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Leviafan [203]
2 years ago
5

The following shows the process a student used to determine the number of yards in 3,218 meters. (1 mile = 1,609 meters) (1 mile

= 1,760 yards) Step 1: 1,609 meters is being multiplied by conversion factor 1 mile over 3,218 meters equals 0.5 mile Step 2: 0.5 mile is being multiplied by conversion factor 1760 yards over 1 mile equals 880 yards Step 3: 880 yards What was the error made in this conversion? The 1 mile and 3,218 meters in Step 1 should be switched. The 1,609 meters and the 3,218 meters in Step 1 should be switched. The conversion factor should be added in Step 2 instead of being multiplied. The conversion factor should be divided in Step 2 instead of being multiplied.
Mathematics
2 answers:
Lana71 [14]2 years ago
7 0

Answer:

2341 yards

Step-by-step explanation:

pshichka [43]2 years ago
3 0
2341 yards is the answer
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Quadrilateral ABDE is a rectangle. DE = 4 in. and BD = 6 in. If the rectangle is rotated about a line through CF, cylinder Y is
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Answer:

1 in. is the answer.

Step-by-step explanation:

Solution: A Rectangle ABDE in which DE=4 inches and BD= 6 inches

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2. Second along the Length, Side having length 4 inches,i.e rotated about a line CF, cylinder Y is created.

Radius of cylinder Y= 4/2= 2 inches

Difference in Radii= Radius of cylinder Z  -  Radius of cylinder Y

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Diagram shown below of both the cases:

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2 years ago
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Two processes are used to produce forgings used in an aircraft wing assembly. Of 200 forgings selected from process 1, 10 do not
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Answer:

a.

\bar p_1=0.05\\\bar p_2=0.067

b-Check illustration  below

c.(-0.0517,0.0177

Step-by-step explanation:

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For p_1: T1=10,n1=200

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b. To test for hypothesis:-

i.

H_0:p_1=p_2\\H_A=p_1\neq p_2\\\alpha=0.05

ii.For a two sample Proportion test

Z=\frac{\bar p_1-\bar p_2}{\sqrt(\bar p(1-\bar p)(\frac{1}{n_1}+\frac{1}{n_2})}\\

iii. for \frac{\alpha}{2}=(-1.96,+1.96) (0.5 alpha IS 0.025),

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z=\frac{0.050-0.067}{\sqrt {(0.06\times0.94)\times \frac{1}{500}}}

z=-0.78

c.(1-\alpha).100\% for the p1-p2 is given as:

(\bar p_1-\bar p_2)\pm Z_0_._5_\alpha \times \sqrt   \frac{ \bar p_1(1-\bar p_1)}{n_1}+\frac{\bar p_2(1-\bar p_2)}{n_2}\\\\=(0.05-0.067)\pm 1.645  \times \sqrt \ \frac{0.05+0.95}{200}+\frac{0.067+0.933}{300}\\

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2 years ago
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