Answer:
k = 77/10
Step-by-step explanation:
The jar consist of blue, red and green marbles . The probability of each of them can be described as follows.
probability of blue marbles = 2/7
probability of red marbles = 3/k
probability of green marbles = 5/2k
The sum of the individual probability is equals to 1. Therefore,
2/7 + 3/k + 5/2k = 1
collect like terms
(6 + 5)/2k = 1 - 2/7
11/2k =(7 - 2) /7
11/2k = 5/7
cross multiply
10k = 77
divide both sides by 10
k = 77/10
so I have a good idea of the
Answer:
∠8 is 105° and ∠7 is 75°
Step-by-step explanation:
Angles 4 and 8 are corresponding angles, and are congruent.
Angles 8 and 7 are a linear pair
Step-by-step explanation:
explain to me what you are asking
Answer:
(a) (x+3) (x+9)
(b) (x+4) (x-4)
(c) (x-4i) (x+4i)
(d) (-2+i) (-2-i)
Step-by-step explanation:
We have given the quadratic expressions and we have to write these expressions in factor form
(a)
It can be written as
Now taking (x+9) as common
(b)
We know the algebraic equation
(c)
(d)
It can be written as