Answer:
248 acres
Step-by-step explanation:
A forest covers 31,000 acres
0.8% of the forest old growth trees
There are 0.8% × 31000 = 248 acres of old growth trees
Step-by-step explanation:
The slope of the equation tangent to y = f(x) at x = 4 is equal to f'(4). Therefore,

We also know that the line passes through the tangent point at (4, -1) so we can write the slope-intercept form of the equation as
or

so our equation is

or in standard form,

Answer:
15
Step-by-step explanation:
a²+20²=25²
a²=625-400
a²=225
a=15
Answer:
The first and third quartiles were calculated incorrectly. Also, this means the inter quartile range is incorrect.
Step-by-step explanation:
The first quartile is going to be the median of the lower half of the data set {89, 93, 99, 110} this median is (93+99)/2, or 96.
The third quartile can be calculated the same way with the data set {135, 144, 152, 159} This gives us 148 as the third quartile.
Lastly, the interquartile range is just the difference between the first and third quartiles, which is 52.