Answer:
try 36?
Step-by-step explanation:
Mean (the average):
is the mean
Median (the middle number when the numbers are ordered):
87
Mode (most repeated number(s)):
74 and 87
Range (difference between the highest and the lowest values):
115-67=48
Answer:
Option (3)
Step-by-step explanation:
w =
Since, cos(225) = cos(180 + 45)
= -cos(45) [Since, cos(180 + θ) = -cosθ]
= -
sin(225) = sin(180 + 45)
= -sin(45)
= -
Therefore, w =
=
=
z = 1[cos(60) + i(sin(60)]
=
=
Now (w + z) =
=
=
=
Therefore, Option (3) will be the correct option.
The two horizontal lines are parallel, so the smaller triangle is similar to the entire triangle.
That means the sides are proportional to each other. So pick two sides of the triangle and find the ratio between them. The ratio must be the same for both triangles.
(15/5) = (15+x)/8
Solve for x.
15*8 = 5(15+x)
120 = 75 + 5x
5x = 45
x = 9