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3 years ago

Allan paid $340 to have his car fixed at an auto-repair shop.

Mathematics

2 answers:

Gala2k [10]3 years ago

3 0

Answer:

5 Hours

Step-by-step explanation:

340 = 215 + 25x

DO INVERSE OPERATIONS ~ MINUS BOTH SIDES OF THE = SIGN

340 - 215 = 125

215 - 215 = 0

125 = 25x

DIVIDE BOTH SIDE NOW

125 / 25 = 5

25x / 25 = 1 = x

5 Hours

RUDIKE [14]3 years ago

3 0

Answer: 5 hours

Step-by-step explanation: $340- $215= $125

25*3= 5

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In a recent survey of 1002 people, 701 said that they voted in a recent presidential election. Voting records show that 61% of e

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Answer:

The 95% confidence interval estimate of the proportion of people who say that they voted

(0.67122 , 0.72798)

Step-by-step explanation:

Step(i):-

In a recent survey of 1002 people, 701 said that they voted in a recent presidential election.

Sample proportion

$p = \frac{x}{n} = \frac{701}{1002} = 0.6996$

Step(ii)

The 95% confidence interval estimate of the proportion of people who say that they voted

$(p^{-} - Z_{0.05} \sqrt{\frac{p(1-p)}{n} } , p^{-} + Z_{0.05} \sqrt{\frac{p(1-p)}{n} } )$

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(0.6996 - 1.96 X 0.01448 , 0.6996 + 1.96 X 0.01448)

(0.6996 - 0.02838 , 0.6996 + 0.02838)

(0.67122 , 0.72798)

Final answer:-

The 95% confidence interval estimate of the proportion of people who say that they voted

(0.67122 , 0.72798)

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3 years ago

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Answer:

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center of circle: O (x.y)

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