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3 years ago

If Ben bikes 3 miles and then bikes 1,000 yards back toward his starting point, how many yards is Ben from his starting point?

1 answer:

7 0

1 mile = 1760 yds...so 3 miles is (3 * 1760) = 5280 yds

so if he bikes 5280 yds...and then bikes 1000 yds back....then he would be (5280 - 1000) = 4280 yds from the starting point

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What is the answer to 3 = x/12 + 3?

Citrus2011 [14]

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2 years ago

Ms.Ambrose paid $10 for 1.25 pounds of almonds. How much did the almost cost per pound

love history [14]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

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antoniya [11.8K]

Answer:

The estimate is $- 0.0265\le K \le 0.0465$

Method B this is because the faulty breaks are less

Step-by-step explanation:

The number of microchips broken in method A is $n_1 = 400$

The number of faulty breaks of method A is $X_1 = 32$

The number of microchips broken in method B is $n_2 = 400$

The number of faulty breaks of method A is $X_2 = 32$

The proportion of the faulty breaks to the total breaks in method A is

$p_1 = \frac{32}{400}$

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For this estimation the standard error is

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substituting values

$SE = \sqrt{ \frac{0.08 (1 - 0.08)}{400} + \frac{0.07 (1- 0.07 )}{400} } }$

$SE = 0.0186$

The z-values of confidence coefficient of 0.95 from the z-table is

$z_{0.95} = 1.96$

The difference between proportions of improperly broken microchips for the two breaking methods is mathematically represented as

$K = [p_1 - p_2 ] \pm z_{0.95} * SE$

substituting values

$K = [0.08 - 0.07 ] \pm 1.96 *0.0186$

$K = - 0.0265 \ or \ K = 0.0465$

The interval of the difference between proportions of improperly broken microchips for the two breaking methods is

$- 0.0265\le K \le 0.0465$

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2 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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