Could you please answer these

Answer:

The probability is  [tex]P(K)  =   \frac{ 28 }{195} [/tex]

Step-by-step explanation:

From the question we are told that

   The number of green marbles is  [tex]n_g  =  3[/tex]

    The number of red marbles is  [tex]n_b  =  5[/tex]

     The number of red marbles is  [tex]n_r  =  7[/tex]

Generally the total number of marbles is mathematically represented as

       [tex]n_t  =  n_r  +  n_g + n_ b[/tex]

        [tex]n_t  =  7 +  3 + 5[/tex]

         [tex]n_t  = 5 [/tex]

Generally total number of marbles that are not red is  

     [tex]n_k  =  n_g +  n_ b[/tex]

=>  [tex]n_k  =   3 +   5[/tex]

=>  [tex]n_k  =  8[/tex]

The probability of the first ball not being red is mathematically represented as  

      [tex]P(r') =  \frac{n_k}{n_t}[/tex]

=>  [tex]P(r') =  \frac{ 8}{15}[/tex]

The probability of the second ball not being red is mathematically represented as

      [tex]P(r'') =  \frac{n_k - 1}{n_t -1}[/tex]

=>  [tex]P(r'') =  \frac{ 8 -1 }{15-1}[/tex] (the subtraction is because the marbles where selected without replacement  )

=>  [tex]P(r'') =  \frac{ 7 }{14}[/tex]

The probability that the first two balls  is  not red is mathematically represented as

    [tex]P(R) =  P(r') *  P(r'')[/tex]

=>  [tex]P(R) =  \frac{ 8}{15} *   \frac{ 7 }{14}[/tex]

=>  [tex]P(R) =  \frac{ 8 }{30}[/tex]

The probability of the third ball being red is mathematically represented as

   [tex]P(r) =  \frac{n_r}{ n_t -2}[/tex] (the subtraction is because the marbles where selected without replacement  )

     [tex]P(r) =  \frac{7}{ 15 -2}[/tex]

=>    [tex]P(r) =  \frac{7}{ 13}[/tex]

Generally the probability of the first two marble not being red and the third marble being red is mathematically represented as

        [tex]P(K)  =  P(R) * P(r)[/tex]

         [tex]P(K)  =   \frac{ 8 }{30} * \frac{7}{ 13}[/tex]

=>      [tex]P(K)  =   \frac{ 28 }{195} [/tex]

Answer:

I would say (2,-9) is her projection

Answer:

ok bet my niqgqa

Step-by-step explanation:

Answer:

250 Hamburgers

302 cheeseburgers

Step-by-step explanation:

you sold X number of hamburgers

and x+52 number of cheeseburgers

total was 552

make an equation x+x+52=552

so 2x+52=552

now solve for x

x=250

to find cheeseburgers

(250)+52=302

hamburgeres =x=250

Answer:

you could have something like umm -36 + 30 It also gives the answer as -12 so I guess you could choose any two numbers that add up to -12

Answer:

26/5

Step-by-step explanation:

(2)(2)(4)/5 −8+10

(4)(4)/5−8+10

=16/5−8+10

=−24/5+10

=26/5

Alternate form

5.2

Answer:

multiply

Step-by-step explanation:

you multiply them together to get the answer. I do not know how else to explain really.

Answer:

Angle YZX = 19.7 degrees

This is the same as saying angle Z = 19.7 degrees

====================================================

Explanation:

Since there are only three letters, and nothing else, we can refer to "angle YZX" as "angle Z" to shorten things. The middle letter is what determines the vertex of the angle.

With Z as the reference angle, side XY = 7.5 is the opposite side. It's the leg furthest from the reference angle. SIde ZY = 22.3 is the hypotenuse. The hypotenuse is always opposite the 90 degree angle.

We'll use the sine rule since it connects the opposite and hypotenuse

sin(angle) = opposite/hypotenuse

sin(Z) = XY/ZY

sin(Z) = 7.5/22.3

sin(Z) = 0.336323

Z = arcsin(0.336323)

Z = 19.653008983888

Z = 19.7

In this case, rounding to 3 sig figs means rounding to 1 decimal place (the first two digits are part of the whole number while the last digit is the decimal portion).

Make sure your calculator is in degree mode. The notation "arcsin" refers to arcsine which is the same as inverse sine. Your calculator would likely have the button [tex]\sin^{-1}[/tex] to indicate inverse sine.

Answer:

Degrees: 19.7

Radians: 0.343

Step-by-step explanation:

First, let x = angle YZX.

You can solve this using sine (which as a reminder, is opposite over hypotenuse):

sin(x) = 7.5/22.3

x = arcsin(7.5/22.3)

Now you can grab out a calculator and evaluate.

If it's in degrees: 19.7

If it's in radians: 0.343

(Remember to round to 3 significant figures like the problem said)

I hope this helped you.

Answer:

I think it would 12 and 14

Answer:

9.6 is first

Step-by-step explanation:

9.6 , 9.625, then 9.85 is the order finished the race, the larger the time (number)  the later they crossed the finish line

Hope this helps : )

Answer:

(3,1)   (3,-1)   (-3,1)   (-3,-1)

Step-by-step explanation:

Answer:

[tex] x = 22.5[/tex]

[tex]180 - 4x + 2x = 6x \\ x = 180 \div 8 = 22.5 \\ so \: x = 22.5[/tex]

Answer:

22.5

Step-by-step explanation:

username Maxracker1

Answer:

-6

Step-by-step explanation:

Let "what" be termed as "x".

Set the equation:

3 * x = -18

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Divide 3 from both sides:

(3x)/3 = (-18)/3

x = -18/3

x = -6*

*Note: When you divide a negative number with a positive number, your answer will be negative.

-6 is your answer.

~

The value of number which is 3 times to -18 is -6 .

Given,

3 *x = -18

So,

Let "what" be termed as "x".

Form the equation including the variable x ,

3 * x = -18

Isolate the variable, x.

Note the equal sign, what you do to one side, you do to the other. Divide 3 from both sides:

(3x)/3 = (-18)/3

x = -18/3

x = -6

-6 is the required answer .

Know more about equations,

https://brainly.com/question/20906227

#SPJ6

Answer: five billion six hundred four million five hundred twelve thousand eight

Step-by-step explanation:

Answer:

Im not sure

Step-by-step explanation:

but I advise you use a calculator or as an teacher

9514 1404 393

Answer:

Step-by-step explanation:

1. Put the value of x in the expression and see what the angle measure is.

  m∠A = 4x +12 = 4(15) +12 = 60 +12 = 72

The angle is less than 90°, so is acute.

__

2. The measure of a right angle is 90°, so you have ...

  4x +22 = 90

  4x = 68 . . . . . subtract 22; next, divide by 4

  x = 17

Answer:500-25x

Step-by-step explanation:

Answer:  60% of 300 is 180

Answer:

30 2/3

Step-by-step explanation:

Answer:

.25 pounds

Step-by-step explanation:

Unfortunately, the type of model that is supposed to be used is not given so I will just solve what I can. So each friend gets and equal amount. If we have 1 pound in the beginning, and 4 friends, then we have to divide the candy by 4. So we do 1 pound/4=.25 pounds. If you want to go above and beyond, we can always convert the pounds into ounces and make it so each friend gets 4 ounces of candy.

Answer:

28.5 equals ab 29 bracelets

Step-by-step explanation:

Answer:

29 bracelets

Step-by-step explanation:

The first thing you (always) need to do is highlight important details. Some things you should highlight are: The entry fee is $150, He makes $4 off of each bracelet, and that he has $36 so far. We know that 4 times 10 is 40. if we add 40+ the 36, we get 76. now we need 74 more dollars, so let's do: 74 divided by 4 = 18.5. since we can't do that, we add one more bracelet to make it 19. This makes sure we get enough money for the fee. All we have to do now is add is together. 10+19= 29 bracelets

Answer:

1 5/7

Step-by-step explanation:

2 2/5 x 5/7

= 12/5 x 5/7

= 12/7

1 5/7

The correct answer is C. 28x – 56 = 84

Explanation:

Writing an equation using a description or situation involves including all the factors mentioned and relating these appropriately through mathematical symbols. In the case presented, the correct equation is 56 – 28x = 84. This is because this equation includes the total of boxes Tony took to the party 84 and this has been correctly included after the symbol =. Also, the total of boxes is equal to the boxes tony bought each with 28 cookies, which can be represented as 28x (x represents the value of boxes that multiplied by 28 leads to the total of cookies) minus the cookies Tony bought (2 boxes each with 28 cookies). This makes the final equation to be 28x – 56 = 84.

Answer:

798

Step-by-step explanation:

to get the answer you add 400 + 380 + 18

Answer:

400 + 380 + 18 = 798 :)

Answer:

81.6

Step-by-step explanation:

8 divided by 5 is 1.6.

Hope this helps! Sorry if it is incorrect :(

Answer:

b

Step-by-step explanation:

Answer:

b) 244*4= b

Step-by-step explanation: