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I am Lyosha [343]
3 years ago
10

Convert x2 + y2 = 16 to polar form.

Mathematics
1 answer:
Dafna1 [17]3 years ago
6 0
The Correct Answer is Option B 

r = 4

Ex. CONVERT 2 + 2 = 4 x 4 = 16 
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For the 1,000-meter running event, Abby's mean time is 4.5 minutes with a standard deviation of 0.75 minutes. For the 800-meter
Lilit [14]

Answer:

He performed better in the 800 m race

Step-by-step explanation:

Obtain the standardized score for each event :

Zscore = (score - mean) / standard deviation

1000 meter :

Mean = 4.5 ; Standard deviation = 0.75 ; x = 4.1

Zscore = (4.1 - 4.5) / 0.75

Zscore = - 0.4 / 0.75 = - 0.5333

800 meter :

Mean = 3.2 ; Standard deviation = 0.4 ; x = 3

Zscore = (3 - 3.2) / 0.4

Zscore = - 0.2 / 0.4 = - 0.5

-0.5 > - 0.533

Hence, he performed better in the 800 m race

3 0
3 years ago
Read 2 more answers
Define mean. Then determine the mean of the following data set (22,18,38,6,24,18)
STALIN [3.7K]

Mean is the average number in the data set.

To get the average we first add all the numbers.

After we add all these numbers we then divide by the number of numbers in the data set.

So we do 22+18+38+6+24+18 which is equal to 126 there are six numbers so we divide 126 by 6. This gives us a mean of 21.

ANOTHER EXAMPLE:

Another example of this is the data set (4,65,7,34,5)

We first add all the numbers and get 115 then we divide by 5 and get 23 as the mean.



8 0
3 years ago
A 3 metre long piece of ribbon is cut into
Gnoma [55]

Step-by-step explanation:

3 meters = 300 cm

anyway, the ratio tells us that the whole ribbon can be seen as the combination of 3 + 2 = 5 equally long parts.

one such part is then

3 m / 5 = 0.6 m or 60 cm

the shorter piece is 2 of these parts long :

2 × 0.6 = 1.2 m or 120 cm

5 0
2 years ago
What is the lenght of PR
katen-ka-za [31]

Answer:

B.  6

Step-by-step explanation:

The triangles are similar by AA Similarity.

The lengths of corresponding sides of the triangles are proportional.

AB/PQ = AC/PR

20/5 = 24/PR

4 = 24/PR

4PR = 24

PR = 6

Answer: PR = 6

5 0
3 years ago
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Robert is 14 years old and his dad is 38 years old. How many years ago was his dad exactly 7 times as old as Robert
evablogger [386]
When robert was 4 years old so 10 years ago, i’m not that good at math but i’m pretty sure that’s the answer
7 0
3 years ago
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