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bulgar [2K]
3 years ago
15

1×1+9×(1/100)+1 ×(1/1,000)

Mathematics
2 answers:
Fittoniya [83]3 years ago
8 0
Using PEMDAS
P = 1x1+9x(0.01)+1x(0.001)
E = no change
M = 1+0.09+0.001
D = no change
A = 1.091
S = no change
final answer is 1.091
WINSTONCH [101]3 years ago
6 0

Answer:

  • 1.091 because of PEMDAS or (parentheses) x^{2} exponents, *multiplication, / division + addition - subtraction

Step-by-step explanation:

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To obtain information on the corrosion-resistance properties of a certain type of steel conduit, 45 specimens are buried in soil
Fiesta28 [93]

Answer:

The sample has not met the required specification.

Step-by-step explanation:

As the average of the sample suggests that the true average penetration of the sample could be greater than the 50 mils established, we formulate our hypothesis as follow

H_0: The true average penetration is 50 mils

H_a: The true average penetration is > 50 mils

Since we are trying to see if the true average is greater than 50, this is a right-tailed test.

If the <em>level of confidence</em> is α = 0.05 then the z_\alpha score against we are comparing with, is 1.64 (this is because the area under the normal curve N(0;1) to the right of 1.64 is 0.05)

The z-score associated with this test is

z=\frac{\bar x-\mu}{s/\sqrt{n}}

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s = <em>standard deviation of the sample</em>

n = <em>size of the sample</em>

Computing this value of z we get z = 3.42

Since z >z_\alpha we can conclude that the sample has not met the required specification.

5 0
3 years ago
Divide 30 in a ratio of 3:2
pogonyaev
3+2=5
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3 years ago
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Explanation:

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Answer: C) f(-4) = 54

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Step-by-step explanation:

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f(-4) = 7 ( 3 - (-4)) +5

f(-4) = 7 ( 7 ) + 5

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f (-4) = 54

4 0
3 years ago
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