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
8090 [49]
2 years ago
13

Can someone please help!!!! Will mark brainliest!

Mathematics
1 answer:
Semenov [28]2 years ago
7 0

Answer:

b

Step-by-step explanation:

You might be interested in
Ms. Monroe mixes 200 cubes of 4 different colors for a project. She then uses a scoop to place 20 cubes into each of 10 paper ba
Scilla [17]

Answer:

The mean no. of red cubes is more than the median no. of red cubes.

Step-by-step explanation:

According to the question, we can prepare the following table denoting the no. of bags containing any number of red cube(s). The no. of red cubes in each bag can theoretically be any no. between 0 and 20 (both end inclusive) as in total each bag contains 20 cubes of different colors.There are as a whole 10 bags (given).

No. of red cubes           No. of bags           (x_{i}f_{i})

 (x_{i})                                        (f_{i})

    0                                     2                             0

     1                                     0                             0

     2                                    2                             4

     3                                     1                             3

     4                                     1                             4

     5                                     0                            0

     6                                     1                              6

     7                                      2                           14

      8                                     1                             8

      9                                     0                            0

    10                                      0                            0

 Total                                 10                            39

Now, no. of bags containing no. of red cubes  above 10   is  0   [since there are as a whole 10 bags only]

       

So, from  the table we  get that  mean no, of red cubes in each bag

  = \frac {\sum_{i =1}^{10}x_{i}f_{i}}{\sum_{i=1}^{10}f_{i}}

  =  39/10 = 3.9

Also, from the table, we get that, no. of bags with no. of red cubes ≤ 3

= (2 + 2 + 1) = 5

and, no. of bags with no. of red cubes  ≥ 4

= (1 + 1 + 2 + 1) = 5

Also there are 1 bag each for no. of red cubes = 3 and 4

So. median no. of red cubes = (3 + 4)/2 = 3.5

So, we get that the mean no. of red cubes is more than the median no. of red cubes.

5 0
3 years ago
Read 2 more answers
If f(x) and f–1(x) are inverse functions of each other and f(x)=2x+5, what is f–1(8)?
yarga [219]

f(x)=2x+5

first find inverse

write it without f(x)

y = 2x +  5

x = 2y + 5  swap the variables, now solve for y

-  5      -5

x - 5 = 2y

/2         /2  divide both sides by 2

(x-5)/2 = y


so f-1(x) = (x-5)/2

f-1(8) = (8-5)/2

         = (3)/2

f-1(8) = 3/2

6 0
3 years ago
Read 2 more answers
Helppppppp meee plsss
77julia77 [94]
30.4 is the correct answer hope this helps
4 0
3 years ago
Read 2 more answers
Solve:<br><br> a.x3+x2-8x - 12x+2<br> b. x3-4x2-3x + 18x-3<br> c. x2 + 4x + 4<br> d. x2 - 6x + 9
NeTakaya
<h2>Steps:</h2>

So firstly, this function is asking us to divide f(x) by g(x) so let's set that up as such:

(\frac{f}{g})(x)=\frac{x^2-x-6}{1}\div \frac{x-3}{x+2}

Next, remember that <u>dividing by a number is the same as multiplying by its reciprocal.</u> To find the reciprocal of a number, flip the numerator and denominator around. With this info, flip the second fraction to it's reciprocal and change the sign to multiplication:

(\frac{f}{g})(x)=\frac{x^2-x-6}{1}\times \frac{x+2}{x-3}

Next, we are going to factor x² - x - 6. Firstly, what two terms have a product of -6x² and a sum of -x? That would be -3x and 2x. Replace -x with 2x - 3x:

(\frac{f}{g})(x)=\frac{x^2+2x-3x-6}{1}\times \frac{x+2}{x-3}

Next, factor x² + 2x and -3x - 6 separately. Make sure that they have the same quantity on the inside of the parentheses:

(\frac{f}{g})(x)=\frac{x(x+2)-3(x+2)}{1}\times \frac{x+2}{x-3}

Now you can rewrite it as:

(\frac{f}{g})(x)=\frac{(x-3)(x+2)}{1}\times \frac{x+2}{x-3}

Next, multiply:

(\frac{f}{g})(x)=\frac{(x-3)(x+2)^2}{x-3}

Next, divide:

(\frac{f}{g})(x)=(x+2)^2

And lastly, simplify:

  • A good tip: (x+y)^2=x^2+2xy+y^2

(\frac{f}{g})(x)=x^2+4x+4

<h2>Answer:</h2>

<u>The correct option is C. x² + 4x + 4.</u>

7 0
3 years ago
Alaska has a coastline of about 6.64 thousand miles. Florida has about 1.35 thousand miles of coastline. How many times more mil
victus00 [196]
All you need to do is divide 6.64 and 1.35. you would get 4.91851852. But, you need to round to the nearest tenth so it would actually be 4.9.
3 0
3 years ago
Other questions:
  • Simon used a probability simulator to pull 3 colored marbles from a bag and flip a coin 50 time
    10·1 answer
  • Find the perimeter of a rectangle with a length of 8.4 inches and a width of<br> 12.2 inches.
    15·1 answer
  • How to solve? I basically want to know the first step..
    11·2 answers
  • Explain how you can use a multiplication equation to find 36÷6​
    8·1 answer
  • Helppp meeee plsssss
    11·1 answer
  • State if the two vectors are parallel, orthogonal, or neither.<br><br> u=18i+8j<br><br> v=9i+4j
    15·1 answer
  • 5.3 lesson 14 problem set answer
    13·1 answer
  • You are responsible to provide tennis balls for a tournament. You know that a ball bounces like new when it is dropped and it bo
    9·1 answer
  • Write the Roman numeral CLXXIX in standard form.​
    7·2 answers
  • SOLVE
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!