I need help cause im brain dead

Answer:

1 5/7

Step-by-step explanation:

2 2/5 x 5/7

= 12/5 x 5/7

= 12/7

1 5/7

Answer:

The  variable are

A and  B

Step-by-step explanation:

Generally we can define a variable as a name of a placeholder representing a value  now considering the option to be selected from we see that

    The students' verbal SAT scores is a variable  because it is a phrase or a place holder that represent a value (in the is case a  numerical value)  which the score its self

    The second option  The students' percentage of words that were correctly recognized on the original list is also a variable because it is a placeholder of a name (in this case a phrase ) that represented the actual value itself

  The  third option The 75 students is not a variable because it is not representing any value but itself is the value

  The  third option The 750 students is not a variable because it is not representing any value but itself is the value

Answer: D/193,560

Step-by-step explanation: 193,560 divided by 5 = 38712

193,560 divided by 6 = 32260

Answer:

D

Step-by-step explanation:

Answer:

1,120 rooms

Step-by-step explanation:

You need to find out how many hotel rooms are on one floor, and then multiply that by 28. So each room is 16ft x 28ft, which comes out to be 448ft^2. Then to find how many of these rooms go onto one floor, you must divide 18,000 by 448. This equals about 40. So 40 rooms per floor, times 28 floors is: 1,120. And that's your answer! Make sure you understand how we got that. If you have any questions I can help! :)

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:

7x + 3=6 that is the equation

Answer:

f(-2x+4) = -10x+18

Step-by-step explanation:

Answer:

733 I hope that helps! Sorry if its incorrect

Answer: Two angles are called complementary when their measures add to 90 degrees. Two angles are called supplementary when their measures add up to 180 degrees.

Step-by-step explanation:

Answer:

90°

Step-by-step explanation:

Answer:

30 2/3

Step-by-step explanation:

Answer:Response variable (s)-concentration, (s): Treatment- 2,6,12 hours,Replication(s)-10/20/30 hours

Experimental Unit- dark/light

Factors-color/hours

Step-by-step explanation:

Factors refer to explanatory variables tat are being studied in an experiment. They are manipulated in order to obtain a response (dependent) variable.

Treatments refer to a combination of factor levels in the experiment. Each factor has two or more levels

The experimental unit refers to the physical entities assigned at random to treatments during the experiment.

Replication refers to the number of times the same experiment is carried out. It enhances the reliability of the result of an experiment.

The concentration is tested by titration with potassium permanganate, and each sample is tested twice Replication-10/20/30 hours.

We have to determine

The concentration is tested by titration with potassium permanganate, and each sample is tested twice.

Hydrogen peroxide is a chemical compound that is gaseous in nature. Its viscosity is greater than that of water.

Since it is unstable it slowly decomposes in the presence of light to form water and oxygen.

The control experiment is necessary for the determination of reliability and statistical significance of results obtained.

Replication helps to ensure accuracy and randomization aids us in making quality generalizations from experimental data.

Testing the concentration of hydrogen peroxide decanted to dark bottles is the control experiment.

Testing the concentration of the species after exposure to air for 10,20 and 30 hours is randomization.

Replication refers to the number of times the same experiment is carried out. It enhances the reliability of the result of an experiment.

Testing each sample twice is replication.

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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:

-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,

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Answer:

As both these angles form a linear pair, they together will form 180°

So,

(2x + 45)° + x = 180°

=> 2x + 45 + x = 180°

If my answer helped, kindly mark me as the brainliest!

Thank You!!

Answer:

(3,1)   (3,-1)   (-3,1)   (-3,-1)

Step-by-step explanation:

Answer:

m=5 or the slope is 5

Step-by-step explanation:

This is because you use the expression y2-y1/x2-x1

We are required to find the unit rate, that is, miles per hour

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Answer:

just add up the 2 numbers pretty simple

Step-by-step explanation:

53.2 plus 29.4

Answer: 82.6 lb

Step-by-step explanation:

Since the restaurant is buying the pounds given from the farmer, add the pounds together.

Add

53.2 + 29.4 = 82.6

Hence, the restaurant bought 82.6 pounds of vegetables.

Answer:

  see attached

Step-by-step explanation:

The usual methods of long division use place value. Each quotient digit is aligned over the appropriate dividend digit to give it the proper place value.

Answer:

3.2 x 10^5

Step-by-step explanation:

Answer:

3.2 x 10^5​

Step-by-step explanation:

it had a bigger exponent.

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

Step-by-step explanation:

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:

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

Answer:

ok bet my niqgqa

Step-by-step explanation:

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:

12 1/3

Step-by-step explanation:

Answer:

12 1/3

Step-by-step explanation:

1. Divide the numerator by the denominator.

Divide 37 by 3, which equals 12 with a remainder of 1.

37 ÷ 3 = 12 r1

2. Find the whole number.

The whole number is the number of times the denominator divides into the numerator.

3 (the denominator) divides into 37 (the numerator) 12 times, so 12 is the whole number.

Make the remainder the new numerator.

Because the remainder (the leftover value) of dividing 37 by 3 is 12, 1 is the new numerator. The denominator is still 3. So, the mixed fraction is:

12 1/3

Hope it helps...

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:

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