SOLUTION: Can you explain these problem?
1.) When text messaging on a telephone, pressing a 3 types D, E, F, or 3. Pressing a 7 types P, Q, R, S, or 7. How many messages are possible by p
Algebra.Com
Question 180539This question is from textbook Chapter 11 Skill practice
: Can you explain these problem?
1.) When text messaging on a telephone, pressing a 3 types D, E, F, or 3. Pressing a 7 types P, Q, R, S, or 7. How many messages are possible by pressing a 3, a 7, and then a 3?
11.) What is the probability that a random 2-digit number is a multiple of 7?
13.) A mother is making different lunches for each of her 3 children. If each child grabs a lunch bag at random, what is the probability that all 3 children will get the correct bag?
21.) Two number cubes are rolled--one blue and one yellow. Find the probability that the yellow cube is even, and the sum is 7. Explain why the events are dependent.
Please answer me as soon as you could. Thank you for your help.
This question is from textbook Chapter 11 Skill practice
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1.) When text messaging on a telephone, pressing a 3 types D, E, F, or 3. Pressing a 7 types P, Q, R, S, or 7. How many messages are possible by pressing a 3, a 7, and then a 3?
Ans: 3*4*3 = 36
--------------------------------------
11.) What is the probability that a random 2-digit number is a multiple of 7?
Ans: There are 99 2-digit numbers if you do not include 00.
Multiples of 7 are: 7,14,21,28,35,42,49,etc, 98
So there are 14 multiples of 7 that are 2-digit numbers
Ans: Probability = 14/99
------------------------------------------
13.) A mother is making different lunches for each of her 3 children. If each child grabs a lunch bag at random, what is the probability that all 3 children will get the correct bag?
Ans: There are 3!=6 possible ways to pick the bags; only 1 is the right way.
Probability = 1/6
-----------------------------------------
21.) Two number cubes are rolled--one blue and one yellow. Find the probability that the yellow cube is even, and the sum is 7.
(yellow is even and sum is 7) = (2,5), (4,3), (6,1)-------3 elements
Total number of outcomes: 6*6 = 36
Probability(yellow even and sum is 7) = 3/36 = 1/12
----------------------------------
Explain why the events are dependent.
I'll leave that to you.
==============================
Cheers,
Stan H.
RELATED QUESTIONS
Hi there, I'd love some help on answering these Logic Proof Questions:
1.
1. T > O
(answered by math_tutor2020)
trianlge abc is similiar to triangle def. Suppose a=3 b=6,c=7, and d=4 Find E and F?... (answered by solver91311)
I am dividing monomials and i have a question on how to do these types of problems.... (answered by solver91311)
Hello-
My name is Jessica and I am a tutor too. I could not get these for my student.... (answered by Earlsdon)
Graph:
f(x) = -2x, x<=-2
f(x) = -3,-21
On these... (answered by stanbon)
1. Let p(x), q(x) denote the following open statements.
p(x): x ≤ 3 q(x): x + 1 is (answered by jim_thompson5910)
You are buying a flower arrangement. The florist has 12 types of flowers, and 6 types of (answered by Mathtut,bhayzone)
What is the age distribution of patients who make office visits to a doctor or nurse? The (answered by richard1234)
D..ex
I have no idea on how to do these types of problems
Problem #7
Solve by... (answered by jim_thompson5910)