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3 years ago

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Will measured the diameter of a penny as 1.9 cm using the ruler. What is the margin of error? 1.5 cm to 2.0 cm 1.5 cm to 2.5 cm

1.85 cm to 1.95 cm 1.90 cm to 1.95 cm

2 answers:

Anna35 [415]3 years ago

9 0

The answer is 1.5cm to 2.0cm

m_a_m_a [10]3 years ago

4 0

Answer:

Hence, the margin of error is:

1.85 cm to 1.95 cm

Step-by-step explanation:

It is given that:

Will measured the diameter of a penny as 1.9 cm using the ruler.

<em>" Now we know that the margin of error is a statistic expressing the amount of random sampling error in a survey's results "</em>

It is an amount (usually small) that is allowed for in case of miscalculation or change of circumstances.

So here we have the margin of error to be:

1.85 cm to 1.95 cm

( since the value of change to the left and right of 19 is same and is small (it is 0.05)

i.e. 1.9-0.05=1.85 cm

and 1.9+0.05=1.95 cm ).

Margin of error is: ± 0.05.

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During a field trip, 60 students are put into equal-sized groups. Describe two ways to interpret 60 ÷ 5 in this problem *

sergeinik [125]

Answer:

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Step-by-step explanation:

From the question we are told that

60 children in equal sized groups

Generally interpreting $60\div 5$ can be mathematically represented as

a)

$x=\frac{60}{5}$

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3 years ago

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Len [333]

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Step-by-step explanation:

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3 years ago

A train from Portland, Oregon, to Los Angeles, California, travels at an average speed of 60 miles per hour and covers a distanc

seropon [69]

Answer:

The train need to leave Portland at 03:27 am

Step-by-step explanation:

step 1

Find out how long it takes the train to travel from Portland, Oregon, to Los Angeles, California

Remember that

The speed is equal to divide the distance by the time

so

The time is equal to divide the distance by the speed

Let

s ---> the speed in miles per hour

d ---> the distance in miles

t ---> the time in hours

$t=\frac{d}{s}$

we have

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substitute

$t=\frac{963}{60}=16.05\ hours$

step 2

Adds 30 minutes (time it takes to get from the train station to her aunt's house)

Remember that

$30\ minutes=0.50\ hours$

$16.05+0.50=16.55\ hours$

Convert to minutes

$16.55\ h=16.55(60)\ min=993\ min$

step 3

Remember that

$8 p.m=20:00\ hrs$

Convert to minutes

$20(60)=1,200\ min$

Subtract 993 minutes from 1,200 minutes

$1,200-993=207\ min$

Convert to hours+minutes

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8 0

3 years ago

WILL MARK BRAINLIEST!!!

denis23 [38]

Answer:

Okay the question is a little unclear, but if he's only doing english, science and history the answer should be <u> 17/40</u>

Step-by-step explanation:

1/5=8/40

3/8=15/40

8/40+15/40=23/40

40/40-23/40=17/40

6 0

2 years ago

Read 2 more answers