If you represent the problem in a diagram, you will form a triangle with 3 known length of the sides. When you are given all sides, and you are asked to find an angle, you can use the cosine law.
b^2 = a^2 + c^2 - 2ac*cosB
1.4^2 = 1.9^2 + 1^2 - 2(1.9*1)(cosB)
B = 45.78°
Answer: 28
Step-by-step explanation: you have to add 21 + 7 because your counting up from -7 to 21
P ( A ) = 0.45 - probability that the land has oil,
P ( B ) = 0.8 - probability that the test predicts it
P ( A ∩ B ) = P ( A ) · P ( B ) = 0.45 · 0.8 = 0.36
Answer: The probability that the land has oil and the test predicts it is 36 %.
Answer:
Exact Form:
x = 31/25
Decimal Form:
x = 1.24
Mixed Number Form:
x = 1 6/25
Step-by-step explanation:
Hope this helps
False. Perpendicular lines run beside each other not through each other.
