Step-by-step explanation:
Let the number = x
To find, the positive number = ?
According to question,
⇒ - 3x - 28 = 0
By Factorisation method,
⇒ - 7x + 4x - 28 = 0
⇒ x(x - 7) + 4(x - 7) = 0
⇒ (x - 7)(x + 4) = 0
⇒ x - 7 = 0 or, x + 4 = 0
⇒ x = 7 or, x = - 4 [ - 4 is a negative number)
⇒ x = 7
Thus, the required positive number is 7.
Answer:
(a) P(next ball with blue) = (b) P(Not to be red) =
(c) P(drawing 70 times yellow ball) = .
Step-by-step explanation:
Given that,
The total outcomes of the color of tile are :-
Red , Red, Blue, Yellow, Blue, Red, Green, Red, Blue, Green.
From the Question,
Total number of outcomes = 10
(a) What is the probability that her next draw will be blue ?
Red = 4,
Blue = 3,
Green = 2,
Yellow = 1.
P(next ball with blue) = .
(b) What is the probability that her next draw will NOT be red?
P(Red ball) =
But we have to find
P(Not to be red) =
(c) If Amy draws 70 more times with the same tiles from the question above, what probability would you expect a yellow?
P(Yellow ball) =
drawing it 70 times we get the probability
P(drawing 70 times yellow ball) = .