My question is im trying to solve for y in this problem 20x - 12y = -108​

Answer:

136cm²

Step-by-step explanation:

explanation in the screenshot

The formula of mean deviation = [Σ |X – µ|]/N

What is mean deviation?

Mean deviation defined as a statistical measure that is used to calculate the average deviation from the mean value of the given data set.

The formula of mean deviation is  [Σ |X – µ|]/N

Here,

Σ represents the addition of values

X represents each value in the data set

µ represents the mean of the data set

N represents the number of data values.

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Answer:

y = 5(1.8)^x

Step-by-step explanation:

the formula for an exponential equation is y = a(b)^x

the a in this case is the starting number which is 5000

y = 5000(b)^x

the b is the percentage in decimal form

0.8 BUT it is an increase so we add 1

1.8

y = 5000(1.8)^x

because the graph is in thousands we can make 5000 into 5

Answer:It will be your last option

Step-by-step explanation:

We can simplify the expression by combining like terms: 4AA - CTBTCTBT. Finally, the simplified expression is 4AA - CTBTCTBT.

To simplify the given expression (2AT - BC)T 2A + CTBT, let's break it down step by step:

Step 1: Transpose (2AT - BC)

The first step is to transpose the matrix 2AT - BC. Transposing a matrix means flipping it over its main diagonal. In this case, we have:

(2AT - BC)T = (2AT)T - (BC)T

The transpose of a scalar multiple of a matrix is the same as the scalar multiple of the transpose of the matrix, so we have:

(2AT)T = 2A and (BC)T = CTBT

Substituting these values back into the expression, we get:

(2AT - BC)T = 2A - CTBT

Step 2: Multiply by 2A + CTBT

Next, we multiply the result from step 1 by 2A + CTBT:

(2A - CTBT)(2A + CTBT)

To simplify this expression, we can use the distributive property of matrix multiplication. When multiplying two matrices, we distribute each term of the first matrix to every term of the second matrix. Applying this property, we get:

(2A)(2A) + (2A)(CTBT) - (CTBT)(2A) - (CTBT)(CTBT)

Note that the order of multiplication matters in matrix multiplication, so we need to be careful with the order of terms.

Simplifying further, we have:

4AA + 2ACTBT - 2ACTBT - CTBTCTBT

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The correct Python line that outputs the probability Plx > 7 for a Normal distribution with mean 5 and standard deviation 2 is option (b).Solution:For a Normal distribution with mean 5 and standard deviation 2, the probability that a random variable x will take a value greater than 7 is given by the survival function.sf is the abbreviation for the survival function, which returns the probability that a random variable will take on a value greater than or equal to the given value. The syntax for scipy.stats.norm.sf is as follows:`scipy.stats.norm.sf(x, loc=0, scale=1)`where loc is the mean of the distribution and scale is the standard deviation of the distribution.The line of Python code that returns the probability Plx> 7 for a Normal distribution with mean 5 and standard deviation 2 is:import scipy.stats as stprint(st.norm.sf(7, 5, 2))Thus, option (b) is the correct answer.

The correct Python line to output the probability P(X > 7) for a Normal distribution with mean 5 and standard deviation 2 is b) import scipy.stats as st print(st.norm.sf(7, 5, 2))

The function st.norm.sf(x, loc, scale) computes the survival function, which is the probability that a random variable from a Normal distribution with mean loc and standard deviation scale is greater than x.

In this case, we want to find P(X > 7) for a Normal distribution with mean 5 and standard deviation 2.Therefore, we use st.norm.sf(7, 5, 2) to output the desired probability.

The output should be approximately 0.1587, which represents the area to the right of x = 7 under the Normal curve with mean 5 and standard deviation 2.

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The solution to the linear function M(x) = 180 is of x = -5.

The linear function equation is the slope-intercept form. Thus, it is expressed as f(x) = mx + b where m is the slope and b is the y-intercept of the line.

In this problem, the function is defined as follows:

M(x) = 120 - 12x.

M(x) represents the balance remaining on the gift card after x movie tickets priced at $12 are purchased.

The domain of the situation is given as follows:

x ≥ 0. {discrete}

As the number of tickets cannot assume negative neither decimal values.

The equation is:

M(x) = 180.

The solution is calculated as:

120 - 12x = 180

12x = -60

x = -60/12

x = -5.

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Answer:

98.5 cm2

Step-by-step explanation:

The output of the word STAR is RSZQ

The encryption rule is given as:

Change a letter to the previous letter

This means that:

S -> R

T -> S

A -> Z

R -> Q

So, we have:

STAR -> RSZQ

Hence, the output of the word STAR is RSZQ

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Answer:

1, 2 and 3  (I, II and III)

Step-by-step explanation:

Since the slope is positive (3) in the equation y = 3x + 1, it means that the graph has a positive slope, meaning the line slopes up from left to right.

The y intercept is 1

the x intercept is:  

0 = 3x + 1

x = 1/3

Therefore, the graph of y = 3x + 1 lies in quadrants I, II and III.  Graph the equation to prove this.  

Step-by-step explanation:

here is the answer to your question

Answer:

Step-by-step explanation:

I would start from the beginning and find the slope myself, just so I know what's going on (as opposed to being dropped in the middle of the problem). The slope formula is:

\(m=\frac{y_2-y_1}{x_2-x_1}\) and for us:

\(m=\frac{5-3}{4-3}=2\) so the slope is indeed 2. Now we need to write the equation in slope-intercept form. I find it easier to first write the equation in point-slope form and then solve it for y. Point-slope form is

\(y-y_1=m(x-x_1)\) where m is the slope (2) and x1 and y 1 are from one of the coordinates (whichever one you want; as long as you do the math correctly, you will NOT get an incorrect answer. In other words, you can't pick the "wrong" point to use to write the equation.) I'm going to use (3, 3):

y - 3 = 2(x - 3) and

y - 3 = 2x - 6 and

y = 2x - 6 + 3 so

y = 2x - 3 and that's your equation. Of course, you will enter a (-3) in that box with the ? in it.

There is a significant relationship between the number of cats she owns and the number of times an old widow was married (r = +0.91, p < 0.05, r² = 0.82).

Given, the Pearson correlation coefficient of +0.91,

There appears to be a strong +ve correlation between the number of cats she owns and the number of times an old widow was married.

It suggests that the more times a widow was married,the more cats she tends to own.

Approximately 82% of the variance in the number of cats owned can be explained by the number of times a widow was married is indicated by the coefficient of determination (r²).

Hence, we can say that there is a significant relationship between the number of cats she owns and the number of times an old widow was married (r = +0.91, p < 0.05, r² = 0.82).

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The number of ways cans a president, vice president, and secretary be chosen from a committee of 9 people, assuming one person cannot hold more than one position, is 84.

A combination is a choice of items from a group of different items, where the order of the choices is irrelevant.

Given:

A president, vice president, and secretary be chosen from a committee of 9 people,

Calculate the number of ways by using the combination as shown below,

\(N = 9C_3\)

Here, N is the number of ways,

N = 9! / [3!(9-3)!]

N = 9! / [3!6!]

N = 84

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Answer:

y=1/2x+2

Step-by-step explanation:

to calculate calculate mean and standard deviation after transforming a random variable combining random variables, use the formulae for both the expected and standard deviation of such a linear combination with random variables.

Data dispersion in regard to the mean is quantified by a standard deviation, or "σ". Data are said to be more closely grouped around the mean when the standard deviation is low and more dispersed when the standard deviation is high.

Because it makes measures easier to comprehend when the data is spread, standard deviation is significant. The data's standard deviation will increase as the data's distribution becomes more widely scattered. The deviation of each observed value from the mean is measured using this metric. The majority of data in any distribution will fall within a 2 standard deviation range of the mean.

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Answer:

b = 72

Step-by-step explanation:

7/12b - 19 = 23

7/12b = 42

b = 72

Let's Check

7/12(72) - 19 = 23

42 - 19 = 23

23 = 23

So, b = 72 is the correct answer.

To produce at a point lying inside the production possibilities curve would require economic growth.

The production possibilities curve can be described as a graph  that help to display the  different combinations of output  which can be gotten from  given current resources and technology.

In this case, To produce at a point lying inside the production possibilities curve would require economic growth.

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System of equations can be used to find each digit is option A.

An equation is a mathematical statement that shows that two expressions are equal to each other. It consists of two sides, the left-hand side (LHS) and the right-hand side (RHS), separated by an equal sign (=). The LHS and RHS can contain numbers, variables, and mathematical operations such as addition, subtraction, multiplication, division, exponents, and roots.

Let's represent the hundreds, tens, and units digits as h, t, and u, respectively. Then we can use the given information to set up a system of equations:

A three-digit number has a digit sum of 13:

h + t + u = 13

One more than the hundreds digit (h) is the tens digit (t):

t = h + 1

The digit in the units, u, is 3 greater than the total of the digits in the tens and hundreds:

u = t + h + 3

Therefore, the correct system of equations is:

h + t + u = 13

t = h + 1

u = t + h + 3

Therefore, the answer is (A).

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The final coordinates of the figure are: A" (30, 6), B" (46, 6) and C" (2x + 4, 2y + 6).

To complete the transformations and find the final coordinates of the figure, we'll apply two transformations: a translation and a dilation.

Translation: Given the vector <2,3>, we will translate each point by adding the corresponding components of the vector to their initial coordinates.

Let's assume the initial coordinates of points A, B, and C are:

A (13, 0)

B (21, 0)

C (x, y)

After the translation, the new coordinates will be:

A' (13 + 2, 0 + 3) = (15, 3)

B' (21 + 2, 0 + 3) = (23, 3)

C' (x + 2, y + 3) = (x + 2, y + 3)

Dilation: Given the scale factor K = 2, we will dilate each point by multiplying their coordinates by the scale factor.

After the dilation, the new coordinates will be:

A" (15 * 2, 3 * 2) = (30, 6)

B" (23 * 2, 3 * 2) = (46, 6)

C" ((x + 2) * 2, (y + 3) * 2) = (2x + 4, 2y + 6)

Please note that since the initial coordinates of point C were not provided, we cannot determine its final coordinates precisely without additional information. The coordinates of point C in the final figure depend on the values of x and y.

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Answer:

B. -1

Step-by-step explanation:

STEP 1: Simplify 3x+2(x−9).

\(5x-18=8x+x-14\)

STEP 2: Add 8x and x.

\(5x-18=9x=-14\)

STEP 3: Move all terms containing x to the left side of the equation.

\(-4x-18=-14\)

STEP 3: Move all terms not containing x to the right side of the equation.

\(-4x=4\)

STEP 4: Divide each term by −4 and simplify.

\(x=-1\)

Josh collected 60 stickers, Ann collected 67 stickers and Claire collected 30 stickers.

Ann, Claire and Josh collect stickers. One week, Ann collects 7 more stickers than Josh.

let use variables to represent the amount of stickers they collected.

Therefore, Ann collects 7 more stickers than Josh. Josh collects twice as many stickers as Claire

Josh stickers = x

Ann stickers = 7 + x

Claire stickers = 1 / 2 x

Total stickers collected = 157

Therefore,

x + 7 + x + 1 / 2 x  = 157

x + x + 1 / 2 x = 157 - 7

2.5x = 150

divide both sides by 2.5

x = 150 / 2.5

x = 60

Therefore, Josh collected 60 stickers, Ann collected 67 stickers and Claire collected 30 stickers.

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Cost of 15 liters of paint is, 630 Rs.

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

We have to given that;

Five liters of paint cost = 210 Rs.

Hence, We get;

Cost of 1 liters of paint = 210/5

                                   = 42 Rs.

So, Cost of 15 liters of paint is,

⇒ 15 × 42

⇒ 630 Rs.

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Answer:

\(5x(x-8)\)

Step-by-step explanation:

Factor \(5x\) out of \(5x^{2} -40x\)

The winner received 570 votes.

Let the winner candidate be c1

Let the  second-place candidate be c2

Let the  third-place candidate be c3

\(c2=c1-155\\\).........equation 1

\(c2=c3+200\\\)

\(c3=c2-200 \\\)

\(c3=c1-155-200\\\).........by equation 1

\(c3=c1-355\)........equation 2

Now we know,

\(c1+c2+c3=1200\)

\(c1+(c1-155)+(c1-355)=1200\) .....by equations 1 and 2

\(3c1-510=1200\)

\(3c1=1200+510\\3c1=170\\c1=570\)

Hence, The winner received 570 votes.

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Answer:

See below

Step-by-step explanation:

Start out -20     and change 0° ?

then there is zero slope as this would be a horizontal line.

The value of the coordinate x in the point P(x, 3) s -2

From the question, we have the following coordinate points

Point P = (x, 3)

Point Q = (3, 5)

Point R = (-4, -2)

The point P is equidistant from the points Q and R

This means that

PQ = PR

These lengths can be calculated using the following distance formula

distance = √[(x₂ - x₁)² + (y₂ - y₁)²]

So, we have

PQ = √[(x - 3)² + (3 - 5)²]

PR = √[(x + 4)² + (3 + 2)²]

Recall that PQ = PR

So, we have

√[(x - 3)² + (3 - 5)²] = √[(x + 4)² + (3 + 2)²]

Square both sides

(x - 3)² + (3 - 5)² = (x + 4)² + (3 + 2)²

So, we have

(x - 3)² + 4 = (x + 4)² + 25

Open the brackets

x² - 6x + 9 + 4 = x² + 8x + 16 + 25

Evaluate the like terms

8x + 6x = 9 + 4 - 16- 25

Evaluate the like terms

14x = -28

This gives

x = -2

Hence, the value of x is -2

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Answer:

Step-by-step explanation:

Answer:

x=8

Step-by-step explanation:

the line is 180 degrees,

so 180-116=64

and 64=8x

x=8

Answer:

The 3rd one - I don't seem too sure with the answer, you know the 1st question's 2nd part, right?

ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ

# ꧁❣ RainbowSalt2²2² ࿐

Rashid spent a total of 1 hour and 30 minutes on homework for these three subjects.

If Rashid spent 30 minutes on each piece of homework for three subjects, we can calculate the total time he spent by multiplying the time spent per subject (30 minutes) by the number of subjects (3).

30 minutes * 3 = 90 minutes.

To convert this into hours and minutes, we divide 90 minutes by 60 since there are 60 minutes in an hour.

90 minutes ÷ 60 = 1 hour and 30 minutes.

Therefore, Rashid spent a total of 1 hour and 30 minutes on homework for these three subjects.

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