can you help me????????????

Answer:

The probability of selecting a marble that is not red, replacing it and then one that  is white is 0.2102

Step-by-step explanation:

Number of red marbles = 7

Number of blue marbles = 12

Number of yellow marbles = 6

Number of white marbles = 9

Total marbles = 7+12+6+9=34

Probability of selecting red marble =[tex]\frac{7}{34}[/tex]

Probability of selecting no red marble = [tex]1-\frac{7}{34}=\frac{27}{34}[/tex]

Now replacing it one marble is drawn again

So, Probability of getting white marble [tex]=\frac{9}{34}[/tex]

So,the probability of selecting a marble that is not red, replacing it and then one that  is white =[tex]\frac{27}{34} \times \frac{9}{34}=0.2102[/tex]

Hence the probability of selecting a marble that is not red, replacing it and then one that  is white is 0.2102

Answer:

A. 4.5

Step-by-step explanation:

Given:

20, 12, 27, 23, 18, 20, 30, 26

Mean = 22

Required:

Calculate the Mean Absolute Deviation (M.A.D)

Since, we have the mean; we start calculating M.A.D by subtracting the mean from each data

20 - 22 = -2

12 - 22 = -10

27 - 22 = 5

23 - 22 = 1

18 - 22 = -4

20 -22 = -2

30 - 22 = 8

26 - 22 = 4

The we find absolute value of the result above

|-2| = 2

|-10| = 10

|5| = 5

|1| = 1

|-4| = 4

|-2| = 2

|8| = 8

|4| = 4

Lastly, we calculate the mean of the above to give M.A.D

[tex]M.A.D = \frac{2 + 10 + 5 + 1 + 4 + 2 + 8 + 4}{8}[/tex]

[tex]M.A.D = \frac{36}{8}[/tex]

[tex]M.A.D = 4.5[/tex]

Option A is correct.

The value of the mean absolute deviation is 4.5 hours if the mean of the data set is 22 hours, option first is correct.

It is defined as the measure to show the variation in data set in other words between the mean and every data value, the distance is known as the MAD.

We have data:

20, 12, 27, 23, 18, 20, 30, 26

Mean of the data X = 22 hours

∑(x - X) = 36

MAD = 36/8 = 4.5 hours

Thus, the value of the mean absolute deviation is 4.5 hours if the mean of the data set is 22 hours.

Learn more about the mean absolute deviation here:

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Answer:

OA = 19.58

Step-by-step explanation:

If we draw the segments OA and OC, we will have an isosceles triangle OAC.

With the property of inscribed angles and central angles that are related to the same arc of the circunference, we have:

mAOC = 2 * mABC

mAOC = 2 * 50 = 100°

As the triangle OAC is isosceles, we have that mOAC = mACO.

Knowing that the sum of internal angles of a triangle is 180°, we have:

mACO + mOAC + 100 = 180

2 * mACO  = 80

mACO = 40°

Now, using the law of sines, we have:

OA / sin(ACO) = AC / sin(AOC)

OA / 0.6428 = 30 / 0.9848

OA = 30.463 * 0.6428 = 19.58

Answer:

f^-1(z) = 2z/z-1

Answer:

Step-by-step explanation:

The function declaration

f

(

x

)

f

(

x

)

varies according to

x

x

, but the input function

z

2

z

2

only contains the variable

z

z

. Assume

f

(

z

)

=

z

2

f

(

z

)

=

z

2

.

f

(

z

)

=

z

2

f

(

z

)

=

z

2

Answer:

Step-by-step explanation:

l = 5 in

w = 5 in

h = 12 in

Surface area of rectangular prism = 2*(lw +wh + hl)

 = 2*(5*5 + 5*12 + 12*5)

  = 2*(25 +60 +60)

  = 2*145

  = 290 in²

Answer:

b

Step-by-step explanation:

Hope this helpsss :)

Answer:

your answer will be: B. y3 - 4 y2 + 2 y - 5

Step-by-step explanation:

Answer: triangular pyramid

Step-by-step explanation: The net shown here is composed of 3 triangular faces and 1 triangular base. The triangular faces tell us that the figure is a pyramid and the triangular base tells us that it's a triangular pyramid. You can always check your answer by tracing the net, cutting it out, and folding it to see what kind of a figure is formed.

Answer:

C. Find the number that shows up the most

Step-by-step explanation:

Answer:

Its 2 bro

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

use the distance formula

y2-y1

_____

x2-x1

2-0

___

Answer: The answer is 12 units

Step-by-step explanation: just finished the unit

Answer:

so it is C

Step-by-step explanation:

a=4

b=5

c=√(4²+5²)=√(16+25)=√41

4+5+√41≈15

Answer:

(11x-3)

Step-by-step explanation:

This is because the two parenthesis are adding together, we can simply combine the like terms 6x and 5x to get 11x.

Then, combine 1/2 + a -3 1/2, which is equal to -3.

(Oh, i didn't see the minus sorry! It's fixed now!)

Answer:

11x -3

Step-by-step explanation:

(6x + 1/2) + (5x - 3 1/2) Add like terms

6x + 5x = 11x

1/2 - 3 - 1/2 = -3

11x - 3

Answer:

Infinite

Step-by-step explanation:

Here are a system of how two equations can be classified ;

• If the gradients are the same but the y-intercepts are different, the system has no solution.

• If the gradients are different, the system has one solution.

• If the gradients are the same and the y-intercepts are the same, the system has infinitely many solutions.

Here is the proof.

3y - 9x = -6

5y - 15x = -10

In

3y - 9x = -6

When x =1

y= 1

When x=3

y= 7

Gradient of 3y - 9x = -6

=∆y/∆x

= (7-1)/ ( 3-1)

=(6)÷ 2

= 3

5y - 15x = -10

When x= 1

y = 1

When x=3

Y=7

Gradient of 5y - 15x = -10

=∆y/∆x

= (7-1)/ ( 3-1)

=(6)÷ 2

= 3

Since the gradients are the same the system has infinitely many solutions.

Answer:I think one is x

Step-by-step explanation:

Answer:

it is 752 blow sea level

Step-by-step explanation:

just now took it

Answer:

752 below sea level

is the correct answer the other person was right

Step-by-step explanation:

just answered the question

Step-by-step explanation:

...

the answer is 49/40

Answer:

168

Step-by-step explanation:

You just need to triple the answer to get 168.

Answer:

-3y^2-7y+6

Step-by-step explanation:

We can use foil to solve this equation:

(-3y+2)(y+3)=

(-3y*y)+(-3y*3)+(2*y)+(2*3) (symplify)=

-3y^2-9y+2y+6

Which equals to -3y^2-7y+6

We can use FOIL to solve.

(-3y + 2)(y + 3)

(-3y * y) + (-3y * 3) + (2 * y) + (2 * 3)

-3y^2 + -9y + 2y + 6

-3y^2 + -7y + 6

-3y^2 - 7y + 6

The answer is A

Best of Luck!

Answer:

x = 10 units

Step-by-step explanation:

The formula for the area of a triangle of base x and height h is A = (1/2)(x)(h).

Here A = (1/2)(x)(8) = 40, so 8x = 80 and x = 10 units

If we look at this triangle we can see the straight line (the height). We want to use the height to figure out the side? Well divide 40 with the height (8). And now you get 5(cause 5*8 is 40. duh)

Answer:

a

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

Answer:

The cups of juice that Yesenia buys are:

Step-by-step explanation:

To solve this, you need to know the conversión below:

Now the paragraph mentions that Yesenia buys 1 quart of juice (that refers to a quart of gallon), then, having the conversion above we can operate with a rule of three:

Solving this we have:

In the first purchase, Yesenia actually buys 4 cups (that is the same to 1 quart of gallon), next she buys one eighth, then we operate again with the first conversion but using this new quantity:

Solving this we have:

By last, we add every purchase:

Answer:

The average rate of change is 1 over 3, or just 1/3. The y-values change 1 unit every time the x-values change 3 units, on this interval. Finding average rate of change from a word problem.

Step-by-step explanation:

hope this helps plz mrk brainliest

Answer:

the answer is 40

Step-by-step explanation:

you have to multiply 8x10=80 divied by 20 which equal 40

Answer:

c

Step-by-step explanation:

Answer:

11.66

Step-by-step explanation:

Pythagorean theorem: a^2+b^2=c^2

6^2+10^2=c^2

36+100= c^2

sqrt(136)= sqrt(c)

c= 11.66

Answer:

[tex]3x^{2}[/tex] +x -6 ; x = 3

Step-by-step explanation:

PART 1: The Polynomial

1. Set up the Equation: (x+3)(3x-2) - 6x

You want to find the area of the larger of the 2 rectangles that way you can subtract the area of the smaller one to get the shaded area (if that makes sense). You multiply length by width to get the area so you will multiply (x+3) by (3x - 2). The same applies to the smaller of the two rectangles, so that will be 6x.

2.FOIL: [tex]3x^{2}[/tex] - 2x + 9x -6 - 6x

You are going to want to foil (x+3) and (3x-2). If you are unfamiliar with the FOIL method I would recommend watching a Khan Academy video about it.

3. Simplify: [tex]3x^{2}[/tex] +x -6

Add and subtract like terms. This will be your polynomial.

PART 2: The Value of x

1. Set up the Equation: [tex]3x^{2}[/tex] +x -6 = 24

You will set the polynomial to equal 24 the polynomial and number both equal the size of the shaded area

2. Subtract: [tex]3x^{2}[/tex] +x -30 = 0

Subtract 24 from both sides.

3. Factor: (3x + 10)(x - 3) = 0

4. Set each group to equal zero.

  a. 3x + 10 = 0

      3x = -10

      x = -10/3

  ----------------

  b. x - 3 = 0

   x = 3

5. Check both the answers in [tex]3x^{2}[/tex] +x -6 = 24 to see if your answers are correct. The answer would be x = 3.

Polynomial representing the area of the shaded region will be (3x² - x - 6) square units and the value of 'x' is 3.

       Area of a rectangle = Length × Width

Given in the picture,

        Length = (x + 3) units

        Width = (3x - 2) units

        Length = x units

        Width = 6 units

Area of the shaded region = Area of the larger rectangle - Area of the smaller rectangle.

Area of the larger rectangle = (3x - 2) × (x + 3) square units

Area of the smaller rectangle = 6x square units

Area of the shaded region = (3x - 2)(x + 3) - 6x

                                            = 3x(x + 3) - 2(x + 3) - 6x

                                            = 3x² + 9x - 2x - 6 - 6x

                                            = (3x² + x - 6) square units

If the area of the shaded region is 24 square units.

3x² + x - 6 = 24                 [Substitute the values]

3x² + x - 30 = 0

3x² + 10x - 9x - 30 = 0      [Factor the equation]

x(3x + 10) + 3(3x + 10) = 0

(x - 3)(3x + 10) = 0

[tex]x=3,-\frac{10}{3}[/tex]

      Therefore, polynomial representing the area of the shaded region will be (3x² - x - 6) square units and the value of x is 3.

Learn more about the area of a rectangle here,

https://brainly.com/question/1256199?referrer=searchResults

Answer:

B = 42.9°

C = 87.1°

c = 7.4

Step-by-step explanation:

In this problem we are given two sides and one angle of a triangle ABC. The given values are:

a = 9

b = 8

A = 50°

In this case, there wil be only one solution, because the side opposite the given angle (side a) is longer than side b that was also given.

Calculating, let's the the law of sines.

[tex] \frac{sin A}{a} = \frac{sin B}{b} = \frac{sin C}{c} [/tex]

[tex] \frac{sin 50}{9} = \frac{sin B}{8} = \frac{sin C}{c} [/tex]

Taking for A & B, we have:

[tex] \frac{sin 50}{9} = \frac{sin B}{8} [/tex]

Let's cross multiply

(sin 50°)(8) = 9 sinB

Solving further,

[tex]sin B = \frac{8 sin 50}{9}[/tex]

[tex] sin B = \frac{6.128}{9}[/tex]

[tex] B =sin^-^1(0.68)[/tex]

B = 42.9°

Since the total angle of a triangle is 180°, to find C, we have:

C = 180 - 50 - 42.9

C = 87.1°

To find the length of c, let's also use the sine formula.

[tex]\frac{sin B}{b} = \frac{sin C}{c} [/tex]

[tex]\frac{sin 42.9}{8} = \frac{87.1}{c} [/tex]

Cross multiplying

8c = 87.1 sin 42.9

[tex] c = \frac{87.1 sin42.9}{8} [/tex]

c = 7.4

Merek got the correct sum, but her decomposition of 347 is incorrect.

Arithmetic is a branch of mathematics that deals with the study of numbers, their properties, and their operations. It involves the basic operations of addition, subtraction, multiplication, and division.

Here,
Merek's mistake is that she incorrectly decomposed the two-digit numbers 47 into 40 and 7 instead of 30 and 17.

To add 260 and 347, we can align the digits vertically:

 260

+ 347

-----

 607

So, the sum is 607.

Merek decomposed 347 as 300 + 40 + 7, which gives:

 260

+ 300

+  40

+   7

-----

 607

So, Merek got the correct sum, but her decomposition of 347 is incorrect. She should have decomposed 347 as 300 + 40 + 7, or as 300 + 30 + 17, instead of 300 + 40 + 7.

Learn more about arithmetic here:

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Answer:

11x -35

Step-by-step explanation:

5(x – 7) + 6x.

Distribute

5x - 35 +6x

Combine like terms

11x -35

Answer:

11x-35

is the answer