Can i plz have some help with this

Mathematics

2 answers:

Arte-miy333 [17]3 years ago

7 0

Answer:

In this case, the angles are vertical. Option B

Step-by-step explanation:

When angles are adjacent, that means that they are right next to each other.

When angles are vertical, that means the opposite sides are equal.

When angles are supplementary, that means they add up to 180 degrees.

When angles are complementary, that means they add up to 90 degrees.

In this case, the angles are vertical. Option B

Klio2033 [76]3 years ago

4 0

Answer:

I think they're vertical angles

x~Shaun

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If students’ scores were normally distributed and the mean was 200 with a standard deviation of 40, then what is the probability

Sonja [21]

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%.