A bag contains 2 red pens, 4 blue pens, 3 black pens, and 1 green pen. A pen is selected, kept out of the bag, and then another pen is selected. Determine P(red and black).

A) 2/5
B) 4/25
C) 2/15
D) 3/15

Answer:

(a)(b)=0.45

a/b=0.8

Step-by-step explanation:

a=0.6

b=0.75

(a)(b)=(0.6)(0.75)=0.45

a/b=0.6/0.75=0.8

Answer:

a*b =  0.5

a/b =  0.888...

Step-by-step explanation:

0.6666... = 2/3

a*b = 2/3 * 3/4 = 1/2 = 0.5

a/b = (2/3) / (3/4) = 8/9 = 0.888...

Answer:

Linear pair

Step-by-step explanation:

<1 and <2 lie on a straight line.

Angles that lie on a straight line are considered as linear pair angles.

Linear pair angles sum up to 180°, which is the measure of a straight line angle.

Answer:

157 meters.

Step-by-step explanation:

Diameter (d) = 50 meters

circumference (C)

= π d

= 3.14 * 50

= 157 meters.

Answer:

157

Step-by-step explanation:

circumference of circle = 2 π r

= 2× 3.14×25 =157

Answer:

43.96 cm

Step-by-step explanation:

Given

diameter (d) = 14 cm

Circumference (C)

= πd

= 3.14 * 14

= 43.96 cm

Answer:

answer in explanation

Step-by-step explanation:

Mean: 13

Median: 9

Mode: 9

Range: 28

The mean,median,mode and range of the data will be 13,9,9 and 28.

Mean is the ratio of the sum of the values of the data set to the total number of values available in the data set.

Thus, we get;

[tex]\rm Mean = \dfrac{\text{Sum of the observations of the data set}}{\text{Total number of observations}}[/tex]

[tex]\rm Mean= \frac{3+25+9+30+9+2}{6} \\\\ Mean=13[/tex]

Arrange the data in the ascending order;

2,3,9,9,25,30

The median of the data set is;

[tex]\rm Median = \frac{9+9}{2} \\\\ Median =9[/tex]

Mode is the value appear most of the time in the data set;

9 is the number repeat two times in the data set.

Mode = 9

Range of the data is the difference of the maximum and the minimum value;

Range=30-2

Range=28

Hence,the mean,median,mode and range of the data will be 13,9,9 and 28.

Learn more about mean refer;

https://brainly.com/question/16118626

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Answer:

42-a²+ab

42-6²+6×5

42-36+30

6+30

36.

Answer:

Step-by-step explanation:

Answer:

3x+6

Step-by-step explanation:

How to solve your question

Your question 3(x -6) + 3(8)

Simplify

Distribute

3(x-6) + 3(8)

3x-18 + 3(8)

Multiply Numbers

3x-18+ 3•8

3x-18-24

Add numbers

3x-18+24

3x+6

Solution

3x+6

Answer:

X=22/9

Step-by-step explanation:

Multiply both sides by 3

Giving u 9x-10=12

Put x on one side

9x=12+10

9x=22

Divide both sides by 9 :)

Answer:

x = 70

Step-by-step explanation:

As the problem states, ∠ABD and ∠DBC are supplementary angles. This means they have a sum of 180°. Since we know this, we can set up an equation to solve for x.

x + 110 = 180

x = 70

Answer:

root(x+6) +3

Step-by-step explanation:

so you see that it is moved 2 left and 5 up

so root (x+6) +3

Answer:

27 1/4

Step-by-step explanation:

Answer:

4.50x=63

Step-by-step explanation:

in sum 14 cars washed

Answer:

llllllllllllllllllll

Answer:

41 1/6 feet tape is left on the roll.

hope this helps pretty sure this is the correct answer

Answer:

If you put it on a graphing calculator, they are perpendicular

Answer:

answer is 283 in^3

Step-by-step explanation:

Answer:

15, A

Step-by-step explanation:

(0,6) (9,-6)

distance formula =

[tex]d= \sqrt{(x_2-x_1)²+(y_2-y_1)² }[/tex]

lets put our numbers

[tex]d= \sqrt{(0 - 9)²+(6+ 6)² }[/tex]

so answer will be = 15, A

Answer:

68,328,000

Step-by-step explanation:

take the minutes by the hours then by the amount of days in a year then by the amount of years and multiply it all

Answer:

heart cards 9/28

spade cards 4/27

diamond card 18/26

Step-by-step explanation:

you have 9 heart cards in all and 28 in all

take one heart out and not replacing you have 27

you have a 4/27 chance of getting spade because you have 4 spades out of 27 cards

now you have 26 cards from taking the one spade & heart out you have a 8/26 chance of getting diamond but a 18/26 chance of getting any other card

Answer:

Step-by-step explanation:

(This is technically a personal opinion question) In MY opinion all government run things from libraries to schools to the military come from taxes. If you don't agree with how the government spends the money that you pay in taxes yet enjoy/use government facilities then you have no room to complain and not pay your taxes.

Answer:

[tex]y = \frac{1}{3} x[/tex]

Step-by-step explanation:

Una recta que es perpendicular a la pendiente de una ecuación es la recíproco negativo. de l

a ecuación original.

Primero, este problema está en forma estándar, así que conviértalo a la forma de intersección de pendiente

[tex]3x + y - 9 = 0[/tex]

[tex]3x + y = 9[/tex]

[tex]y = 9 - 3x[/tex]

[tex]y = - 3x + 9[/tex]

Ahora encuentre el recíproco negativo de la pendiente que es -3x

[tex] \frac{ - 3}{1} [/tex]

[tex] - ( - \frac{3}{1} [/tex]

[tex] \frac{1}{3} [/tex]

La pendiente es 1/3, así que sepa que introduzca 0 para nuestro valor X para encontrar nuestro valor y

[tex]y = \frac{1}{3} x[/tex]

[tex]y = \frac{1}{3} (0)[/tex]

y=0

0,0

Answer:

2.5%

Step-by-step explanation:

part over whole = part over whole

0.5/20 = p/100

then cross multiply

(0.5)(100) = 20p

50 = 20p

then divide both sides by 20

2.5 = p

To check, change 2.5% to a decimal by dividing by 100, (=0.025) then multiply by 20.

20 x 0.025 = 0.5

Answer:

8

Step-by-step explanation:

136=17b

b=136/17

b=8

Answer:

True

have a nice day!!

Answer: The team needs to win 15 more games to get 90% winning percentage.

Step-by-step explanation:

80%=4/5  divide 15 by 5 and you get 3, which is 1/5 of 15, so you must multiply it by 4 to get 80% of 15 which is 3*4=12

If you want 90%(or 9/10) of 30, you do the same thing, and you get 27.

27-12=15.

The team needs to win 15 more games to get 90% winning percentage