1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mestny [16]
3 years ago
13

Sally is completely unprepared for a three-question multiple-choice pop quiz, so she randomly guesses the answer to each questio

n. If each question has four choices, then what is the probability that she gets at least two questions correct?
Mathematics
1 answer:
timurjin [86]3 years ago
8 0
There are 3 questions and 4 choices.
So she has 1/4 of a chance of getting each question right.
Now if you multiply all her odds 1/4 x 1/4 it would become 1/16. Therefore she has 1/16 of a chance of getting a 2/3
You might be interested in
Tania took selfies with her 8 cousins. Each cousins is in 2 or 3 picture. There are exactly 5 cousins on each picture. How many
andreev551 [17]

Answer:

4

Step-by-step explanation:

How many selfies did Tania take? (my first answer would be too many, but that's probably not the answer you're looking for :-) )

We know that each cousin appear 2 or 3 times overall.

If she would have taken each cousin exactly 2 times, that would be 16 cousins/photos

If she would have taken each cousin exactly 3 times, that would be 24 cousins/photos

We know there's exactly 5 cousins per photo...

so we have to find a multiple of 5 cousins/photos that is between 16 and 24.

The only possibility is 20 cousins/photos.  20 / 5 = 4 photos.

8 0
3 years ago
On the first day of a road trip, Roberto traveled 213 miles from home. On the second day, he drove 149 miles farther. How many m
jek_recluse [69]

The answer would be 362 miles

add the number of miles from day one and day two

4 0
2 years ago
What is ​ BC ​ ? <br><br> Enter your answer in the box.<br><br> units
Vladimir79 [104]

Answer:

BC = 25

Step-by-step explanation:

AB = AC since it is an isosceles triangle

4x+1 = 2x+23

subtract 2x from each side

4x-2x+1 = 2x-2x+23

2x +1 = 23

subtract 1 from each side

2x+1 -1 = 23-1

2x = 22

divide by 2

2x/2 =22/2

x =11

BC = 3x-8

BC = 3(11) -8

BC =33-8

BC = 25


6 0
3 years ago
Which equation has infinitely many solutions?
ipn [44]

Answer:

Equation C. 5.1 + 2y + 1.2 = -2 + 2y + 8.3

Step-by-step explanation:

Equation C is the only equation in the list in which the terms that contain the unknown "y" on each side of the equal sign are identical, therefore when solving for this unknown and trying to group them on one side, they go away, leaving us with a relationship among numerical values that is always true:

5.1 + 2y + 1.2 = -2 + 2y + 8.3

5.1 + 1.2 = -2 + 8.3

6.3 = 6.3

Then this equation is true for any value of the unknown y, and y- can adopt infinite number of values, independent of which the equation will always be a true statement (giving thus infinite number of solutions).

4 0
2 years ago
chris has a collection of 20 baseball cards and kyle has collection of 40 baseball cards.Chris is adding 3 baseball cards per mo
sergij07 [2.7K]
In 10 days they will have the same amount of cards
7 0
3 years ago
Other questions:
  • What is 10 and one half minus 8 and one half
    11·1 answer
  • Based on your choices from the previous question, explain why the others cannot be used for surface area.
    8·1 answer
  • Writing Is 8.55555555... a rational or irrational number? Use pencil and paper. Describe how you would
    8·2 answers
  • What does 0 = 0 mean regarding the solution to the system?
    5·1 answer
  • Jeremiah made .25 per ounce of lemonade sold.If he sold all of his lemonade, how much money did he make?
    7·2 answers
  • Can somebody help me, please?
    8·1 answer
  • Plsss help no one answered the other times I put this question
    14·1 answer
  • If the leg of a triangle is 4 and the hypotenuse is 10 what is the number of the other leg
    9·1 answer
  • Please solve and show your work
    6·1 answer
  • How do you graph y=3x-2
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!