3 years ago

WILL MARK BRAINLIEST. NEED MATH HELP ASAP

1 answer:

3 0

When a quadrilateral is inscribed in a circle, the opposite angles are supplementary.
x + 6x + 19 = 180
7x + 19 = 180
7x = 161
x = 23

Now solve for B.
6(23) + 19 = B
138 + 19 = B
157 = B

The measure of angle B is 157 degrees

Hope this helps =)

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The scale of scores for an IQ test are approximately normal with mean 100 and standard deviation 15. The organization MENSA, whi

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Answer:

B) 47.5%

Step-by-step explanation:

Refer to the normal distribution chart attached. If 130 is 2 standard deviations higher than the mean (ignore the numbers beneath the percentages), then by the empirical rule, this means that 34%+13.5%=47.5% of adults are between IQs of 100 and 130. Therefore, option B is correct.