Answer:
2,4
Step-by-step explanation:
Answer:
0.26599
Step-by-step explanation:
When given a random number of samples, we solve using this z score formula
z = (x-μ)/σ/√n
where x is the raw score = 268
μ is the population mean = 266
σ is the population standard deviation = 16
n = 25
For x > 268
z = 268 - 266/16/√25
z= 2/16/5
z = 0.625
Probability value from Z-Table:
P(x<268) = 0.73401
P(x>268) = 1 - P(x<268)
P(x>268) = 1 - 0.73401
P(x>268) = 0.26599
The probability that the average pregnancy length of the women in the study is more than 268 days is 0.26599
Answer:
x = 13
Step-by-step explanation:
Since AB = AC , then Δ ABC is isosceles
So the base angles are congruent , both 2x + 15
The sum of the 3 angles = 180° , then
2x + 15 + 2x + 15 + 98 = 180
4x + 128 = 180 ( subtract 128 from both sides )
4x = 52 ( divide both sides by 4 )
x = 13
Answer: y= -1/4x+5
Step-by-step explanation:
A line that is perpendicular must have the opposite reciprocal.
Answer:
C. 20/12 = 100/x
Step-by-step explanation:
The ratio of interest is (fruit juice)/(total liquid) = x/100. The usual way that would be expressed is ...
(12 cups)/(12 cups + 8 cups) = x/100
12/20 = x/100
We note that the only answer choice with the numbers 12, 20, and 100 is C. Checking that against the expected relation above, we see that <em>both sides are inverted</em>, so the proportion of C is equivalent to the one we expect.
