Answer:
The required probability is 0.034.
Step-by-step explanation:
Consider the provided information.
An urn contains seven red marbles, four white marbles, and five blue marbles.
Red marbles = 7
White marbles = 4
Blue marble = 5
Total number of marbles = 7+4+5 = 16
Three marbles are drawn in succession.
Probability that the first marble is red, the second is white, and the third is blue is:
Hence, the required probability is 0.034.
First, you want to start by subtracting y from each side to get it isolated. After that, your equation should be
3y= -12
Then, divide each side by 3 to isolate the y. You should end up with y= -4
Answer:
Step-by-step explanation:
f(3)= 8-5(3)
=8-15
=-7
So you just multiply 48 by 2 then by 3 and then by 4 resulting to a=96, b=144, c=192
Answer:
∠AEC = 139°
Step-by-step explanation:
Since EC bisects ∠BED then ∠BEC = ∠CED = 4x + 1
∠AED = ∠AEB + ∠BEC + ∠CED = 180 ← straight angle
Substitute values into the equation
11x - 12 + 4x + 1 + 4x + 1 = 180, that is
19x - 10 = 180 ( add 10 to both sides )
19x = 190 ( divide both sides by 19 )
x = 10
Hence
∠AEC = ∠AEB + ∠BEC = 11x - 12 + 4x + 1 = 15x - 11, hence
∠AEC = (15 × 10) - 11 = 150 - 11 = 139°