if x -12x + 36= 0 what is the value of x

Answer: 4

Step-by-step explanation: Brainliest plz!!

Answer: The domain is all of the possible values for the input (x) axis.  The range is the possible values for the output (y).

Step-by-step explanation: You will have to subtract the least value from the greatest value for both your x and y.

The system of equations is Option D.

12x + 15y = 9

-12x - 18y = -6

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the first equation be A , 4x + 5y = 3

Let the second equation be B , 2x + 3y = 1

Now ,

The equations can be solved by

4x + 5y = 3   be equation (1)

2x + 3y = 1   be equation (2)

Multiply equation (1) by 3 , we get

12x + 15y = 9   be equation (3)

Multiply equation (2) by -6 , we get

-12x - 18y = -6   be equation (4)

So , the system of equations are

A , 12x + 15y = 9

B , -12x - 18y = -6

Hence , the system of equations are 12x + 15y = 9  and  - 12x - 18y = -6

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Answer:

The absolute change would be 3 percentage points.

The relative change would be 100%

Step-by-step explanation:

Answer:

x-2 =0

x=2

now

putting the x value in p

we have,

p(2) = x2 + 2x +k

= 2×2 +2×2+k

= 4+4+k

= 8+k

so,

Either

8+k =0

k= - 8

Answer:

Step-by-step explanation:

Mean μ = 36

standard deviation σ = 10

n = 16

standard deviation of the group σ₁ = σ / √n

σ₁ = 10/ √16

= 10 / 4 = 2.5

σ₁  = 2.5

P ( x > 35 ) = 1 - P ( x < 35 )

P ( x < 35 ) = P( z < (35 - 36) / 2.5 ) = P( z < (35 - 36) / 2.5 )

= P( z < 0.4  )

= .3446

P ( x > 35 ) = 1 - .3446

= .6554 .

Answer:

4.23 rounded to the nearest whole number is 4.

Answer:

4.23 2.115 per item

Step-by-step explanation:

Answer:

0.3125

Step-by-step explanation:

From the full question in your book, the probability can be computed as:

[tex]P(X+Y=6) = P \{X=1,Y=5\} \cup \{X=2,Y=4\} \cup \{X=3,Y=3\} \cup \{X=4,Y=2\} \cup \{X=5,Y=1\}[/tex]

[tex]= P(X=1,Y=5) + P(X=2,Y=4)+P(X=3,Y=3)+P(X=4,Y=2)+P(X=5,Y=1)[/tex]

since all events are enclosed in brackets, they are mutually exclusives.

Then:

[tex]= P(X=1)P(Y=5)+P(X=2)P(Y=4)+P(X=3)P(Y=3)+P(X=4)P(Y=2)+P(X=5)P(Y=1)[/tex]

as X and Y are independent;  

= [tex](0.25\times0.25 + 0.25\times0.25 + 0.25\times0.25+0.25\times0.25 + 0.25\times0.25)[/tex]

= 0.3125

Therefore;

P(X+Y= 6) = 0.3125

Answer:

100 GROUPS OF TEN

Step-by-step explanation:

THERE IS 1000 ML IN 1L

Answer:

The mean and variance of X are 2.82 and 0.1692  respectively

Step-by-step explanation:

The binomial distribution is a discrete probability distribution that tells the percentage in which a result is likely to be obtained between two possibilities when performing n number of tests. In other words, a binomial distribution is a discrete probability distribution that describes the number of successes when conducting n independent experiments on a random variable.

In a binomial distribution, the mean indicates the mean value of a random phenomenon. It is calculated by:

μ=n*p

Where:

This case is a binomial distribution, where n = 3 and p = 0.94. Then:

μ=3*0.94

μ=2.82

The mean of X is 2.82.

Variance is a measure of dispersion that represents the variability of a data series with respect to its mean. It is calculated by:

Var[X]= n*p*q

Where:

Remembering that the random variable X expresses the number of successes obtained when performing "n" independent Bernouilli tests or tests with probability "p" of success and "(1-p)" of failure, then q = 1-p.

So:

Var[X]= n*p*(1-p)

In this case:

Var[X]=3*0.94*(1-0.94)

Var[X]=3*0.94*0.06

Var[X]=0.1692

The variance of X is 0.1692

Answer:

if i am hungry then i will get a snack

Step-by-step explanation:

Complete Question

A random sample of 114 observations produced a sample mean of 30. Find the critical and observed values of z for the following test of hypothesis using α=0.01. The population standard deviation is known to be 5 and the population distribution is normal.

[tex]H_o: \mu =28[/tex]  versus H1: μ>28.

Round your answers to two decimal places.

[tex]z_{critical} =[/tex]

Answer:

 [tex]z_{critical} = 2.33[/tex]

The observed value  is   [tex] z = 4.27  [/tex]

Step-by-step explanation:

From the question we are told that

   The sample size is  n  =  114

   The sample mean  is  [tex]\= x   =  30[/tex]

   The  significance level is  [tex]\alpha = 0.01[/tex]

   The population standard deviation is  [tex]\sigma = 5[/tex]

The null hypothesis is  [tex]H_o: \mu =28[/tex]  

 The alternative hypothesis is   H1: μ>28.

 Generally the test statistics (observed value ) is mathematically represented as

      [tex] z = \frac{ \= x - \mu }{ \frac{\sigma }{\sqrt{n} } } [/tex]

=>     [tex] z = \frac{ 30- 28 }{ \frac{5}{\sqrt{114} } }  [/tex]

=>     [tex] z = 4.27  [/tex]

From the normal distribution table the critical value  of  [tex]\alpha = 0.01[/tex] is  

     [tex]z_{critical} = 2.33[/tex]

Answer:

Small dog =18

Big dog=50

Step-by-step explanation:

68-50=18

Answer:

75+68

Step-by-step explanation:

Answer:

you could stay there 6 nights

Step-by-step explanation:

to solve this you would do 825$ ÷ by the amout which is 134$ and then you get 6.15671641791 then you would round it which give you 6 nights.

it should be 7 hours because the cars distance is 660

Answer:

(f + g)(x) = 3x + 6

Step-by-step explanation:

Brainliest?

Answer:

Nine and one third or 28/3

Have a nice day!

Answer:

22

-10

-16

-21

-32

Explanation:

On a number line, negative numbers are on the left and positive numbers are on the right. So, typically, the positive numbers would be less than the negative numbers.

Hope this Helps!

Answer:

The x intercept is -4

And y intercept is -4/3

Answer:

Step-by-step explanation:

In this problem we are required to provide the expression for the two scenarios highlighted

The first scenario is

"Each pound of trout costs $30, and the company charges a $2 fee for

shipping the order"

The expression for the above scenario is given as

30x + 2, 0 < x < 10

The second scenario is

"if Karen orders 10 or more pounds, the trout costs only $24 per pound, but the shipping fee is $6."

The expression for the second scenario is

24x + 6, x > 10

Answer:

I think the first answer is 8 and I dont know the second answer

Answer:

-38 + (-30) = -68

-28 + 45 = 17

Answer:

Sorry, Don't know the answer.

Answer:

4.5% ≈ 5%

Step-by-step explanation:

Given Data :

number of cards left in the deck = 12

number of spades left = 3

Patricia needs 2 spades

Calculate the probability that the two cards dealt ( without replacement ) will both be spades

1st case: ( first card is a spade )

number of cards left in the deck = 12

number of spades left = 3

P( first card dealt is spade ) = 3 / 12 = 1/4

2nd case ( second card is a spade )

number of cards left = 11

number of spades left = 2

p( second card dealt is spade ) = 2/11

Hence the probability that the two cards dealt ( without replacement ) will both be spades

= 1st case * 2nd case

= 1/4 * 2/11

= 2 / 44 =  1 / 22 =  0.045  = 4.5% ≈ 5%

Answer:

5%

Step-by-step explanation:

Got it right on the test.

Answer:

34.57 I'm pretty sure yayyy

Answer:

34.567 rounded to tenths is 34.6

Step-by-step explanation:

because if you look at the number to the right it five or more so you raise the score and the five turns to a 6 so 34.567 = 34.6

Answer: Use the graph of the line to answer the questions.

What is an equation of the line in point-slope form?

✔ y + 1 = (1/3)(x + 2)

How can the point-slope form be written in function notation?

✔ f(x) = (1/3)x – (1

First one is 436: 75*5+61=436

Second one is 48x^2-12: Just substitute 4x for x. 3*16x^2-12=48x^2-12

Answer:

20

21.75

27.85

29.5

Step-by-step explanation:

Arranging the values in ascending order we get

16 21 24 24 27 28 30 35

n = Number of values = 8

Rank is given by

[tex]\dfrac{\text{Percentile}}{100}\times (n+1)[/tex]

[tex]=\dfrac{20}{100}(8+1)=1.8[/tex]

Taking the fraction of the rank i.e., 0.8 and work out the weighted mean

[tex]0.8\times (21-16)+16=20[/tex]

The 20th percentile is 20

[tex]\dfrac{25}{100}(8+1)=2.25[/tex]

[tex]0.25(24-21)+21=21.75[/tex]

The 25th percentile is 21.75

[tex]\dfrac{65}{100}(8+1)=5.85[/tex]

[tex]0.85(28-27)+27=27.85[/tex]

The 65th percentile is 27.85

[tex]\dfrac{75}{100}(8+1)=6.75[/tex]

[tex]0.75(30-28)+28=29.5[/tex]

The 75th percentile is 29.5

Answer:

120cm

Step-by-step explanation:

The surface area of the square pyramid is 127.4 square centimeters

A three dimensional shape can be defined as a solid figure or an object or shape that has three dimensions—length, width, and height.

The given figure is a square pyramid

The formula to find surface area = a²+2a√a²/4+h²

a is the base edge length and h is the height

a is 6 cm and h is 7 cm

Surface area =  6²+2(6)√6²/4+7²

=36+12√36/4+49

=127.4 square centimeters

Hence, the surface area of the square pyramid is 127.4 square centimeters

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