Answer:28
Step-by-step explanation:
Since x+32 is 90 degrees, you subtract 32 from both sides to get the remaining which is 28 degrees.
17128.........................
Answer:
84%
Step-by-step explanation:
The empirical rule tells you that 68% of the standard normal distribution is within 1 standard deviation of the mean. The distribution is symmetrical, so the amount in the lower tail is (1 -68%)/2 = 16%.
Since the number you're interested in, 240, is one standard deviation above the mean (200 +40), the percentage of interest is the sum of the area of the central part of the distribution along with the lower tail:
68% + 16% = 84%.
Each child has a 50% chance to be a girl and 50%chance to be a boy so with 4 children the probability is