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Aloiza [94]
3 years ago
14

You are taking a multiple choice quiz that consists of five questions. Each question has four possible answers, only onw of whic

h is correct. To complete this quiz, you randomly guess the answer to each question. Find the probability of guessing exactly 3 answers correctly.
Mathematics
2 answers:
Dahasolnce [82]3 years ago
6 0

Answer:

60% is the answer. Not pretty sure

Eduardwww [97]3 years ago
4 0

Answer:

3/20

Step-by-step explanation:

You're taking a 5 question quiz w/ 4 options but 1 correct answer. then guessing 3 correctly would be  3 out of 20.

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Mark leyó 203 páginas. Laney leyó 100 páginas más que Mark. Gavin leyó 10 páginas menos que Laney. ¿Cuántas páginas leyó Gavin?
nekit [7.7K]

Answer: 293 páginas

Step-by-step explanation:

Laney = 203 + 100

Laney = 303

Gavin = 303 - 10

Gavin leyó 293 páginas

8 0
2 years ago
Timmy and Ben shared a bag of marbles. Timmy had 3/4 of what Ben had. When Ben gave 36 marbles to Timmy, Ben had 1/3 of what Tim
Svetllana [295]

Let t be the inital number of Timmy's marbles, and b be the inital number of Ben's marbles.

At the beginning, "Timmy had 3/4 of what Ben had", which means

t = \cfrac{3}{4}b  \iff 4t=3b

(I wrote the equation in an equivalent form to avoid denominators)

Then, Ben gives 36 marbles to Timmy. So, now Ben has b-36 marbles, and Timmy has t+36 marbles. The new ratio is 1 to 3 in Timmy's favour, so we have

b-36 = \cfrac{t+36}{3} \iff 3(b-36) = t+36 \iff 3b-108 = t+36

(same as before)

So, we have the following linear system:

\begin{cases}4t=3b\\3b-108=t+36\end{cases}

From the first equation we know that 3b=4t, so the second equation becomes

4t-108=t+36 \iff 3t = 144 \iff t = \cfrac{144}{3} = 48

Now that we know the value for t, we can simply plug it into the first equation to get

3b = 4\times 48 = 192 \iff b=\cfrac{192}{3} = 64

3 0
2 years ago
Median math question
Feliz [49]

Answer:

27

Step-by-step explanation:

25,16,21,30

Put the numbers in order from smallest to largest

16,21,25,30

The median is the middle and the median is 25  so the new number must be 25 or larger

The only number on the the list that is 25 or largest is 27

8 0
3 years ago
Which of the following best describes the volume of a cylinder?
lord [1]
Option B : The area of the circular base multiplied by the height of the cylinder
3 0
3 years ago
What's one-sixth of 1/2
lys-0071 [83]
Answer:

1/12

Hope this helps!
8 0
3 years ago
Read 2 more answers
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