Answer: (3, 9)
Step-by-step explanation:
X: Midpoint between 0 and 6
X: Midpoint between 1 and 5
X: Midpoint between 2 and 4
X: Midpoint is 3.
Y: Midpoint between 13 and 5.
Y: Midpoint between 12 and 6.
Y: Midpoint between 11 and 7.
Y: Midpoint between 10 and 8.
Y: Midpoint is 9.
Answer:
{-15, -5}
Step-by-step explanation:
The constant on the left needs to be the square of half the x-coefficient:
(20/2)^2 = 100
To get it to that value, we can add 18 to both sides of the equation:
x^2 +20x +100 = 25 . . . add 18 to both sides of the equation
(x +10)^2 = 25 . . . . . . . . write the left side as a square
x +10 = ±√25 = ±5 . . . . . take the square root
x = -10 ±5 = {-15, -5}
The solutions are x = -15 and x = -5.
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The attached graph shows the solutions to ...
x^2 +20x +82 -7 = 0 . . . . . the result of subtracting 7 from both sides
Answer:
d
Step-by-step explanation:
thats true and i think nw
Answer:
-6 and 7
Step-by-step explanation:
-6 and 7 multiply to be -42.
When you add the two values: -6+7=1
Their sum is 1!
Hope this helps
Answer:
Standard deviation of the population is 2.4
Step-by-step explanation:
Finishing times of 6 participants in 200 meter dash has been given as 27, 28, 27, 25, 24, 31.
We have to calculate the standard deviation of the population formed by these timings.
Formula of standard deviation is
where = standard deviation
= mean of the data
n = number of scores in the sample
Mean of given data =
=
= 30
Now
= 2.236 ≈ 2.24
Therefore, standard deviation of the given data is 2.24