi
Step-by-step explanation:
the equation to find circumference is the diameter times pi and since the radius is 2.2 multiple by 2 to get 4.4
Answer:
C. 301
Step-by-step explanation:
Since the store marked up the price by 115%. You need to first find what is 100% of 140 and then 15% of 140. 100% of 140 is obviously 140. To find 15% of 140, you take 10%, which is 14, then add half of that which is 7 to 14. 15% of 140 is 21. So you add 140 and 21; it gives you 161, which is 115% of 140. Once you add 161 to 140, it gives you a total of 301.
