1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anarel [89]
4 years ago
11

Marnie conducted an experiment using a bag of 12 marbles containing an equal number of blue, red, and green marbles. She randoml

y chose one marble, noted the color, and returned the marble to the bag. Marnie did this for a total of 20 trials. The table below shows the results.
Event
Count
Blue
7
Red
8
Green
5

What was the experimental probability of choosing a blue marble from a bag?
Mathematics
2 answers:
aivan3 [116]4 years ago
7 0

Answer:7/20

Step-by-step explanation:there’s 7 blue marbles and she did It for 20 times

sdas [7]4 years ago
4 0

Answer:  =\dfrac{7}{20}

Step-by-step explanation:

Given : The number of times blue marble drawn from the bag =7

The total number of trials = 20

Then , the experimental probability of choosing a blue marble from a bag is given by :-

\text{P(Blue)}=\dfrac{\text{Number of times blue marble appeared}}{\text{Total trials}}\\\\\Rightarrow\ \text{P(Blue)}=\dfrac{7}{20}

Hence, the experimental probability of choosing a blue marble from a bag = =\dfrac{7}{20}

You might be interested in
PLZ HELP ASAP!!! Will give brainlest ❗️❗️❗️❗️
ohaa [14]

Answer:

<em>I</em>(-1,3)

Step-by-step explanation:

Moving 3 units left adds -3 to x value

Moving 6 units up adds 6 to the y value

2 - 3 = -1

-3 + 6 = 3

(-1,3)

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

3 0
3 years ago
Read 2 more answers
-5+22=r-4+3r+5<br> I need help please and thank u
Brilliant_brown [7]

Answer:

r = 4

General Formulas and Concepts:

<u>Pre-Alg</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

-5 + 22 = r - 4 + 3r + 5

<u>Step 2: Solve for </u><em><u>r</u></em>

  1. Combine like terms:                    17 = 4r + 1
  2. Subtract 1 on both sides:             16 = 4r
  3. Divide 4 on both sides:               4 = r
  4. Rewrite:                                        r = 4

<u>Step 3: Check</u>

<em>Plug in r to verify it's a solution.</em>

  1. Substitute:                    -5 + 22 = 4 - 4 + 3(4) + 5
  2. Add/Subtract:               17 = 3(4) + 5
  3. Multiply:                        17 = 12 + 5
  4. Add:                              17 = 17
6 0
3 years ago
Factor the greatest common factor from the polynomial 3x^2 + 6x -9
ryzh [129]

Answer:

3(x+3)(x -1)

Step-by-step explanation:

3x^2 + 6x -9

All the terms in this polynomial are divisible by 3. Factor 3 out of this polynomial:

= 3(x^2 + 2x -3)

Now, factor inside the parentheses by grouping:

= 3(x^2 -1x+3x -3)

We knew to split the +2x up into -1x and 3x because -1 and 3 multiply to get -3, which is the last value in the polynomial.

= 3(x(x -1)+3(x -1))\\= 3(x+3)(x -1)

Therefore, the final factored polynomial is 3(x+3)(x -1).

4 0
2 years ago
Help? I’m in need of a answer with all the work shown. Someone? Anyone? Help me plz
Svetach [21]

Hello!

I will make approximations below to the nearest whole number

A. 2√32≈11

B. 5+√18≈9

C. √24≈5

D. √52-3≈4

E. 3√14≈11

F. √20+√26≈10

Based off of what we see here our even numbers are \boxed {D} and \boxed {F}.

I hope this helps!

4 0
3 years ago
If xr-st=r, which expression represents x
Alexus [3.1K]

Answer:

To get an expression relating to x you need to have x alone on one side of your equation. ie x =

Try this:

rx - st = r

remove st from the rx side

rx = r + st

now divide by r

x = (r + st)/r

You now have your expression relating to x

7 0
3 years ago
Other questions:
  • How many times can 52 go into 8
    12·2 answers
  • Is 7.6 repeating greater or less than square root 55
    13·2 answers
  • What’s equal to 4+(4x(5-2) divided by 2
    9·1 answer
  • The diagram shows two vertical masts, AB and CD, on horizontal ground. The height of AB is 500m and the height of CD is 350m. Th
    11·1 answer
  • Your classmate wants you to check her work. She is working on a math question that asks her to determine the slope of a line giv
    13·1 answer
  • Expand.<br> Your answer should be a polynomial in standard form.<br> (7g+2)(5g+4)=
    14·1 answer
  • Ramil collected honey from 9 different beehives and recorded the amount collected, in gallons, from each hive in the line plot s
    14·2 answers
  • BRAINLY + 50 POINTS
    7·1 answer
  • A store manager is marking down washing machines from $820 to $287. What is the discount percentage?
    11·1 answer
  • If f(x) = x² – 5, evaluate: f(x+h)-f(x)/<br> h
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!