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zheka24 [161]
3 years ago
10

What is the unit rate in miles per hour for each runner?

Mathematics
1 answer:
lana66690 [7]3 years ago
4 0
Terrance: 12 miles/1 hour
Jesse: 8 miles/1 hour

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Step-by-step explanation:

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The ratio table below shows the relationship between the number of bricks in a wall and the length of the wall.
Elza [17]

Answer:

When number of bricks is multiplied by 2, the length is multiplied by

B) 2

Step-by-step explanation:

Number of bricks is two times the length of the wall

i.e. Number of bricks= 2×Length of the wall

When the number of bricks is multiplied by 2, the length is also multiplied by 2

since, when number of bricks=6 then, length of wall=3

and when number of bricks=2×6=12 then, length of wall=2×3=6

Hence, when number of bricks is multiplied by 2, the length is multiplied by

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Suppose that 1 month before the election a random sample of 500 registered voters are surveyed. From this sample 270 indicate th
Aleonysh [2.5K]

Answer:

[ 0.4964, 0.5836 ]

Step-by-step explanation:

Data provided in the question:

Total sample size = 500

person voting for smith = 270

thus,

P( person voting for smith ), p = \frac{270}{500} = 0.54

Confidence level = 95%

now,

standard error, SE = \sqrt{\frac{p(1-p)}{n}

or

SE = \sqrt{\frac{0.54(1-0.54)}{500}

or

SE = 0.0223

now,

Confidence interval = p ± ( z × SE )

here,

z value for 95% confidence interval is 1.96

Confidence interval = [ 0.54 - ( 1.96 × 0.0223 ), 0.54 + ( 1.96 × 0.0223 ) ]

= [ 0.54 - 0.0436 , 0.54 + 0.0436 ]

= [ 0.4964, 0.5836 ]

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3 years ago
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