Solve the system withelimination.1-2x + y = 813x + y = -2([?],[?]

Answer:

15

Step-by-step explanation:

wow(-1) means w(w(-1))

so we can find out what w(-1) is

3(-1)^2+3(-1)-3=3-3-3

which is -3

then we can find w(-3)

3(-3)^2+3(-3)-3

which is 15

When Fiona rolled Cube #2, she got a number -2 as she got 2 while rolling Cube #1 and the sum of the value on the cubes was 0.

As we know Cube #1 has integers 1, 2, 3, 4, 5, 6 on its faces and Cube #2 has -1, -2, -3, -4, -5, -6 on its faces.

It is also given that Fiona got 2 when she rolled cube #1 and the value of the sum on both the cubes is 0.

So it is clear that on Cube #2, the number must be -2 as in that case only, the sum of the values will be 0.

To prove

2 + (-1) = 1

2 + (-2) = 0

2 + (-3) = -1

Hence, the number she got on Cube #2 is -2.

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SOLUTION

The question can be written in equation form as:

Use the formula for the area of a circle:

First, we need to find the radius r. Since the radius is half the diameter, then:

Substitute the value for r in the formula for the area of the circle:

Therefore, the area of a circle of diameter 10.5 in is approximately 86.6 squared inches.

Here, the expression is 26/w=5/6.

Therefore,

So, the value of w is 31.2

Option C is the answer

Solution

Given the circle with 25 yard diameter

Circumference of a circle = 2πr

Circumference = πd

Therefore the correct answer = 25pi

Hence the correct answer is Option A

Given:

The ratio is 9:6.

The equivalent ratio is,

Answer: the ratio equivalent to 9:6 is 3:2.

Answer:

2 dogs

Step-by-step explanation:

10-4+3-7

6-4

2

Answer: 2 dogs

Step-by-step explanation:

QUESTION WHO KILLS AND EATS DOGS?????

Answer: 374/40 or 9.35 or 9 and 7/20

Step-by-step explanation: see photo for explanation

nine hundred forty-two ten-thousandths:

1. Write the first part as a number: nine hundred forty-two

nine hundred: 900

forty-two: 42

900+42= 942

2. Identify the position of number above in the decimal knowing that ten-thousandths ends in 4 disgits after the decimal point (the last digit of number above needs to be in the ten-thousandths position):

SOLUTION:

Case: Outliers in a data set

Given: A set of numbers:

117, 211, 186, 176, 372, 7, 51, 229, 222, 83, 129, 142, 197, 102.

Required:

A) Identify the outliers

B) Mean with outliers

C) Median with outliers

D) Mode with outliers

E) Mean without outliers

F) Median without outliers

G) Mode without outliers

Final Answers

A) The outliers

First we arrange the data:

7, 51, 83, 102, 117, 129, 142, 176, 186, 197, 211, 222, 229, 372

Now we select the outliers

Because of the space in the data, the suspected outliers are:

7

because it is far from the central values

B)

The mean with outliers

C)

Median with outlier

Median = (142+176)/2

Median= 159

D) Mode with outlier

This data has no mode

E) Mean without outlier

51, 83,102, 117, 129, 142, 176, 186, 197, 211, 222, 229, 372

F) Median without outlier

Median = 176

G) Mode without outlier

The data has no mode

First, let's express the proportion as an equation, where the blank space is the variable x.

To find the value of x, we multiply both sides by 35.

Utilizing a calculator First, STAT > EDIT, then enter all the x values in L1 and the probability for each x value in L2 to determine the mean and standard deviation of a probability distribution.

Therefore,

An answer to the question is:

A) Yes

B) n = 39 = / n = 11 / 39 = 1.7614 P(48 49) = P[(48-4...

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We have that the general formula for the density given the volume and the mass is:

in this case, the densities for the can of soup and the can of tuna are:

the difference between these two densities is:

therefore, there is 0.0179 less density of the soup than the tuna

paid price = 24,998

it is the amount that is 1815 less than the sticker price,

so the sticker price or price of the car is x

so x = 24,998 + 1815

x =26,813

so the price of car is x = 26,813.

There are 10 digits from 0 to 9.

First digit 10 ways

Second digit 10 ways

Third digit 10 ways

Fourth digit 10 ways

Hence the total outcomes =10000

Selecting the correct access code on the first try given favorable outcomes =1.

Hence the probability of randomly selecting the correct access code on the first try is 0.0001.

The probability of not selecting the correct access code on the first try=1-The probability of selecting the correct access code on the first try

The probability of not selecting the correct access code on the first try=1-0.0001

Hence the probability of not selecting the correct access code on the first try=0.9999.

Based om the cost of the continuous belt conveyor kiln and the monthly payments, as well as the APR of the loan, the term this loan will be paid is 120 months or 10 years.

When given the cost of a loan, the APR, and the monthly payments, you can find out the term of the loan by using the NPER function on a spreadsheet.

The Rate would be:

= 6.3% / 12 months in a year

= 0.525%

The Pmt is the payment of $765.22. This amount should be in negatives.

The Present Value or Pv should be the loan amount of $68,000.

The term on the loan would then be 120 months which is 10 years.

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Answer:

Step-by-step explanation:

This is an equation! Solutions: x=1.

Graphical form: Equation 3%2Ax-x%2B2=4 was fully solved.

Text form: 3*x-x+2=4 simplifies to 0=0

Cartoon (animation) form: simplify_cartoon%28+3%2Ax-x%2B2=4+%29

For tutors: simplify_cartoon( 3*x-x+2=4 )

If you have a website, here's a link to this solution.

EXPLANATION

Since we have the system of equations:

(1) x - y = 0

(2) x + y = -4

Isolating x in (1):

x = y

Plugging in x=y into (2):

y + y = -4

Adding like terms:

2y = -4

Dividing both sides by 2:

y = -4/2

Simplifying:

y = -2

Plugging in y=-2 into (1):

x - (-2) = 0

Removing the parentheses:

x + 2 = 0

Subtracting -2 to both sides:

x = -2

The solution of the system of equations is (-2, -2)

Representing the graph:

Answer:

Inverse should be:

f^(-1)(x) = -2x + 5

Step-by-step explanation:

We have the following:

solving for m:

STEP - BY - STEP EXPLANATION

What to find?

• The system of equation of the argumented matrix.

• The resultant after the given row operations.

Given:

The system of equation is:

7x - 7y + z = -5

3x - 3y + 8z = -5

-6x + y + 3z = 7

Hence, the correct option is D

The following row operations are to be performed;

The first row operation implies that you will multiply row 2 by -2 and then add to row. The resultant gives a new row 1.

This means that the elements in row 1 becomes:

Row 1 : 1 -1 - 15 | 5

Row 2: 3 -3 8 | -5

As for row 3, we will multiply row 2 by 2 and then add to row 3 to get a new row 3.

That is;

Row 3 : 0 -5 19 | -3

ANSWER

Option D

Part B

1 -1 - 15 | 5

3 -3 8 | -5

0 -5 19 | -3

Answer:

d.

Step-by-step explanation:

the slope is the factor of x.

a perpendicular slope turns the original slope upside-down and flips the sign.

the original slope is -3/7.

the perpendicular slope is then 7/3.

the only answer option with the correct slope is d.

so, d. must be correct.

let's check that (-2, 2) is on this line :

2 = 7/3 × -2 + 20/3 = -14/3 + 20/3 = 6/3 = 2

2 = 2

correct.

so yes, the point (-2, 2) is on this line, and d. is indeed correct.

SOLUTION

We want to solve for x in the equation

First we expand the brackets in both sides of the equation, this becomes

Note that the minus sign multiplies the items in the brackets too

Now, we collect like terms we have

Hence x = -3

Answer:

Given:

Simplify:

Expand:

Apply linearity:

Apply power rule and the standard integral ln(x)

Now, applying the Fundamental Theorem of Calculus Part 2

Or approximately

Answer:

D is not a function--an x-value cannot correspond to more than one y-value.

Expression of the integral [tex]\int\limits^3_0 {(x^{3}-6x) } \, dx[/tex] as the limit of a Riemann sum without any evaluation will be

Lim(n → ∞) ∑(n = 1 → ∞) [{(27i³/n³) - (18i/n)} * (3i/n)]

As per the question statement, we are provided with an integral [tex]\int\limits^3_0 {(x^{3}-6x) } \, dx[/tex] ,

And we are required to determine the expression of the above mentioned integral as the limit of a Riemann sum without any evaluation.

To start with, we need to know the formula [Δx = {(b - a)/n}]

And here, from our given integral [tex]\int\limits^3_0 {(x^{3}-6x) } \, dx[/tex], we get that, (a = 0) and

(b = 3). Therefore substituting the values of "a" and "b" in the formula to calculate Δx, we get,

[Δx = {(3 - 0)/n} = (3/n)]

Also, [(x[tex]_{i}[/tex]) = {a + (Δx)i} = {0 + (3/n)i) = (3i/n)],

Given, [ρ(x) = (x³ - 6x)], and thus, [ρ(x[tex]_{i}[/tex]) = ρ(3i/n)]

Or, [ρ(x[tex]_{i}[/tex]) = {(3i/n)³ - 6(3i/n)}]

Or, [ρ(x[tex]_{i}[/tex]) = {(27i³/n³) - (18i/n)}]

Then, Lim(n → ∞) ∑(n = 1 → ∞) ρ(x[tex]_{i}[/tex])Δx

= Lim(n → ∞) ∑(n = 1 → ∞) [{(27i³/n³) - (18i/n)} * (3i/n)]

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f(x) = -2

the answer is the second option

The horizontal line at y = -2 which is parallel to x-axis

The function operation ( f - g )( x ) in the functions f(x) = x² + 1 and g(x) = 5 - x is x² + x - 4.

A function is simply a relationship that maps one input to one output. Each x-value can only have one y-value.

Given the data in the question;

To find ( f - g )( x ), replace the function designators in ( f - g ) with the actual functions.

( f - g )( x ) = f( x ) - g( x )

( f - g )( x ) = ( x² + 1 ) - ( 5 - x )

Remove the parenthesis using distributive property

( f - g )( x ) = ( x² + 1 ) - ( 5 - x )

( f - g )( x ) = x² + 1 - 5 + x

Collect and add like terms

( f - g )( x ) = x² + x + 1 - 5

( f - g )( x ) = x² + x - 4

Therefore, the function operation ( f - g )( x ) is x² + x - 4.

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The required function would be (f – g)(x) = x² + x - 4.

A mathematical expression that defines the connection between two variables is considered a function.

The given functions following as

f(x) = x² + 1 and g(x) = 5 - x

We have to determine the function (f – g)(x).

(f – g)(x)  = f(x) - g(x)

Substitute the values of functions f(x) = x² + 1 and g(x) = 5 - x in the function (f - g).

(f – g)(x) = (x² + 1) - (5 - x)

Open the parenthesis and apply the arithmetic operation,

(f – g)(x)  = x² + 1 - 5 + x

Rearrange the terms likewise and combine them,

(f – g)(x) = x² + x + 1 - 5

Apply the subtraction operation to get

(f – g)(x) = x² + x - 4

Therefore, the required function would be (f – g)(x) = x² + x - 4.

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