Well, what are the pictures??
Answer:
a) a + c = 90
d) a + b + c + 30 = 180
e) The angles marked a and b are vertical
f) The angles marked a and c are complementary.
Step-by-step explanation:
A complementary angle is and angle that has a sum of 90 degrees. A vertical angle is 2 angles facing each other, that are completely identical. 180 degrees is the sum of a strait line. 90 degrees is a right angle.
Hope this helps! Have a wonderful rest of your day!
<em>-kiniwih426</em>
11/12 because 1/2 is equal to 6/12 and 6/12 + 5/12=11/12 you cannot simplify
Answer:
find 2 then from 2 and 3 find about 2/3 of the way from 2-3 and plot it there
Step-by-step explanation:
Answer:
The mean is 561.40 ppm. The standard deviation is 29.15 ppm.
Step-by-step explanation:
We can calculate the mean and the standard deviation using the proportions of the population that are subjected to the different levels.
The mean can be calculated as
The standard deviation of the mean can be calculated in a similar way
The mean is 561.40 ppm. The standard deviation is 29.15 ppm.