Answer:
Correct option: A -> 10/91
Step-by-step explanation:
If the password has only one number, it has three characters.
So first we can do a combination of 4 choose 3, as the characters and numbers can be at any position, then we multiply by the probability of each space having a character or number:
Combination of 4 choose 3: 4!/3! = 4
First character: 6 possibilities over a total of 16: 6/16 = 3/8
Second character: 5 possibilities over a total of 15: 5/15 = 1/3
Third character: 4 possibilities over a total of 14: 4/14 = 2/7
First number: 10 possibilities over a total of 13: 10/13
Probability: 4 * (3/8) * (1/3) * (2/7) * (10/13) = (2*5)/(7*13) = 10/91
Correct option: A
If it takes 2 1/2 hours going 48 mph we can figure out how many miles it was with
2 1/2*48=120
they went 120 miles to the lake
now they are going back the 120 at 40 mph
120/40=3
it took 3 hours for the return trip
Answer:
(- 1, - 1 )
Step-by-step explanation:
Given the 2 equations
y = 4x + 3 → (1)
x + y = - 2 → (2)
Substitute y = 4x + 3 into (2)
x + 4x + 3 = - 2, that is
5x + 3 = - 2 ( subtract 3 from both sides )
5x = - 5 ( divide both sides by 5 )
x = - 1
Substitute x = - 1 into (1)
y = 4(- 1) + 3 = - 4 + 3 = - 1
Thus x- value is - 1 and y- value is - 1
Answer:
Step-by-step explanation:
She had the most pleasant face and huge, enormous sky-blue eyes. Around this pleasant round face, her hair, as yellow as a crow's foot, curled in short ringlets. Similie, personification, or metaphor?
No because if it is a square all the sides are 7m long so a 9m plank will not fit. Hope this helps.
