Solve the system by back substitution.
-2x - 4y - z - 3w = -5
y + 6z + 2w = 8
4z + 4w = 8
-4w = -12
Solution should be set like {( _ , _ , _ , _ )}

The unit price of the pairs of padded will be $1.23 per pair. The error is the price of the pairs of pads should have been divided by 12.

When the relevant factors and natural laws of a mathematical model are given values, the outcome of the calculation it describes is the expression's outcome.

For $44.28 a contractor buys 3 dozen pairs of cushioned work gloves.

The unit price of the pairs of padded will be given as,

⇒ $44.28 / (12 x 3)

⇒ $1.23 per pair

The unit price of the pairs of padded will be $1.23 per pair.

The error is the price of the pairs of pads should have been divided by 12.

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The correct answer choice as required in the task content is; Choice B; Change 1,000 to Scientific notation and then multiply by (2.3 x 10^6).

To find which number is one thousand times larger than 2.3 x 10², Change 1,000 to Scientific notation and then multiply by (2.3 x 10²).

This is a method of writing or of displaying real numbers as a decimal number between 1 and 10 followed by an integer power of 10.

which number is one thousand times larger than 2.3 x 10²

1000 to scientific notation

= 10³

2.3 x 10² × 1000

= 2.3 x 10² × 10³

= 2.3 × 10^5

Furthermore, scientific notation helps us to express numbers in decimal number between 1 and 10 followed by an integer power of 10. It also help us to represent numbers in this pattern.

Therefore, to find which number is one thousand times larger than 2.3 x 10², Change 1,000 to Scientific notation and then multiply by (2.3 x 10²).

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Answer:n=16-m

Step-by-step explanation:

n+m=16

Subtract m from both sides.

n=16−m

Answer: 2+[tex]\frac{6x-2}{x(x-3)}[/tex] ==> x[tex]\neq[/tex]0, x[tex]\neq[/tex]3

Step-by-step explanation:

f(x)=2x^2-2

g(x)=x^2-3x

(f/g)(x)=

[tex]\frac{2x^2-2}{x^2-3x}[/tex]=

[tex]\frac{2x^2-6x+6x-2}{x^2-3x}[/tex]=

[tex]\frac{2x^2-6x+6x-2}{x^2-3x}[/tex]=

2+[tex]\frac{6x-2}{x^2-3x}[/tex]=2+[tex]\frac{6x-2}{x(x-3)}[/tex] ==> x[tex]\neq[/tex]0, x[tex]\neq[/tex]3

Based on the gross pay to Edie of $927.88, the amount contributed by Edie Social Security was $57.53 and the amount to Medicare was $13.45

The current Social Security tax rate is 6.2% which means that to find the Social Security tax that Edie will contribute will be:

= Social security tax rate x Gross pay of Edie

= 927.88 x 6.2%
= $57.52856

= $57.53

The Medicare tax rate is 1.45%. The Medicare tax can therefore be found by multiplying the gross pay by the Medicare tax rate:

= 927.88 x 1.45%

= $13.45

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Answer:

Slope of one of the dotted lines:

[tex]y=x[/tex] or [tex]y=x+5[/tex]

Slope of the line of reflection:

[tex]y=-x[/tex]

Step-by-step explanation:

When seeing the dotted lines, both of them have a rise & run of 1, indicating that y = x. However, one of the lines has a y-intercept of 5, making it y = x + 5. So, the slopes for the dotted lines are [tex]y=x[/tex] or [tex]y=x+5[/tex].

The line of reflection has a rise & run of -1, and goes through the origin, indicating that the equation is y = -x.

Answer: X = 8.4 Y= 3.5

Step-by-step explanation:

Answer:

-9x + 2 = -3(3x + 2).

Step-by-step explanation:

-9x + 2 = -3(3x + 2)

-9x + 2 = -9x - 6

0 = -8, which is absurd, so :-

No solutions.

Answer:

[tex]\sqrt{89}[/tex]units

Step-by-step explanation:

[tex]\sqrt{(7-13)^2+(10-2)^2}[/tex]

(-5)^2+(8)^2=25+64

25+64=89

[tex]\sqrt{89}[/tex]

the answer would be [tex]\sqrt{89}[/tex]

The value of the angle 16°43'27"is approximately 16.724167 degrees.

A plane angle is measured in degrees, with the letter ° typically used to indicate that one full rotation is equal to 360 degrees.

To convert a degree from minutes and seconds to decimal we must know the relation between degree and minutes and seconds.

1 degree=60 minutes.

1 minute = 60 seconds.

The given angle is 16°43'27"

27 seconds = 27 ÷ 60 minutes = 0.45 minutes = 0.45 ÷ 60 degree =0.0075 degree

43 minutes= 43 ÷ 60 degree = 0.71666666..

Total angle in decimal = 16+0.71666666+0.0075 =16.7241666...

Therefore required angle ≈ 16.7241667 degrees.

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The initial total attendance at a science museum is modeled by the function f(x)=17,371(1.041)x will be 17371.

It should be noted that from the information, the total attendance at a science museum is modeled by the function

In this case, the total attendance when x=0 will be:

f(x) = 17,371(1.041)x.

f(x) = 17,371(1.041^0)

= 17371 × 1

= 17371

Therefore, the total attendance when x = 0 will be 17371.

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The Image of the trapezoid under rigid transformation is given by A'B'C'D'  attached below.

The unique process of changing an existing graph or graphed equation to create a completely different version of the given graph is known as graph transformation.

In the given figure we can see that the Trapezoid ABCD is rotated around a fixed point to get the image of the trapezoid A'B'C'D'.

So the figure gets a rotational transformation.

From the figure we can assume that the figure is rotated about 135° clockwise about a fixed point.

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Answer:

C. an = 14 + 9n

Step-by-step explanation:

The cost of having one pizza delivered is $14. Each additional pizza costs $9 more.

Let n= additional pizza

an = 14 + (9 × n)

an = 14 + 9n

The required simplification of the given expression [tex]=\lim_{x \to \infty} \frac{x^2-4x +4}{x^2-4}[/tex] is 1.

Given that,
To determine the simplified value of the expression [tex]=\lim_{x \to \infty} \frac{x^2-4x +4}{x^2-4}[/tex].

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

here,
Given expression,
[tex]=\lim_{x \to \infty} \frac{x^2-4x +4}{x^2-4}[/tex]
[tex]=\lim_{x \to \infty} \frac{x^2(1-4/x +4/x^2)}{x^2(1-4/x^2)}[/tex]
Now put limits, so 1 / x², 1 / x becomes zero so,
= 1

Thus, the required simplification of the given expression is 1.

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Answer:

84 tablets with 6 per day

[tex]\frac{5.025 \times 10^{10}}{1.5 \times 10^{8}} \\ \\ =\frac{5.025}{1.5}(100) \\ \\ =\boxed{335}[/tex]

Option A is correct, 5.025 x 10¹⁰ is 335 times larger than 1.5 x 10⁸.

To determine how many times larger one number is than another, we divide the larger number by the smaller number.

In this case, we want to find how many times larger 5.025 x 10¹⁰ is than 1.5 x 10⁸.

Dividing the larger number by the smaller number:

(5.025 x 10¹⁰) / (1.5 x 10⁸)

To simplify, we can divide the coefficients (5.025 / 1.5) and subtract the exponents (10¹⁰ - 10⁸):

(5.025 / 1.5) x 10¹⁰⁻⁸

Evaluating the division of the coefficients:

(3.35) x 10²

Therefore, 5.025 x 10¹⁰ is 3.35 x 10² times larger than 1.5 x 10⁸.

In decimal form, this can be expressed as:

3.35 × 10² = 335

Therefore, 5.025 x 10¹⁰ is 335 times larger than 1.5 x 10⁸.

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Answer:

Step One: Evaluate the Function for A and B

f(1) = -6

f(2) = -1.5

Step Two: Use the Average Rate of Change Formula

f(b) - f(a) / b - a

-1.5 - -6 / 2 - 1

4.5 / 1

4.5

The average rate of change is equal to 4.5

In short, use

[tex] \frac{f(2) -f(1) }{2 - 1} [/tex]

Step-by-step explanation:

To explain, substitute 1 and 2 for f(x) then divide the difference of the two answers by the difference of the two x coordinates above to find the average rate of change

The value of function f(n) = f(n - 1) - 2, at n = 6 is f(6) = -4

In this question,

we have been given a function f(n) = f(n - 1) - 2

Also, we have been given the value of function f(n) for n = 1

i.e., f(1) = 6

We need to find the value of f(6).

For n = 2,

f(2) = f(2 - 1) - 2

f(2) = f(1) - 2

f(2) = 6 - 2

f(2) = 4

For n = 3,

f(3) = f(3 - 1) - 2

f(3) = f(2) - 2

f(3) = 4 - 2

f(3) = 2

For n = 4,

f(4) = f(4 - 1) - 2

f(4) = f(3) - 2

f(4) = 2 - 2

f(4) = 0

For n = 5,

f(5) = f(5 - 1) - 2

f(5) = f(4) - 2

f(5) = 0 - 2

f(5) = -2

For n = 6,

f(6) = f(6 - 1) - 2

f(6) = f(5) - 2

f(6) = -2 - 2

f(6) = -4

Therefore, the value of function f(n) = f(n - 1) - 2, at n = 6 is f(6) = -4

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The equation of the line in slope intercept form is y = (-4/3)x + 7.

According to the slope intercept form, the equation of a line is given as-

y = mx + c

where m is the slope and c is the y intercept.

Here we are given that an equation passes through the point (9,-5) and has a slope of -4/3.

According to the point slope form, the equation of a line passing through (x1, y1) and slope m is given as-

(y - y1) = m(x - x1)

Here,

x1 = 9, y1 = -5 and m = -4/3

Thus,

(y + 5) = -4/3(x - 9)

3(y + 5) = -4(x - 9)

3y + 15 = -4x + 36

3y = -4x + 21

y = (-4/3)x + 21/3

y = (-4/3)x + 7

This is our equation in slope intercept format as m = -4/3 and c = 7

Thus, the equation of the line in slope intercept form is y = (-4/3)x + 7.

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Month  Cost at Stack n’ Store   Cost at Smart Storage

1               $325                              $185

2              $475                                 $370

3               $625                                  $555

4               $775                                   $740

5                $925                                 $925

6                $1075                                $1100

The company that offers the better deal is Smart Storage.

After 5 months the cost would be the same at both storage companies.

The equation that represent the total cost of renting at Stack n’ Store is:

Total cost = non refundable deposit + charge per month

Total cost in the first month : $175 x ($150 x 1 ) = $325

Total cost in the second month : $175 x ($150 x 2 ) = $475

Total cost in the third month : $175 x ($150 x 3 ) = $625

Total cost in the fourth month : $175 x ($150 x 4) = $775

Total cost in the fifth month : $175 x ($150 x 5) = $925

Total cost in the sixth month : $175 x ($150 x 6) = $1075

The equation that represent the total cost of renting at Smart Storage is:

Total cost = cost per month x number of months

Total cost in the first month : $185 x 1 = $185

Total cost in the second month : $185 x 2 = $370

Total cost in the third month : $185 x 3 = $555

Total cost in the fourth month : $185 x 4 = $740

Total cost in the fifth month : $185 x 5 = $925

Total cost in the sixth month : $185 x 6 = $1,110

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[tex]{ \qquad\qquad\huge\underline{{\sf Answer}}} [/tex]

Let the numbers be : x, x + 1 and x + 2 ~

now, according to given condition :

[tex]\qquad \sf  \dashrightarrow \: x + 2(x + 1) = 98 - 3(x + 2)[/tex]

[tex]\qquad \sf  \dashrightarrow \: x + 2x + 2 = 98 - 3x - 6[/tex]

[tex]\qquad \sf  \dashrightarrow \: x + 2x + 3x = 98 - 6 - 2[/tex]

[tex]\qquad \sf  \dashrightarrow \: 6x = 90[/tex]

[tex]\qquad \sf  \dashrightarrow \: x = 90 \div 6[/tex]

[tex]\qquad \sf  \dashrightarrow \: x = 15[/tex]

So, tge required numbers are : 15, 16 and 17

Answer:

let x be -8

6(1-8)

6(7)

6x7=42

answer=42

The mean of the given data is 7.57 and the median of the given data is 8

Given that a data set i.e. Xi= 1,3,5,8,12,15,9. asked to find the mean and median of the given data.

Mean:

The mean is the average of the supplied numbers and is computed by dividing the total number of numbers by the sum of the given numbers.

Mean= [tex]\frac{sum of observation}{number of observation}[/tex]

Mean=[tex]\frac{1+3+5+8+12+15+9}{7}[/tex]

Mean=[tex]\frac{53}{7}[/tex]

Mean=7.57

The mean of the given data is 7.57

Median:

The median is a statistical metric that identifies the midway value of an ascending-ordered dataset (i.e., from smallest to largest value). The metric separates the dataset's lower and upper halves.

Arranging in ascending-order⇒1,3,5,8,9,12,15.

Then median=8

Therefore,The mean of the given data is 7.57 and the median of the given data is 8

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The amount used in decimal is 1.50

The given parameters are

Cans = 2

Amount used = 6/4

The amount used in decimal is calculated as:

Amount used = 6/4

Divide 6 by 4

So, we have

Amount used = 1.50

Hence, the amount used in decimal is 1.50

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Answer:

y=3x-2

Step-by-step explanation:

if for y=-3x-2 is being solved for x your answer would be:

y=3x-2

3x-2=y

3x=y+2

3x/3=y+2/3

so your final answer for this question is: x=y+2/3

and for the first one y=x-2 there is no answer for it

The required solution to the equation 4x^3 + 16x^2 + 28x = 0 is 0, -2 +  i√3,  -2 -  i√3

In mathematics, an equation is a formula that expresses the equality of two expressions by connecting them with the equal sign = .

Now the given equation is,

4x^3 + 16x^2 + 28x = 0

Taking x common we get,

x(4x^2 + 16x + 28) = 0

So, we get

x = 0

And 4x^2 + 16x + 28 = 0

or, x^2 + 4x + 7 = 0

Thus from the above equation is of the form

ax^2 + bx + c = 0

where, a = 1, b = 4 and c = 7

Therefore solution of the above equation is given as,

x = [-b ± √(b^2 - 4ac)] / 2a

Putting the values we get,

x = [-4 ± √(4^2 - 4*1*7)] / 2*1

so, x = [-4 ± √(16 - 28)] / 2

x = [-4 ± √(- 12)] / 2

x = [-4 ± 2√(- 3)] / 2

or, x = [-2 ± √(- 3)]

Since √-1 = i

∴ √(- 3) = i√3

Thus,

x = -2 ±  i√3

So, the required values of x are 0,  -2 +  i√3,  -2 -  i√3.

Thus, the required solution to the equation 4x^3 + 16x^2 + 28x = 0 is 0, -2 +  i√3,  -2 -  i√3.

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Answer:

Here us the answer in the attachment

Answer:

the person above is correct

Step- by-step explanation:

Answer:

f(x) = [tex]{\displaystyle {\sqrt[8]{x}}}[/tex]

Step-by-step explanation:

If we let
[tex]g(x) = x^2 - 3\\\\\rm Then \;f(g(x) \;also \;written\; as\; (f\;\circ \rm \;g) \;is\; f(x^2 - 3)\\\\For\; this \;to \;be\; \sqrt[8]{x^2-3} , \\\\\rm f(x) \;has\;to\;be\;\sqrt[8]{x}[/tex]

For the function f(x) =(4 sin x)/(1+cosx) , then f'(x) = 4/(1+cosx) using quotient rule of differentiation and f'(2) = 2.00

Quotient rule for differentiation states that the differentiation the division of two functions u, v is given as

(u/v)' = (u' v  - u v')/v² , where '  represents first derivative  with respect to independent variable

Given f(x) = (4sinx)/(1+cosx)

let u =4 sin x , v = 1+cos x , u'=4cos x , v' = -sin x

Then f(x) =u / v

Using quotient rule of differentiation:

f'(x) = ( u' v -u v' )/v² = (4cosx(1+cosx) +4sin²x )/(1+cos x)²

f'(x) = = 4(cos x +cos² x +sin² x)/(1+ cos x)² = 4(cos x +1)/(1+ cos x)²  

f'(x) = 4/(1+ cos x)

To find value of f'(x) at x= 2

f'(5) = 4/(1+cos2) = 2.000609= 2.00(rounding off )

Therefore if f(x) = (4x² tan x)/sec x  then f'(x) = 4/(1+cos x) and f'(2) =2.00

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Please see the attached image for your answer. Hope this helps! If you can't read something please let me know.