Answer:
The least value of n is 17.
Step-by-step explanation:
First term (a) = 46
Second term (a + d) = 43
Third term (a + 2d) = 40
Common difference (d) = second term - first term = 43 - 46 = -3
Tn (nth term) = a + (n - 1)d
a = 46, d = -3
Tn = 46 + (n - 1)-3 = 46 + (-3n + 3) = 46 - 3n + 3 = 49 - 3n
For Tn to be negative, the product of 3 and n must be greater than 49.
Therefore, the least value of n is 17
Answer:
is the distance between the point A and point B.
Step-by-step explanation:
Let
A ≡ (x₁, y₁) ≡ (-9 , -8 )
B ≡ (x₂, y₂) ≡ (-6 , -4 )
Now by Pythagoras Distance formula we have
a² + b² = c²
The "mean" is just the normal arithmetic average that you are most likely already familiar with.
mean=(sum of elements)/(number of elements)
In this case:
mean=(2+28+2+20+22)/5
mean=74/5
mean=14.8
So the mean or average age of the trees is 14.8 years.
Answer:
120 ft squared
Step-by-step explanation:
First you find the areas of all the triangle surfaces and add them up
1/2 * b * h = 21
21 *4 = 84
Find the area of the square base and add the 2 values up
6^2 = 36
36+84 = 120
