Answer:21 cm
Step-by-step explanation: The circle's circumference is 84 cm. 84 / 4 = 21. Therefore the length of the arc XY is 21 cm.
Answer:
14x - 9x = 5x
Step-by-step explanation:
8x + 6 = 14x
6x + 3 = 9x
Answer:
D
Step-by-step explanation:
the median is the middle value of a data set in ascending order
If there is not an exact middle then it is the average of the values on either side of the middle
Arrange data in ascending order
15, 17, 19, 21, 23, 25, 26, 28, 28, 30
the middle is between 23 and 25 , hence
median =
=
= 24
The answer is the last one!!
Answer:
The missing side, a = 100.50
Step-by-step explanation:
The given information are;
A = 18
B = 28
C = 100
a = Required,
The number of data points in the definition = 3, therefore, the figure is a three sided figure or a triangle
The sum of the given data is 18 + 28 + 100 = 146 which is less than the sum of the interior angles of a polygon, the minimum of which is 180° for a triangle.
However, the length of the two sides A and B are less than the third side C, therefore, the sides need more length for them to form a triangle
The fourth required information can be taken as the fourth side of a trapezium, to give;
Length of a = √((28 - 18)² + 100²) = 100.499, which can be written to the nearest 10th as 100.50.