Answer:
The second choice, 
.
Step-by-step explanation:
Note, that the expression 
is an equation. A point 
is on the graph of 
if and only if the value of 
and 
satisfy this equation; that is: in other words, the 
-coordinate of that point (the second number in the tuple) should be equal to 
, which is equal to 
(evaluated where 
is equal to the first number in the tuple.
For each tuple in the choices, calculate the value of where is equal to the first number of each tuple. Compare the result to the second number in that tuple. That choice corresponds to a valid point on only if these two numbers match.
- First choice:
, 
. That's not the same as the second number, 
. Therefore, this point isn't on the graph of . - Second choice:
, 
. That matches the second number in the tuple. Therefore, this point is on the graph of . - Third choice:
, 
. That's not the same as the second number, 
. Therefore, this point isn't on the graph of . - Fourth choice:
, 
. That's not the same as the second number, 
. Therefore, this point isn't on the graph of .
Answer:
15°
Step-by-step explanation:
A regular polygon is a polygon in which all the sides and angles of the polygon are equal to each other.
A regular 12-sided polygon is a polygon with 12 equal sides and angles.
The sum of interior angles of a polygon is given as:
sum = (2n - 4)90; where n is the number of sides of the polygon
For a 12 sided polygon:
Sum of interior angles = (2 * 12 - 4)90 = (24 - 4)90 = 20 * 90 = 1800°
Therefore since all the angles are equal, each angle = 1800° / 12 = 150°
Therefore in the question, ∠PQR = 150° (angle of a 12 sided polygon), ∠PRQ = ∠QPR = x
Therefore in triangle PQR:
∠PQR + ∠PRQ + ∠QPR = 180°
150 + x + x = 180
150 + 2x = 180
2x = 30
x = 15°
∠PRQ = 15°
Hey there!
Markup is the percentage that the cost of an item is increased.
For example, if a company bought a pair of headphones that costed $100 and they sold it for $150, the markup was 50%, since half of the original cost was added. if the markup were 100% it would have been sold for $200, since it added 100% of the original.
I hope this helps!
Since it is stated that the machine he bought only predict about 80%. Thus, about 20% are still possible that there are oils in the land that he owned.
In a 100% value = 80% were the 0 possibillites detected by the machine and 20% are still the possibility that it has an oil.
=> 80% = 0.80
=> 20% = 0.20
In the given choices. letter B has the closest value to the 20% that we expected.
Thus, let's have B as an answer.
