Answer:
<em>The actual distance between Rose Lake and the hiking trail is 7 miles.</em>
Step-by-step explanation:
The actual distance between Rose Lake and the main road is 3.5 miles and the scaled distance on the map is 2 inch.
Suppose, the actual distance between Rose Lake and the hiking trail is miles.
Given that, the scaled distance from Rose Lake to the hiking trail on the map is 4 inch.
So, <u>according to the ratio of "scaled distance" to the "actual distance"</u>, the equation will be......
Thus, the actual distance between Rose Lake and the hiking trail is 7 miles.
Answer:
c
Step-by-step explanation:
ccccccccccccccccccccccccc
4x² + 2x - 30 = 0
<span>
factor out the GCF:
</span>2(2x² + x - 15) = 0
<span>
factor the trinomial completely:
2x</span>² + x - 15 = 0
2x² + 6x - 5x - 15 = 0
2x(x + 3) - 5(x + 3) = 0
(2x - 5)(x + 3) = 0
<span>use the zero product property and set each factor equal to zero and solve:
2x - 5 = 0 or x + 3 = 0
2x = 5 x = -3
x = 2.5
</span><span>The roots of the function are x=-3, x=2.5</span>
Answer:
Step-by-step explanation:
Given
Solving (a); Point estimate of mean
To do this, we simply calculate the sample mean
Solving (b); Point estimate of standard deviation
To do this, we simply calculate the sample standard deviation
<em>Note that: The sample mean and the sample standard deviation are the best point estimators for the mean and the standard deviation, respectively.</em>
<em>Hence, the need to solve for sample mean and sample standard deviation</em>