<em>Answer:
</em>
<em>Elena's running speed is 5 miles/hour
</em>
<em>Explanation:
</em>
<em>The speed is defined as the covered distance per unit time
</em>
<em>In the problem, we have:
</em>
<em>The distance covered is the length (circumference) of the circular track which is given as of a mile.
</em>
<em>We are also given that she completes each lap (she completes of a mile) in of an hour
</em>
<em>
</em>
<em>To get her speed, we will divide the distance covered by the time taken to cover this distance
</em>
<em>This is done as follows:
</em>
<em>speed = miles/hour
</em>
<em>This means that:
</em>
<em>Elena can run 5 miles each hour</em>
By shesney <3
For every integer k from 1 to 10, inclusive the kth term of a certain sequence is given by [(−1)^(k+1)]∗[1/2^(k)].
If T is the sum of the first 10 terms in the sequence, then T is:
B.
A. Greater than 2
B. Between 1 and 2
C. Between 1/2 and 1
D. Between 1/4 and 1/2
E. Less than 1/4
Answer: x=8.56365
Step-by-step explanation:
You have the angle and hypotenuse and have to find the opposite so you use sin.
Sin#=o/h
Sin35=o/20
Then I just put that into my calculator and got x= 8.56365. (I added the decimals cause idk what you need to round to)
The answer is 4 because 8 divided by 2 congruent rectangles equals 4.
buy = 30 share at 20 1/4 each
sell = 30 share at 25 1/4
profit $5 share profit
total profit is 150$