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BARSIC [14]
2 years ago
9

Emily has a road map with a key that shows an inch on the map equals 3 miles of actual distance. She will drive on two roads to

get to the beach. One road is 4 inches long on the map. The other road is 4 inches long.
What is the actual distance Emily will drive to the beach? Complete the rule you used to find the actual distance.
Mathematics
1 answer:
77julia77 [94]2 years ago
4 0

Answer:x=60

Step-by-step explanation:

the actual distance which Emily will drive is 60 miles, the rule we used was multiplying by 5 to find the actual distance

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Graph the line, two points to graph Y=4/3x-y
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In recent commercials Toyota claimed that 80% of its vehicles sold in the past 20 years are still on the road. You work for an a
Anvisha [2.4K]

Answer:

Step-by-step explanation:

We have to perform one sample proportion test. To do so we have to proceed through following steps.

(1) We have to collect data about vehicle sales in last 20 years.

(2) Using random number table or random number generator or otherwise we have to select sample of vehicles from the list of sale. In this step, we have to keep an eye on the fact that sample is to be selected from all years (all of 20). Using stratified random sampling by dividing vehicles sold over different years is an effective way to do so. That means, we may divide vehicles sold into 20 homogeneous strata over 20 years and select sample from each strata.

(3) After selecting sample of vehicles we have to communicate to corresponding vehicle owners to gather information about that particular vehicle.

(4) We have to note number of vehicles which are still on the road.

Suppose, we have selected  n vehicles as sample and after communicating we found that \tiny r of those are still on the road.

We have to test for null hypothesis H_0:p=0.80

against the alternative hypothesis H_1 \neq 0.80

Our test statistic is given

z=\frac{\hat p - p_0}{\sqrt{p_0(1-p_0)/n} }

here,

\hat p =\frac{r}{n}

p_0 =0.80

z=\frac{r/n-0.80\sqrt{n} }{0.40} \\\\=2.5(\frac{r}{n} -0.8)\sqrt{n}

We then calculate corresponding p-value.

We reject our null hypothesis if \text{p-value} , level of significance.

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8 0
3 years ago
Chad bought 8 pounds of strawberries for 25.52. What is the cost, C, of 1 pound of strawberries
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I think it would be 3.19.
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5 0
3 years ago
____times 10=662.2<br> ____times 100=403<br> ____times 1000=108
Nutka1998 [239]

Answer:

<u>66.22 </u>times 10=662.2

<u>4.03 </u>times 100=403

<u>0.108 </u>times 1000=108

Step-by-step explanation:

662.2  ÷ 10

403  ÷ 100

108 ÷ 1000

6 0
2 years ago
Read 2 more answers
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