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egoroff_w [7]
3 years ago
9

100 POINTS AND BRAINLIEST IF RIGHT A survey asked 12 students how many portable electronic devices they have in their homes. The

results are shown in the line plot below. Based on the data in the line plot, calculate the following and show your work e) What percentage of the students have more than 3 portable electronic devices in their home?https://learning.k12.com/d2l/le/dropbox/703031/3224876/DownloadAttachment?fid=25970083 i need E done at the very bottom

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
6 0

Answer:

¾

Step-by-step explanation:

More than 3: 9

P(more than 3) = 9/12 = ¾

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What is the area of the figure? Use 3.14 for π. Round to the nearest hundredth if necessary.
vfiekz [6]

Answer:

81.12 cm²

Step-by-step explanation:

The area for a semicircle can be figured with this formula: (πr²)/2. The triangle's area formula is bh/2.

(3.14 * 4²)/2 + (14 * 8)/2 <em>(Work the operations in parentheses first.)</em>

(3.14 * 16)/2 + 112/2

50.24/2 + 112/2 (<em>Divide 50.24 by 2. Do the same for 112.)</em>

25.12 + 56 (<em>Add 25.12 & 56.)</em>

81.12 cm²

The area of the figure is 81.12 cm².

7 0
3 years ago
An equation for the depreciation of a car is given by y = A(1 – r)t , where y = current value of the car, A = original cost, r =
Mamont248 [21]
<h2>The car is about 6.6 years old.</h2>

Step-by-step explanation:

Given : An equation for the depreciation of a car is given by y = A(1-r)^t, where y = current value of the car, A = original cost, r = rate of depreciation, and t = time, in years. The value of a car is half what it originally cost. The rate of depreciation is 10%.

To find : Approximately how old is the car?

Solution :

The value of a car is half what it originally cost i.e. y=\frac{1}{2} A

The rate of depreciation is 10% i.e. r=10%=0.1

Substitute in the equation, y = A(1-r)^t

\frac{1}{2} A= A(1-0.1)^t

\frac{1}{2}= (0.9)^t

Taking log both side,

\log(\frac{1}{2})=t\log (0.9)

t=\frac{\log(\frac{1}{2})}{\log (0.9)}

t=6.57

t\approx 6.6

Therefore, the car is about 6.6 years old.

3 0
3 years ago
Read 2 more answers
2-1<br> 3+2-<br> 9<br> 1<br> * 3|<br> 44<br> (+1)(0)<br> (98 9(<br> 2)
Katena32 [7]

Answer:64

Step-by-step explanation:

8 0
3 years ago
A number cube was rolled as part of an experiment. The results are displayed in the table below. Number 1 2 3 4 5 6 Frequency 4
asambeis [7]

Answer:

9/60

Step-by-step explanation:

Sample Response/Explanation: To find the experimental probability, compare the total number of times the event occurs to the total number of trials. Compare the frequency of rolling the number six (9) to the total number of trials (60) using a ratio, and then reduce.

6 0
2 years ago
URGENT PLEASE HELP Select the correct solution set. x + 17 ≤ -3 {x | x ≤ -20} {x | x ≤ 14} {x | x ≥ -20}
grigory [225]

Answer:

The correct answer is the first solution set.

Step-by-step explanation:

If we substitute -20 into the equation we get

-20+17≤-3

-3≤-3

So,the inequality is right.

We can check the second one

14+17≤-3

31≤3 The inequality is false.

We can check the last one

-20+17≤-3

-3≤3 It works however there is a difference between the first one and the last one and that is the sign.For the first one there x≤-20 meaning the greatest number x can be is -20.For the last one x≥-20 which means -20 is the least value x can be.

If we substitude -21 into the equation we get

-21+17≤-3

-4≤-3

The inequality is false because -4 is not smaller than -3.

So,the right answer is the first solution set.

7 0
3 years ago
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