Answer:
10
x
3
+
x
2
-7
x
Step-by-step explanation:
1). No answer is possible until we know how many people
there are in "this class".
2). If there are 5 choices, and only one of them is correct,
and you close your eyes and choose one of them completely
at random, then the probability of choosing the correct one is ...
1 / 5 = 20% .
Answer:
x = 8.9 (nearest tenth)
Step-by-step explanation:
6^2 - 4^2 = 36 - 16 = 20
So
x = 2 * (√20)
x = 2 * 4.47
x = 8.94
Answer:
15 hours.
Step-by-step explanation:
20 can be divided into quarters, 3 quarters is 15/20 hours.
Answer:
126 degrees
Step-by-step explanation:
Triangle: y = 180 - (5x + 4x)
Straight angle: y = 180 - (4x + 30)
180 - (5x + 4x) = 180 - (4x + 30)
5x + 4x = 4x + 30
5x = 30
x = 6
Angle:
y = 180 - (5x + 4x)
y = 180 - 9x
y = 180 - 9(6)
y = 126
