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Art [367]
3 years ago
7

Which equation below is a direct variation? A. 0.05x = y B. x + 2 = y C. D. y = 2x + 6

Mathematics
1 answer:
evablogger [386]3 years ago
6 0
It’s A because the direct variation formula is y = mx.
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11 The wild tiger population in India increased from 1706 in the year 2010 to
IrinaK [193]
The percentage change is 20%
3 0
3 years ago
What is the Mean Absolute Deviation of the following numbers?<br> 32, 67,83, 15, 89, 32
hram777 [196]

Answer:

53 I believe

Step-by-step explanation:

add all then divide by how much numbers are there

3 0
3 years ago
Lengths of full-term babies in the US are Normally distributed with a mean length of 20.5 inches and a standard deviation of 0.9
mash [69]

Answer:

66.48% of full-term babies are between 19 and 21 inches long at birth

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean length of 20.5 inches and a standard deviation of 0.90 inches.

This means that \mu = 20.5, \sigma = 0.9

What percentage of full-term babies are between 19 and 21 inches long at birth?

The proportion is the p-value of Z when X = 21 subtracted by the p-value of Z when X = 19. Then

X = 21

Z = \frac{X - \mu}{\sigma}

Z = \frac{21 - 20.5}{0.9}

Z = 0.56

Z = 0.56 has a p-value of 0.7123

X = 19

Z = \frac{X - \mu}{\sigma}

Z = \frac{19 - 20.5}{0.9}

Z = -1.67

Z = -1.67 has a p-value of 0.0475

0.7123 - 0.0475 = 0.6648

0.6648*100% = 66.48%

66.48% of full-term babies are between 19 and 21 inches long at birth

5 0
2 years ago
$1,451.02 _____ $1,541.02
Likurg_2 [28]

Answer:

The second number ($1,541.02) is greater

Step-by-step explanation:

In the 100s place of the second number is a 5 and in the first a 4

Even though they have the same 1000s number 500 is larger that 400

7 0
2 years ago
Read 2 more answers
I need help pls!!!!!
belka [17]

Answer:

The sales price is 90% of the regular price.

The regular price is $60

10% of 60 is $6

8 0
2 years ago
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