Answer:
n = 18 cycles
Step-by-step explanation:
To know how many times does the current oscillates in the given time, you take into account that the number of oscillation can be calculated by using the following expression:
(1)
f: frequency of the oscillation of the current
t: time = 0.30s
The frequency is the number of cycles per second, that is, f = 60 cycles/s
You replace the values of f and t in the equation (1):

In 0.30s the current oscillates 18 times
<span>nth term = 7n - 3
n = 1,2,3,4....</span>
The "e" just lets you know that it's scientific notation.
You should subtract the powers when they are divided and add them when they are multiplied this rule is so important for now you just have to subtract them and you will get the answer
Hope it helps :)
Answer:
Part 9)
Part 10)
Step-by-step explanation:
we know that
The <u><em>Midpoint Theorem</em></u> states that: The segment joining two sides of a triangle at the midpoints of those sides is parallel to the third side and is half the length of the third side
Part 9) we know that
Point Q is the midpoint segment XY (QY=QX)
Point R is the midpoint segment XW (RW=RX)
Applying the Midpoint Theorem
RQ is parallel to WY
and
we have
substitute
solve for x

Part 10) we know that
Point B is the midpoint segment TS (BS=BT)
Point C is the midpoint segment RS (CS=CR)
Applying the Midpoint Theorem
BC is parallel to TR
and
we have
substitute
solve for x