The top right is the answer. The base should be square with lengths of 8 and the height is 10.
We know that
in a right triangle
Applying the Pythagoras Theorem
c²=a²+b²
in this problem
c=√87 yd
a=√23 yd
b=?
so
b²=c²-a²-----> b²=(√87)²-(√23)²----> b²=87-23----> b²=64----> b=8 yd
the answer is
8 yd
Probability (rock) :
78 / 150 = 13/25 = 52%
Rock is preferred by 52% of the 150 visitors that were surveyed
To find how many people will likely sell from the rock genre, you need to find 52% of the estimated sales (6,000 copies).
52% • 6000 = 3,120
Answer: C. 3,120
Three times. The remainder would be 2.
If a question has four possible answers, and you are strictly guessing regarding which of them is correct, then the chances of your choosing the correct one from the four is 1 in 4, or 0.25.
