What is the solution to the system?.
8x - 8y =-8
X=-3y=13

The quadrilateral is parallelogram because the opposite sides are parallel and congruent

What is a parallelogram?

A parallelogram is a quadrilateral with two pairs of parallel sides. The opposite sides of a parallelogram are equal in length, and the opposite angles are equal in measure. Also, the interior angles on the same side of the transversal are supplementary. The Sum of all the interior angles equals 360 degrees.

Since WZ and XY are congruent and XW and YZ are congruent and Also, WZ and XY are parallel and XW and YZ are parallel, we can therefore say that the quadrilateral obeys the property of a parallelogram.

parallel lines are two straight lines that can not meet at a point.

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Answer:

x 23 y 60

Step-by-step explanation:

The correct option regarding the 95% confidence interval for this problem is given as follows:

A. The confidence interval from the first simulation is (0.187, 0.237), and the confidence interval from the second simulation is (0.209, 0.261). For the first trial, we are 95% confident the true proportion of wins with the new game strategy is between 0.187 and 0.237. For the second trial, we are 95% confident the true proportion of wins with the new game strategy is between 0.209 and 0.261.

A confidence interval of proportions has the bounds given by the rule presented as follows:

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which the variables used to calculated these bounds are listed as follows:

The confidence level is of 95%, hence the critical value z is the value of Z that has a p-value of [tex]\frac{1+0.95}{2} = 0.975[/tex], so the critical value is z = 1.96.

The parameters for the first simulation are given as follows:

[tex]n = 1000, \pi = \frac{212}{1000} = 0.212[/tex]

Hence the lower bound of the interval is of:

[tex]0.212 - 1.96\sqrt{\frac{0.212(0.788)}{1000}} = 0.187[/tex]

The upper bound is of:

[tex]0.212 + 1.96\sqrt{\frac{0.212(0.788)}{1000}} = 0.237[/tex]

For the second simulation, the parameters are given as follows:

[tex]n = 1000, \pi = \frac{235}{1000} = 0.235[/tex]

Hence the lower bound of the interval is of:

[tex]0.235 - 1.96\sqrt{\frac{0.235(0.765)}{1000}} = 0.209[/tex]

The upper bound is of:

[tex]0.235 + 1.96\sqrt{\frac{0.235(0.765)}{1000}} = 0.261[/tex]

This means that option A is the correct option.

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If Mccay purchased a home in a flood zone for $26500 , and the value depreciates by 2.5% , then the value of house after 5 years will be $23349     .

the current value of Mccay's house is = $26500  ;

the percent decrease in the value of the house is = 2.5% per year ;

let the number of years be = "n" years ;

we know that 2.5% is = 0.025 ;

the Depreciated Value(V) of the house can be written as :

V = 26500(1 - 0.025)ⁿ ;

to  find the value of house after 5 years we substitute n = 5 ;

V = 26500(0.975)⁵ = 23349.035

V = 23349 .

Therefore , the value of the house after 5 years will be $23349  .

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Answer

60%

Step-by-step explanation:

Answer: 75% of students are girls.

Step-by-step explanation: First, you divide 960 by 100 to get 9.6. Then you do 960-240 to get the amount of girls (720), then you divide 720 by 9.6 to get 75.

The equation which is required to solve how many of each board John needs is x + x - 7 = 23.

The number of 20-foot boards is 15.

The number of 16-foot boards is 8.

As per the given data, John needs 23 boards to build rafters for his house.

He can use 16-foot or 20-foot length boards.

He needs seven fewer 16-foot boards than 20-foot boards.

Here we have to determine how many of each board John needs.

Let the number of 20-foot boards be x.

Then the number of 16-foot boards be x - 7.

Total number of boards are 23.

Equation to determine how many of each board John needs:

x + x - 7 = 23

2x - 7 = 23

2x = 23 + 7

2x = 30

x = 15

The number of 20-foot boards are 15.

The number of 16-foot boards are x - 7

= 15 - 7

= 8

The number of 16-foot boards are 8.

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The amount he will be able to depreciate using the class recovery period for a residential rental property each year is D. $10,909.09.

The term depreciation defines as an accounting method used to allocate the cost of a tangible or physical asset over its useful life.

It also represents how much of an asset's value has been used, and allows companies to earn revenue from the assets they own by paying for them over a certain period of time.

Using this formula:

Depreciation=Rental unit amount/ MACRS residential rental property recovery period

Where:

Rental unit amount=$300,000

MACRS Residential rental property recovery period=27.5 years

Let's plug in the formula

Depreciation=$300,000/27.5

Depreciation=$10,909.09

In conclusion, the amount he will be able to depreciate  using the class recovery period for a residential rental property each year is: D. $10,909.09

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N(u) = 4, where N is the function and u is the independent variable, is the function that is provided.

The input values for a particular function are shown by the independent variable (x).An experiment involves controlling the independent variables while it is being conducted.

The results of the function are shown by the dependent variable (y). In an experiment, a variable that stands in for a variable being changed is known as an independent variable.As the independent variable in an equation, x is frequently employed as its symbol.

N(u) = 4, where N is the function and u is the independent variable, is the function that is provided.

Since u is no longer a variable, the value of the function N(u) is now a constant.

As a result, the N(u) function will always equal 4 for all values of the variable u, making it a constant function.

Thus, N(4) = 4. ( Answer )

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The answer is -1(x - 5)(x + 1)

To simplify the rational expression x^2 - 5x + 5 - x - 5, we can combine like terms and factor out the greatest common factor of the numerator and denominator.

Step 1: First, we can combine like terms in the numerator to get x^2 - x - 5

Step 2: Next, we can factor out the greatest common factor of -1 from the numerator to get -1(x^2 - x - 5)

Step 3: Now we can factor the expression in the parenthesis:

-1(x - 5)(x + 1)

So the simplified form of the given rational expression is: -1(x - 5)(x + 1)

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Answer:

-6x+x^2

Step-by-step explanation:

To start off the equation you want to make everything have the same symbol:

x^2+-5x+5+-x+-5

next, you can rearrange the symbols to combine terms:

5+-5+-x+-5x+x^2

Now we combine:

-6x+x^2

the 5 cancels out. The -x plus the -5x gets you -6x. and the x^2 can not be combined.

Your answer:

-6x+x^2

Answer:

g(12) = 3

Step-by-step explanation:

g(12) means to put 12 in place of x.

g(x) = 1/2x - 3

g(12) = 1/2(12) - 3

Mulitply 1/2 and 12.

= 6 - 3

subtract.

= 3

g(12) = 3

The solution of the system of equations:

is (-3, 6)

Here we want to solve the system of equations below:

y = -5x + 21

-4x + y = 6

We can use the elimination method to solve this if we take the difference between the two equations, we will get:

y - (-4x + y) = -5x - 21 - 6

4x = -5x - 27

Now we can solve this for x.

4x + 5x = -27

9x = -27

x = -27/9 = -3

And the value of y is given by:

y = -5x - 21  (we need to evaluate that on x = -3)

y = -5*-3 - 21

y =  15 - 21 = 6

The solution is (-3, 6).

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Answer: Elimination : (-3,-6) Substitution : (5/3,38/3)

Step-by-step explanation: Elimination : y = -5x + 21;-4x + y = 6                                                   y - (-4x + y) = -5x - 21 - 6                                     4x = -5x - 27                                                                       4x + 5x = -27                                                           9x/9 = -27/9                                                                           x = -3                                                                                          y = -5x - 21 y = (-5) (-3) - 21   y = 15 - 21                                                                               y = -6                                                                                       (-3,-6) Substitution : y = -5x + 21;-4x + y = 6 −4x + −5x + 21 = 6 −9x + 21 - 21 = 6 - 21 -9x/-9 = -15/-9 x = 5/3 y = −5x + 21 y = −5 (5/3) + 21 (-25) (1) + (21) (3) / (3) (1) -25/3 + 63/3 y = 38/3 (5/3,38/3)

The value of x, y, and z in the rhombus are -114, 7 and 59 respectively

Since the opposite angles of a rhombus are equal to each other. We can write:

(-x-10)° = 104°

-x-10 = 104

-x = 104 + 10

x = -114

Since the adjacent angles in rhombus are supplementary. We have:

114 + (z + 7) = 180

121 + z = 180

z = 180 -121

z = 59

104  + (10y + 6) = 180

110 + 10y = 180

10y = 180 - 110

10y = 70

y = 70/10

y = 7

Thus, the value of x, y, and z are -114, 7 and 59

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The probability that a teenage boy has a cholesterol level greater than 200 is 0.33: Option D

It is the chance of occurrence of an event E

To solve this problem you must first find the z-score associated with a cholesterol level greater than 200.

The general formula for a z score is:

z = (x-µ)/σ

Where z is the z score, x is the data point, µ is the mean, and σ is the standard deviation. With your numbers that would become:

z = (200-170)/30

z = 1.833

If you are using a graphing calculator, such as the TI-83 Plus, you can then go to 2nd vars, and the second option is normalcdf

To use normalalcdf enter normalcdf (lower z score, upper z score) in your case normalcdf (1.833, 1E99) to get the probability that a teenage boy has a cholesterol level greater than 200 Which will give you .0337.

If you are using a z table, find the probability associated with your z score of 1.83, and subtract that from 1. You subtract from 1 because a z table gives you the probability of a score being below the one you obtained.  

This implies therefore that the probability is 0.337

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The volume of a pyramid with a base area of 15 square inches and a height of 7 inches will be 35 cubic inches.

Suppose the base of the pyramid has length = L units and width = W units, slant height = K units, and the height of the pyramid is of H units.

Then the volume of the pyramid will be

V = (L × B × H) / 3

V = (Base area x H) / 3

The volume of a pyramid varies jointly with the base area of the pyramid and its height.

The volume of one pyramid is 24 cubic inches when its base area is 24 square inches and its height is 3 inches.

Then the volume of a pyramid with a base area of 15 square inches and a height of 7 inches will be

V = (15 x7) / 3

V = 35 cubic inches

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see attachment..........

The required values of x, y and z are 58°, 29° and 60°

An angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

Given are two triangles with unknown angles, we are asked to find, value of x, y and z.

Since, the lines are given parallel,

Therefore,

2y = 58° [alternate interior angles]

y = 29°

Now,

2y = x [alternate interior angles]

x = 58°

Since, we know that, the sum of interior angles of a triangle is 180°

Therefore,

x + z + 62° = 180°

58° + 62° + z = 180°

z = 180° - 120°

z = 60°

Hence, the required values of x, y and z are 58°, 29° and 60°

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The equivalent ratio where the amount of stock is 100 mL is 80 mL

An equivalent ratio is a ratio that is equal to another ratio, but with the terms in a different order or with different values.

Since the recipe calls for 350 mL of Dashi in order to make a smaller batch using 280 mL of Dashi. Thus, we can say:

equivalent ratio = 280/350

Thus, an equivalent ratio where the amount of stock is 100 mL will be:

280/350 = x/100

0.8  = x/100

x = 0.8 × 100

x = 80 mL

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If the shaded area is 112 cm², then the length x in the figure is 7cm.

The area of Rectangle is length times of width.

Split the shape into two rectangles:

then you have two areas:

x×10 and x×6

the shaded area is given as 112cm²

10x+6x=112

Add the like terms

16x=112

Divide both sides by 16

x=112/16

x=7 cm

Hence, if the shaded area is 112 cm², then the length x in the figure is 7cm.

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21 = 3 · 7

33 = 3 · 11

If 21 and 33 are two divisors, then so are 3, 7, 11, and 77.  And 1 and the number itself are always divisors.

So, we have 1, 3, 7, 11, 21, 33, 77, and the number. That's eight divisors.

So the number is 3·7·11 = 231, the product of only the prime divisors of the number.

Answer:

  x = 4 . . . cm

Step-by-step explanation:

You want the measure of the segment CE from external point C to circle O, given several other dimensions of chords and segments in the circle.

As in the attachment, we can extend segment DO across the circle to make diameter DX. Then we can use the relation for chord lengths to find the radius of the circle (r).

Segments of crossing chords have the same product:

  FA·FE = FD·FX

  7·4 = 2·(2r -2) . . . . . use given segment values

  14 = 2r -2 . . . . . . divide by 2

  16 = 2r . . . . . . . add 2

  r = 8 . . . . . . . divide by 2

The radius of the circle is 8 cm.

We can also extend radius EO across the circle to make diameter EY, as shown in the attachment.

The relation involving the product of secant segments can be used to find x:

  CE·CY = CB·CA

  x(x +16) = 5(5+4+7)

  x² +16x = 80 . . . . . . . . simplify

  x² +16x +64 = 144 . . . . . . . add 64 to complete the square

  (x +8)² = 12² . . . . . . . . . write as squares

  x +8 = 12 . . . . . . . . positive square root

  x = 4 . . . . . . . . subtract 8

The value of x is 4.

__

Additional comment

The attachment is accurately drawn.

The equation is 2x + 6x = 48. Then the unknown number will be 6.

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

The sum of double a number and six times a number is 48.

Let the unknown number be 'x'. Then the equation is given as,

2x + 6x = 48

Simplify the equation, then the value of 'x' is given as,

2x + 6x = 48

8x = 48

x = 48 / 8

x = 6

The equation is 2x + 6x = 48. Then the unknown number will be 6.

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For the given case, the  the range of values for the length of the run using inequalities is  4 < l < 8.5.The equation for the area of a rectangle is A = w x l, where w is the width and l is the length.

To find the range of values for the length of the run, we need to set up an inequality equation. We know the width is 4cm, so A = 4l > 50m2. This can be rearranged to 4l > 50m2, and then divided by 4 to get l > 50/4m2, which gives us l > 12.5m. This means that the length of the run must be greater than 12.5m.  

We also know that Ben has a maximum of 34m of fencing to use, so l < 34/4m, which gives us l < 8.5m. This means that the length of the run must be less than 8.5m.  Therefore, the range of values for the length of the run using inequalities is 4 < l < 8.5m.

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No S with sum greater than 61 is possible and 61 is indeed the maximum.

By using the greedy algorithm, we obtain 61, with S={15,14,13,11,8}.

We must now prove that no such set has sum greater than 61. Suppose such a set [tex]$S$[/tex] existed. Then [tex]$S$[/tex] must have more than 4 elements, otherwise its sum would be at most 15+14+13+12=54.

S can't have more than 5 elements. To see why, note that at least.

[tex]$\left(\begin{array}{l}6 \\ 0\end{array}\right)+\left(\begin{array}{l}6 \\ 1\end{array}\right)+\left(\begin{array}{l}6 \\ 2\end{array}\right)+\left(\begin{array}{l}6 \\ 3\end{array}\right)+\left(\begin{array}{l}6 \\ 4\end{array}\right)=57$[/tex] of its subsets have at most four elements (the number of subsets with no elements plus the number of subsets with one element and so on), and each of them have sum at most 54. By the Pigeonhole Principle, two of these subsets would have the same sum. If those subsets were disjoint, we would directly arrive at a contradiction; if not, we could remove the common elements to get two disjoint subsets.

Thus, [tex]$S$[/tex] would have to have 5 elements. [tex]$S$[/tex] contains both 15 and 14 (otherwise its sum is at most 10+11+12+13+15=61.

It follows that [tex]$S[/tex] cannot contain both a and a-1 for any [tex]$a \leq 13$[/tex], or the subsets {a,14} and {a-1, 15} would have the same sum. So now [tex]$S$[/tex] must contain 13 (otherwise its sum is at most 15+14+12+10+8=59, and S cannot contain 12, or the subsets, {12,15} and {13,14} would have the same sum.

Now the only way [tex]$S$[/tex] could have sum at least 62=15+14+13+11+9

would be if S={15,14.13,11.9}. But the subsets {9,15} and {11,13} have the same sum, so this set does not work.

Therefore, no S with sum greater than 61 is possible and 61 is indeed the maximum.

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a. The representation of 1 inch in the model is 30 feet.

ii. The scale is 1:30.

b. The scale factor of the model is 1:360.

A scale factor is also referred to as a representation fraction which is the rate of length on drawing to that of the original length.

i.e. scale factor = length on drawing/ original length

Given that Washington space Needle is 20 inches tall. And the actual space Needle is approximately 600 feet tall, then;

a. 1 inch in the model = 600 feet/ 20 inch

                                = 30 feet / inch

i. The representation of 1 inch in the model is 30 feet.

ii. The scale is 1:30 i.e. 1 inch on the drawing is equal to 30 feet on the actual model.

b. The scale factor of the model is;

1 feet = 12 inches

   600 feet = x

x = 7200 inches

scale factor = 20 / 7200

                    = 1/ 360

The scale factor is 1:360. i.e. 1 inch on the drawing is equivalent to 360 inches on the actual model.

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The height of the utility pole casting a shadow 10 ft is 32 feet.

A ratio is simply the relation between two amounts showing how many times a value is contained within another value.

Given that;

Ratio of height of utility pole and its shadow  = x / 10

Ratio of height of sign post and its shadow  = 8/2.5

Equate to determine the height of the utility pole.

x/10 = 8/2.5

Solve for x

x × 2.5 = 8 × 10

2.5x = 80

x = 80 / 2.5

x = 32 ft

Therefore, the height of the utility pole is 32 ft.

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The bakery will not have enough time to bake 10 batches of bagels in 6 hours.

Multiplication of two numbers is defined as the addition of one of the number repeatedly until the times of the other number.

Given that,

There is a time limit of 6 hours to make 10 batches of bagel.

Time needed to make 1 batch of bagel = 3/4 hour

Time needed to make 10 batches of bagel = 10 × (3/4)

                                                                        = 30 / 4

                                                                        = 7.5 hours

Hence at least 7.5 hours is needed to make 10 batches of bagel.

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Answer: With 4/3 cups of sugar, Kris can make (4/3) / (2/3) = 2 batches of cookies.

Step-by-step explanation:

As per the given ratio between distance, The Train ride from Chicago to Port Huron is 304.375 miles.

The ratio can be defined as the number that can be used to represent one quantity as a percentage of another. Only when the two numbers in a ratio have the same unit can they be compared. Ratios are used to compare two objects.

Given, A train ride from Chicago to Emeryville, California, is 2,438 miles.

Since It is about 8 times as long as a train ride from Chicago to Port Huron, Michigan.

Thus,

The train ride from Chicago to Port Huron = 2438/8

The Train ride from Chicago to Port Huron = 304.375 miles

Therefore, The Train ride from Chicago to Port Huron is 304.375 miles.

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Suppose that your goal is to build a credit history by establishing a FICO score. you should approach payments on a long-term loan, such as an auto loan by: A. pay the minimum amount required each bill.

Credit history can be defined as the record that help to show a creditworthiness of a person which is the ability to pay back a loan.

FICO score on the other hand is as well used to determine the creditworthiness of a borrower based on the fact that this score help to show  whether a borrower used to pay the amount loan to him/her on time or delay it.

Therefore the correct option is A.

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Answer:

the last one

Step-by-step explanation:

Answer: One real solution (0)

Step-by-step explanation:

The only thing square which equals 0 is 0 itself.