Ask question

Ask question

All categories

3 years ago

10

A CD player holds 5 CDs, and each disc has 12 songs. If the CDs are changed randomly, find the probability that your favourite s

ong is played first.
(Give your answer as a fraction)

1 answer:

almond37 [142]3 years ago

7 0

Answer:

1/(5*12) = 1/60 = .016 = 1.6%

Step-by-step explanation:

You might be interested in

What is the solution to the proportion? 5/x = 2/8 ( It's in fraction form lol)

ollegr [7]

If the goal of this question is to solve for x than the correct answer is 20. Hope this helped.

7 0

3 years ago

Read 2 more answers

Marco is 8 years younger than his brother Paolo. If their product of their ages is 105, how old is Marco? plz help

Nina [5.8K]

Answer:

Marco's age is 7 years old

Step-by-step explanation:

Let

x ----> Marco's age

y ----> Paolo's age

we know that

$x=y-8$ ----> $y=x+8$ ----> equation A

$xy=105$ ----> equation B

substitute equation A in equation B

$x(x+8)=105$

$x^2+8x-105=0$

Solve the quadratic equation

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^2+8x-105=0$

so

$a=1\\b=8\\c=-105$

substitute in the formula

$x=\frac{-8(+/-)\sqrt{8^{2}-4(1)(-105)}} {2(1)}$

$x=\frac{-8(+/-)\sqrt{484}} {2}$

$x=\frac{-8(+/-)22} {2}$

$x=\frac{-8(+)22} {2}=7$

$x=\frac{-8(-)22} {2}=-15$

Remember that the solution cannot be a negative number

so

The solution is x=7

therefore

Marco's age is 7 years old

4 0

3 years ago

What's the answer do this question??

Gemiola [76]

It is A) skewed left because the long tail in the box plot is on the left hand side. The mean is also on the left hand side of the peak so it is skewed left.

Hope this helps :)

4 0

3 years ago

What is the volume of the prism below?<br> 5<br> 10<br> 3

Dmitriy789 [7]

Answer:

150

im pretty sure thats right

6 0

2 years ago

What is the distance between (5,-1) and (5,4)?

Alex_Xolod [135]

Answer:

D

Step-by-step explanation:

The first number in each co-ordinate is the same so -1 plus 4 is 5 units

5 0

3 years ago