A bag contains 12 red, 30 blue, 20 green, 10 yellow, and 8 black marbles. Nancy chooses 1 marble from the bag. What is the probability that the marble is red, blue, or black?

A.18
B.38
C.58
D.78

Answers

Answer 1

Step-by-step explanation:

Total marbles = 12 + 30 + 20 + 10 + 8 = 80

Probability = 12 + 30 + 8 = 50

= 50 / 80 = 5 / 8


Related Questions

The density of oxygen is 0.001332 gram per cubic meter. Represent 0.001332 in scientific notation.

Answers

Answer:

1.332 × 10-3

Step-by-step explanation:

you move the decimal point to the right until there's only one digit on the left side of it. the exponent is 3 because that's the number of places you moved the decimal point, and it's negative because you moved it to the right. if you move the decimal to the left it is positive, to the right is negative :)

By basic calculation We can represent 0.001332 in scientific notation as [tex]1.332\times 10^{-3}[/tex]

What is scientific notation?

Scientific notation is a way of expressing numbers big numbers in short form with approximate values.

Given number is 0.001332

we can write 0.001332 as

1332/1000000

or we can write it as

1.332/1000

and now we can write it in Scientific notation form as  

[tex]\frac{1.332}{10^3}\\\\1.332\times 10^{-3}[/tex]

By basic calculation We can represent 0.001332 in scientific notation as [tex]1.332\times 10^{-3}[/tex]

To learn more about scientific notation visit :  https://brainly.com/question/5756316

20 POINTS! The following graph shows the amount of money Jonah earns when he babysits for the family who lives next door. Based on the graph, which of the following statements are true? Select ALL that apply.

When Jonah babysits one hour, he earns $7.50.
The equation e = 4 h can be used to describe this situation.
Jonah earns $20 to babysit for 5 hours.
The number of hours Jonah works depends on how much he earns.

Answers

Answer:

The equation e = 4 h can be used to describe this situation.

Jonah earns $20 to babysit for 5 hours.

Step-by-step explanation:

When Jonah babysits one hour, he earns $7.50.

looking at the graph we see at 1 hour he earns 4 dollars false

The equation e = 4 h can be used to describe this situation.

The slope is 4   so y = 4x   e = 4h  would also work   true

Jonah earns $20 to babysit for 5 hours.

Using our equation from above

e = 4*5 = 20   true

The number of hours Jonah works depends on how much he earns.

This would be false

The dependent variable is on the y axis.  The amount he earns depends on how much he works

Answer:

the second one and the third one

Step-by-step explanation:

Which of these are NOT expressions?
Check all that are true.

123

9 + 3 = 12

3(4x + 5)

6 − 5 − 4 = z

3z + 2x


HELP

Answers

Answer:

6-5-4=z

9+3=12

Step-by-step explanation:

Expressions has no equal sign

“9 + 3 = 12” and “3(4x + 5)”

Evaluate: 4+8= 2 x (6 - 3)
16
33
25

Answers

Answer:

I'm not so sure because there is no solution to that equation

Step-by-step explanation:

Always start by solving the parenthesis equation and multiply, divide, subtract, or add before you get into adding. Next you add those 2 numbers together and when you look at the answer on the left and on the right.. when they are different numbers, you know there is no solution. I'm not sure if this helped and if it didn't I'm sorry.. I tried.

What is the surface area of the prism in square inches

Answers

Answer:

276

Step-by-step explanation:

Hope this helps.


Which of the following describe 9.49?

Answers

Answer:take 9x49

Step-by-step explanation:

You’ll get the answer

simplify the following equation
x^5 * x^-3 =x^n
A. 4
B. -2
C. 2
D. 8

Answers

Answer:

x=2

Step-by-step explanation:

x^5 * x^-3 =x^n

We know a^b * a^c = a^(b+c)

x^(5 -3) =x^n

x^2 = x^n

2=n

Answer:

C. 2

Step-by-step explanation:

When you are multiplying the same base number with exponents you add the exponents. 5-3=2. So, n=2. Hope this helps :)

A coin has heads on one side and tails on the other the coin is tossed 12 times and lands heads up four times which best describes what happens when the number of trials increases significantly

Answers

Answer:

The number of occurrences for both possible events(heads or tails) will be closer to the expected outcome. By that I mean that of all the total outcomes heads will be about half of them and so will tails.

Drag the tiles to the correct boxes to complete the pairs.
Match each quadratic equation with its roots.

Answers

Answer:

Step-by-step explanation:

Emily is a very good student. She is more likely to attend class than to miss class. Which could be the probability that she misses class tomorrow?

A
–0.4
B
0.1
C
0.7
D
1.2

Answers

Answer:

Im pretty sure it is c

Step-by-step explanation:

An SUV costs $25,000. Their is 3% tax. How much will the SUV costs with tax?

Answers

Answer:

$25,750

Step-by-step explanation:

25000 x 3%=750

25000+750

Answer:

25,750.

Explanation:

Step one: Find what 3 percent of 25000 is.

25000 divided by 3 (tax percentage)

3% of 25,000 =750

Step two: add that to the original cost of the SUV.

25,000 (original cost) + 750 (3% of original cost) = 25,750

Please mark as brainliest,I need a few more :D

A snack mix recipe calls for 2 1/2 cups of pretzels, 4 1/2 cups of dry cereal, 2 1/4 or peanuts, and 3/4 cups of raisins.If you want to make servings of 3/4 cup each, how many can you have with those ingredients?

Answers

Answer:

13 1/3 cups

Step-by-step explanation:

find common denominator then add all of the fractions then divide by 3/4

If the probability of a chance event is 0.67, it is less likely to happen
than which of the following probabilities of another chance event?
Select one:

0.76

0.61

0.65

0

Answers

Answer:

.76

Step-by-step explanation:

report this



what is 79 to the power of 3 x 7 - 3.78

Answers

Answer:

4.75486852E32

Step-by-step explanation:

21-3.78=17.22

[tex]79^{17.22}[/tex]=4.75486852E32

Find the vertex of the parabola whose equation is y = x^2 - 4x + 6.
(-2, 18)
(2, 2)
(2,6)

Answers

Hey there !

The vertex of the parabola is B. ( 2, 2)

Hope this helps !

a bookmark is 3.7 centimeters wide and 6.2 centemeters tall. what is its area of the bookmark

Answers

Answer:

22.94

Step-by-step explanation:

3.7x6.2

multiply the values

Answer:

22.94

Step-by-step explanation:

Area of a rectangle = l x b

                                  = 6.2 x 3.7

                                  = 22.94 square cm              

Which is a solution to x + 5 = 8?

Answers

Answer:

 x = 3

Step-by-step explanation:

Step  1  :

Solving a Single Variable Equation :

1.1      Solve  :    x-3 = 0  

Add  3  to both sides of the equation :  

                     x = 3

Then you will get the answer that is  x = 3

Hope this helps

Answer:
x=3
Reason:
x+5=8
-5 from both sides
8-5=3
so x=3

Vanessa drew a line that was 6 inches long. She divided the line into 7 equal-length segments.
How long was each segment?

7/6 in

1/7in

13in


6/7in

Answers

Answer:

1/7

Step-by-step explanation:

At the end of the school year a school system has a table with the total absences and tardies in its 10 schools what is the best way to display these data?

A. Bar Graph
B.Circle Graph
C. Stem and leaf plot
D.Ogive graph

Answers

Answer:

A

Step-by-step explanation:

The data below show the weights, in pounds, of a group of professional football players.
325, 310, 289, 288, 285, 285, 285, 280, 280, 273
The mean of the data set is 290 pounds. What is the mean absolute deviation of the data
set, to the nearest whole number?
26
18
11
5

Answers

Answer:

26

Step-by-step explanation:

The mean absolute deviation of the data is 11.

The mean absolute deviation (MAD) of a data set is the average distance between each data value and the mean.

To find the mean absolute deviation of the data, start by finding the mean of the data set. Find the sum of the data values, and divide the sum by the number of data values.

Given: The data below show the weights, in pounds, of a group of professional football players.

325, 310, 289, 288, 285, 285, 285, 280, 280, 273

The mean of the data set is 290 pounds.

How to find the mean absolute deviation of the data

set, to the nearest whole number?

The average absolute deviation is

[(325-290)+(310-290)+|(289-290)|+|(288-290)|+3|(280-290)|+21(280-290)|+|(273-290)|]/10

=> (35+20+1+2+5+5+5+10+10+17)/10

=> 11.

Learn more about mean on : https://brainly.com/question/16432219

#SPJ2

Someone pls help!!!!

Answers

Answer:

c

Step-by-step explanation:

Answer:

11.1

Step-by-step explanation:

sin48=x/15 (x is over 15)

then multiply each side by 15 and it cancels on the right.

you should be left with:

15sin48=x

type that in desmos and you should get:

11.1471723822

BRAINLIEST!!
3. Describe the shape of the data distribution.

Answers

Answer: postitive skewed

this is correct

Yes it is the third one for This question

Find the area. Will mark brainliest.

Answers

Answer:

Step-by-step explanation:

base b = 11 cm

Height h = 6 cm

[tex]Area=\frac{1}{2}bh\\\\=\frac{1}{2}*11*6\\[/tex]

= 11 * 3

= 33 cm²

Answer:

33 cm squared

Step-by-step explanation:

A = 1/2bh

A = 1/2 (11) (6)

A = 1/2 (66)

A = 66/2

A = 33

Identify the domain and range from the graphed exponential function.

Question 1 options:

Domain: All Real Numbers Range: y < -4


Domain: All Real Numbers Range: y > -4


Domain: (−∞,∞) Range: All Real Numbers


Domain: x > -4 Range: y > 2

Answers

Answer:idk just here for the points

Step-by-step explanation:

It's quadratic, linear or exponential?​

Answers

Looks exponential to me

Iris had invited 105 people to her party. She needs 7 large tables to have an equal number of people at each table. Which equation shows how many people will sit at each table

Answers

Answer:

105/7= 15 people will seat at each table.

Step-by-step explanation:

What is a reasonable estimate for the volume of a number cube:
8 cm3, 27 in?, or 1 ft??

Answers

Answer:

I think the 8 cm one :D

What equation is represented in this graph.
15 Points need ASAP.
Thanks!

Answers

Answer:

y = [tex]e^{x}[/tex]

the correct answer is “c”

The length of two sides of a right triangle are leg 12 M and hypotenuse 15 M find find the length of the third side

Answers

Answer:

9 M

Step-by-step explanation:

a^2+b^2=c^2

12^2+b^2=15^2

144+b^2=225

-144         -144

b^2=81

b=sqrt of 81

b=9

Find the radius of the sphere with the given volume 36πin^3

Answers

The answer is 3 inches

Answer:

3 in.

Step-by-step explanation:

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