Answer:
-87
Step-by-step explanation:
sorry im not much help for the step by step but good luck! have a great day!!!
Answer:
4
Step-by-step explanation:
y = 4x + 5
Equating it with
y = mx + b
m = 4
Presumably, whatever is drawn from Urn I is independent of what is drawn from Urn II. This means
We have
so the probability of drawing red balls from both urns is 
Answer:
Step-by-step explanation:
P(A and B) = 0.1
Answer:
38°
Step-by-step explanation:
The measure of required angle can be obtained by using cosine law.
From the given triangle we find that:
a = 5, b = 3, c = 7,
Since,
cos (A) = (b^2 +c^2 - a^2) /2bc
Therefore,
cos (A) = (3^2 + 7^2 - 5^2) /(2*3*7)
cos (A) = (9 + 49 - 25) /(42)
cos (A) = (33) /(42)
cos (A) = 0.785714286
A = arccos(0.785714286)
A = 38.213210675°
A = 38°
