Answer:
126
Step-by-step explanation:
This is a tricky question!
So we can quickly find the area of the whole circle through πr². That would be around 144π (remember, we are solving in terms of π, so we dont use 3.14)
Then, the circles. Through πr², we can find that the area of one circle is 9π. And since there are two circles, we can add these together to become 18π.
Now we subtract 144π from 18π to find the shaded area. 126π, and since we are doing this in the terms of π, we don't need to include that.
Answer:
0,0 represents the y intercept
1,10 represents the slope
Answer:
a) Simple random sample
b) Random sample
c) None of them.
Step-by-step explanation:
a) This would be a simple random sample given that the dice roll is a random method to select the students and the probability of each outcome of the dice is 1/6.
b) This would be a random sample, given that the cards are shuffled, this is a random event. However, there's a condition on how to select the cards (The top ones are chosen) and therefore this can not be a simple random sample since not all cards have the same probability of being selected.
c) This is not a random sample since there is an specific condition on how to choose the students (by their age)
Answer:
ln(x)/ln(11)
Step-by-step explanation:
That perpendicular line will have slope , negative reciprocal to the slope of this line:
x +9y - 2 = 0 and its slop is - 1/9 { 9y = - x - 2 → y = (-1/9 )x - 2/9 }
So the slope of the perpendicular line will be ? 9
There fore the equation of the perpendicular line : y = 9x + b
“b” to be found by using other conditions
x intercept for this line ( put y = 0 ): -b/9
x intercept for 2x - 9y + 27 = 0 ( put y = 0) : - 27/2
Just equate the two: -b/9 = -27/2 → b = 243/2
y = 9x + 243/2