Answer: The width of the rectangular space = 3/2 miles
Answer:6
Step-by-step explanation:
Answer:
Mean: 16.67, Median: 16, Mode: 16
Step-by-step explanation:
Mean: add up all numbers and divide by how many there are.
But when you see the age 14, its frequency is 5; it's as if you wrote 14 down 5 times. Frequency tables help describe long lists of data. So "adding up all numbers" would mean you could expand the list and add them all. HORRIBLE!
14+14+14+14+14+15+15+15+15+15+15+15+15+15+15+ ... There is a better way:
Multiply each age by its frequency and add the products.
14(5)+15(9)+16(18)+17(11)+18(9)+19(5)+20(4) = 1017. How many data values are there? Add the frequencies
5+9+18+11+9+5+4 = 61
The mean is 1017 / 61 = 16.67 (rounded).
Median: We need the number in the middle of the data list, but the numbers have been grouped by frequency. There are 61 data values. The one in the middle must be the 31st number (30 numbers less than the median, 30 numbers greater than the median).
Add up frequencies starting with the first one until you can tell where & what the 31st age is.
5
5+9 = 14
5 + 9 + 18 = 32 Aha! The 31st age must be one of the 16s.
The median is 16.
Mode: is there an age that occurs more often than any of the others? Yes, it is 16, which occurs 18 times. No other age occurs that often.
Answer:
140
Step-by-step explanation:
We first find out how much degrees altogether in the pentagon so we do
S = (n-2) x 180
s is the sum in the shape
n is the number of sides
S = (5-2) x 180
S = 3 x 180
S =540
Now that we have the sum we can add all the sides, first lets make the side ABC = x and side BCD = 2x:
115 + 125 + 90 + x + 2x = 540
330 + 3x = 540
3x = 540 - 330
3x = 210
x = 70
Now that we know x = 70 we can find side BCD, it says its is 2 x angle ABC
so we do 2x70 = 140
so Angle BCD = 140
I hope i did this correctly.