The first one would be (2x)(7) and plus the other 75 it would be 738 with that in total of it c 5 3-15
Answer: D
Step-by-step explanation: Complementary angles add up to 90 degrees supplementary add up to 180 degrees and vertical angles are like CAF and DAE like how they're diagonal
Answer:
8
Step-by-step explanation:
4/9 of 18 is 8
Answer:
9
Step-by-step explanation:
120=4x=6+7x+15
120=11x+21
-21 -21
99 ÷ 11x
AB=9
Answer:
68% of pregnancies last between 250 and 282 days
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean = 266
Standard deviation = 16
What percentage of pregnancies last between 250 and 282 days?
250 = 266 - 16
250 is one standard deviation below the mean
282 = 266 + 16
282 is one standard deviation above the mean
By the Empirical Rule, 68% of pregnancies last between 250 and 282 days
