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torisob [31]
3 years ago
6

Rewrite the following equation in standard form. y = 7x + 2

Mathematics
1 answer:
lianna [129]3 years ago
6 0

Answer:

y/7=7x/7+2/7

Step-by-step explanation:

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A map of a park is created on a coordinate plane. Each until on the map represents 1 kilometer. A tennis court is located at (0,
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3 years ago
82,321 to the nearest hundred ?
Lyrx [107]
82,300 because you need to round it to the 100 place
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3 years ago
1. Find the 90% Cl for the population mean if sample
Elden [556K]

Answer:

The answer is below

Step-by-step explanation:

1)

mean (μ) = 12, SD(σ) = 2.3, sample size (n) = 65

Given that the confidence level (c) = 90% = 0.9

α = 1 - c = 0.1

α/2 = 0.05

The z score of α/2 is the same as the z score of 0.45 (0.5 - 0.05) which is equal to 1.65

The margin of error (E) is given as:

E=Z_{\frac{\alpha}{2} }*\frac{\sigma}{\sqrt{n} } =1.65*\frac{2.3}{\sqrt{65} } =0.47

The confidence interval = μ ± E = 12 ± 0.47 = (11.53, 12.47)

2)

mean (μ) = 23, SD(σ) = 12, sample size (n) = 45

Given that the confidence level (c) = 88% = 0.88

α = 1 - c = 0.12

α/2 = 0.06

The z score of α/2 is the same as the z score of 0.44 (0.5 - 0.06) which is equal to 1.56

The margin of error (E) is given as:

E=Z_{\frac{\alpha}{2} }*\frac{\sigma}{\sqrt{n} } =1.56*\frac{12}{\sqrt{45} } =2.8

The confidence interval = μ ± E = 23 ± 2.8 = (22.2, 25.8)

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3 years ago
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Same lol I need English 
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3 years ago
Find an equation for the nth term of the sequence. <br><br> -4, -16, -64, -256, ...
Andrews [41]
This is a geometric sequence  with first term a1 = -4 and common ratio r = 4

so nth term  = a1* r^(n-1)

                   = -4 *4^(n-1)
5 0
3 years ago
Read 2 more answers
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