Answer:
To find the variance just take the second moment and subtract that from the first moment squared
To find the standard deviation just take the square root of the variance
Step-by-step explanation:
Step-by-step explanation:
the length is calculated via Pythagoras, as the coordinate differences and the direct connection (as the Hypotenuse) between both points create a right-angled triangle.
length² = (-4 - 2)² + (1 - -3)² = (-6)² + 4² = 36 + 16 = 52
length = sqrt(52) = sqrt(4×13) = 2×sqrt(13)
the midpoint is simply ((x1+x2)/2, (y1+y2)/2)
so,
(-4 + 2)/2 = -2/2 = -1
(1 + -3)/2 = -2/2 = -1
therefore, the midpoint is (-1, -1)
X, y - the numbers
The sum of the two numbers is 9.
If one number is subtracted from the other, the result is 3.
Solve the system of equations:
The numbers are 6 and 3.
Answer:
b = 9.2 (Rounded to the nearest tenth)
Step-by-step explanation:
ABC is a <u>right-angled</u> triangle at B.
Then ,according to the <u>Pythagorean theorem</u>:
Answer:
144 streetlights
Step-by-step explanation:
1.5 is equivalent to 1/2
it takes 8- 1/2's to equal 4 whole miles
18x8= 144