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maria [59]
3 years ago
5

What is The distance between The points(-6,7) and(-1,1) round to the nearest whole unit

Mathematics
1 answer:
dmitriy555 [2]3 years ago
3 0

Answer:

8

Step-by-step explanation:

using the distance formula

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nataly862011 [7]

Answer:

Step-by-step explanation:

is this in a test

7 0
2 years ago
Suppose 12% of students are veterans. From a sample of 263 students, how unusual would it be to have less than 22 veterans?
kkurt [141]

Answer:

Yes, both np and n(1-p) are ≥ 10

Mean = 0.12 ; Standard deviation = 0.02004

Yes. There is a less than 5% chance of this happening by random variation. 0.034839

Step-by-step explanation:

Given that :

p = 12% = 0.12 ;

Sample size, n = 263

np = 263 * 0.12 = 31.56

n(1 - p) = 263(1 - 0.12) = 263 * 0.88 = 231.44

According to the central limit theorem, distribution of sample proportion approximately follow normal distribution with mean of p = 0.12 and standard deviation sqrt(p*(1 - p)/n) = sqrt (0.12 *0.88)/n = sqrt(0.0004015) = 0.02004

Z = (x - mean) / standard deviation

x = 22 / 263 = 0.08365

Z = (0.08365 - 0.12) / 0.02004

Z = −1.813872

Z = - 1.814

P(Z < −1.814) = 0.034839 (Z probability calculator)

Yes, it is unusual

0.034 < 0.05 (Hence, There is a less than 5% chance of this happening by random variation.

7 0
3 years ago
Does this image show an enlargement or a reduction?
evablogger [386]

Answer:

the image shows reduction

Step-by-step explanation:

the scale chosen is 1.7

6 0
3 years ago
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Tara is trying to solve the following equation 4.5x-4=14
Romashka-Z-Leto [24]

Answer:

4.5x - 4 = 14 \\ 4.5x = 14 + 4 \\ 4.5x = 18 \\ x =  \frac{18}{4.5}  \\ x = 4

8 0
2 years ago
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What is the simplified form of the following expression?(x10)(x2) x8 x12 x20 x100
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I believe the answer would be x20. Between the two parentheses there's a multiplication symbol. So you would just pretend that the parentheses aren't there cause the variable(s) (x) is/are like terms. So you would just multiply 10 times 2 and put out the x back in front of it
6 0
3 years ago
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