Answer:
x = -1/2 and x = -3
Step-by-step explanation:
2x² + 7x + 3 = 0
Using AC method:
2 × 3 = 6
Factors of 6 that add up to 7: 1 and 6
Divide by 2 and reduce: 1/2, 6/2 = 3/1
The factors are (2x + 1) and (x + 3)
(2x + 1) (x + 3) = 0
2x + 1 = 0
x = -1/2
x + 3 = 0
x = -3
The solutions are x = -1/2 and x = -3.
Answer:
c
Step-by-step explanation:
Answer: 0.0575
Step-by-step explanation:
Binomial probability distribution :-
, where P(X) is the probability of getting success in x trials, n is the total number of trials and p is the probability of success in each trial ( in decimal ).
Given : The probability that adults use smartphones in meetings or classes = 0.57
Sample size : n= 8
Now, the probability that exactly 2 of them use their smartphones in meetings or classes :-
Hence, the required probability = 0.0575
Answer:
Option 3.
Step-by-step explanation:
Angle E and angle A are corresponding angles, therefore they are congruent angles. Corresponding angles have the same angle.
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