2 years ago

Identify the percent of change from 2/5 to 1/3 as an increase or a decrease.

Mathematics

1 answer:

Harrizon [31]2 years ago

5 0

Answer:

V1 2 and V2 1

Step-by-step explanation:

look at the picture above to get ur answer

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$390

Step-by-step explanation:

$2,080 / 32 = 65

65 x 6 = $390

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What number is 15% of 130

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To find 15% of 130=
130 x 0.15=
19.5

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How many intersections are there of the graphs of the equations below?<br><br> One-halfx + 5y = 6

andre [41]

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2 years ago

The distribution of scores on a recent test closely followed a Normal Distribution with a mean of 22 points and a standard devia

maksim [4K]

6.68% of the students scored at least 19 points on this test while the 85 percentile has a test score of 24.08 points

The z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:

$z=\frac{x-\mu}{\sigma} \\\\where\ \mu=mean.\sigma=standard\ deviation, x=raw\ score\\\\Given\ that\ mean(\mu)=22,standard \ deviation (\sigma)=2\\\\For\ x>19:\\\\z=\frac{22-19}{2}=1.5$

P(x > 19) = P(z > 1.5) = 1 - P(z < 1.5) = 1 - 0.9332 = 0.0668

6.68% of the students scored at least 19 points on this test

b) 85 percentile corresponds to a z score of 1.04

$z=\frac{x-\mu}{\sigma}\\\\1.04 =\frac{x-22}{2} \\\\2.08=x-22\\\\x=24.08$

The 85 percentile has a test score of 24.08

Find out more at: brainly.com/question/25012216

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2 years ago