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3 years ago

8

A box contains 150 black pens and 50 red pens. Jose said the sum of the probability that a randomly selected pen will not be bla

ck and the probability that the pen will not be red is 1. Explain whether you agree.

1 answer:

pishuonlain [190]3 years ago

3 0

Maybe it is black because 150is more than 50 so about 75/100

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Suppose a group of research proposals was evaluated by a panel of experts to decide whether or not they were worthy of funding.

Ksivusya [100]

Answer:

(a) 0.12 (b) 0.32 (c) 0.56

Step-by-step explanation:

The sample outcomes are Funded or Unfunded. Total sample space is given by:

2²= 4

Fund = F

Unfunded = U

P (F) ist panel = 0.2

P (U) ist panel = 0.8

P (F) 2nd panel = 0.6

P (U) 2nd panel = 0.4

TOTAL SAMPLE SPACE

Ist Panel Second Panel

F F

F U

U F

U U

(a) Probability of both panel approval = P (FF)

= 0.2 x 0.6

= 0.12

(b) Probability of approval disapproved by both panels = P (UU)

= 0.8 x 0.4

= 0.32

(c) Probability of a worthy disapproval by one panel = P(FU) + P(UF)

= (0.2 x 0.4) +(0.8 x 0.6)

= 0.08 + 0.48

= 0.56

6 0

4 years ago

Benjamin took a taxi from his house to the airport. The taxi company charged a pickup fee of $2.60 plus $3 per mile. The total f

KonstantinChe [14]

Answer:

74.60=3x+2.60

74.60-2.60=72

72/3=24

x=24

the taxi ride was 24 miles

8 0

3 years ago

A three-digit number has tens digit two greater than the units digit and the hundreds digit one greater than the tens digit. The

Paha777 [63]

Answer:

875

Step-by-step explanation:

As given, there is a three digit number

So, let assume three digit number be `xyz`.

Now, as given tens digit is 2 greater than the unit digit.

∴ $y= 2+z$

Next, the hundred digit one greater than the tens digit.

∴ $x= 1+y$

The sum of the tens and the hundreds digits is three times the units digit.

∴ $x+y= 3z$

Now, substituting the value in the equation.

$x+y= 3z$

⇒ $(1+y)+y= 3\times (y-2)$

solving it to get value of y

⇒ $2y+1= 3y-6$

⇒ $-y= -7$

∴ $y=7$

Next, finding value of z

y= $2+z$

substituting the value of y and subtracting both side by 2

∴ z= $7-2= 5$

Last, finding the value of x

$x=1+y$

substituting the value of y

∴ x= 8

xyz= 875

5 0

3 years ago

I need to know if this is correct

vitfil [10]

i thinks its correct.

3 0

3 years ago

The least common denominator of 5/6, 2/3, and 3/5 is:

Artemon [7]

Answer:

30

Step-by-step explanation:

List the factors

6 = 2*3

3 =3

5 = 5

The least common multiple is 2*3*5 = 30

The least common denominator is 30

4 0

3 years ago

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