Answer: 11/243
Step-by-step explanation:
Each question has 3 options: 2 incorrect and 1 correct
Probability P(correct guessing) = 1/3
P(wrong guessing) = 2/3
Probability P(4 answers correct) = 5C4 × (1/3)^4 ×(2/3)^1
Probability P(5 answers guessed correctly) =5C5 ×( 1/3)5
Therefore Probability P(4 or more answers correct) = P(4) + P(5) = (10/3^5) +( 1/3^5)
P(4 or more correct answers) = 11/243
Answer:
20 minutes
Step-by-step explanation:
80% of 480 is 384
480 x .80 = 384
4.8 x 20 = 96
Answer:
y= 2x+1
Step-by-step explanation:
Points:
Form of the line:
- y=mx+b, m- the slope, b- y-intercept
Finding the slope:
- m= (y2-y1)/(x2-x1)
- m=(3-1)/(1-0)= 2/1= 2
Line is now:
Using one of the given points to find out the value of b:
So the equation for the line is:
9/9 = 1, so what is 9/9 - 4/9 you ask? 3/9
9/9- 4/9= 3/9. ps the part of the fraction on the left is the top part of the fraction.
Answer:
5
out of
5
(
2
)
+
5
(
−
5
t
)
.
5
(
2
−
5
t
)
Step-by-step explanation: