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2 years ago

Help please I have 10 minutes !!

Mathematics

2 answers:

Ymorist [56]2 years ago

8 0

Answer:

Step-by-step explanation:

EastWind [94]2 years ago

7 0

the answer is 18 so now you can go

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Consider two boxes, one containing one black and one white marble, the other, two black and one white marble. A box is selected

valina [46]

Answer:

$\frac{7}{12}$

Step-by-step explanation:

Probability refers to chance of happening of some event.

Conditional probability is the probability of an event A, given that another event B has already occurred.

$B_1,B_2$ denote the two boxes.

In box $B_1$ :

No. of black balls = 1

No. of white balls = 1

In box $B_2$ :

No. of black balls = 2

No. of white balls = 1

Let B, W denote black and white marble.

So, probability that either of the boxes $B_1,B_2$ is chosen is $\frac{1}{2}$

Probability that a black ball is chosen from box $B_1$ = $\frac{1}{2}$

Probability that a black ball is chosen from box $B_2=\frac{2}{3}$

To find:probability that the marble is black

Solution:

Probability that the marble is black = $\frac{1}{2}(\frac{1}{2} )+\frac{1}{2}(\frac{2}{3})=\frac{1}{4}+\frac{1}{3}=\frac{7}{12}$

6 0

3 years ago

Find a rational number between 3 and 4

klio [65]

Answer:

3.1, 3.2, 3.3

Step-by-step explanation:

There are infinite options but a rational number is a fraction, decimal, or repeating decimal.

3 $\frac{1}{3}$ is an example of a fraction between 3 and 4

3.2 is an example of a decimal between 3 and 4

3.3333333... is an example of a repeating decimal between 3 and 4

6 0

3 years ago

Read 2 more answers

1st term in sequence is 6-4th term is -6, the 8th term is -22 write a function that can be used to find the nth term of the sequ

laila [671]

EXPLANATION

The nth term of the sequence is given by

$U_n=a+(n-1)d$

Where

$a$

is the first term and

$d$

is the constant difference.

We were given that,

$a=6$

S we just need the common difference to write the nth term.

We can get that from another information given to us.

We were also given that the 4th term is 6. This gives the equation.

$a+3d=-6$

We substitute

$a=6$

to obtain

$6+3d=-6$

$2+d=-2$

This implies,

$d=-2-2$

$d=-4$

We substitute these values into the general formula to obtain,

$U_n=6+(n-1)\times-4$

This gives us,

$U_n=6+-4n+4$

$U_n=10-4n$

Hence the nth term of the sequence is,

$10-4n$

4 0

3 years ago

Read 2 more answers

Summit provides patrol 6 (grade 6) with $85 to spend on the snacks. Will the amount of money be enough to cover the total cost o

sammy [17]

Answer: yes

Step-by-step explanation: smart werewolf.

3 0

3 years ago

Pretty simple question, but how the hell am I supposed to know whether to put an addition sign or a subtraction sign.

earnstyle [38]

Answer:

you must remember + and + equal to minus

6 0

3 years ago