2 years ago

Z is..? The problem is attached as a png!

Mathematics

2 answers:

VikaD [51]2 years ago

5 0

Answer:

Step-by-step explanation:

What i would do is multiply both sides by 2z + 1

so you get z-6=20z+10

-19z=16

z=-16/19

Inessa [10]2 years ago

4 0

Answer:

z is every integer and the study of z and its properties is a general understanding save the satisfying of your rate of change

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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

Zina [86]

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.