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The 2 equations will have infinitely many solutions if k equals 10.

Here we have

10x + 5y − (k−5) = 0 and 20x + 10y − k = 0

Since these 2 are already in the standard form

a₁x + b₁y + c₁ = 0

and

a₂x + b₂y + c₂ = 0

we don't have to make any changes to them

According to the law, an equation has infinitely many solutions if

a₁/a₂ = b₁/b₂ = c₁/c₂

here,

a₁ = 10,  b₁ = 5, and c₁ = - k + 5

and,

a₂ = 20, b₂ = 10, and c₂ = - k

Hence, we get

10/20 = 5/10 = ( - k + 5)/(-k)

or, (k - 5)/k = 1/2

or, 2k - 10 = k

or, k = 10

Hence the 2 equations will have infinitely many solutions if k is equal to 10.

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Complete Question

For what value of k does the following pair of linear equations have infinitely many solutions?

10x + 5y − (k−5) = 0 and 20x + 10y − k = 0

43% of eighth graders claim to spend more than an hour every day on social media.

A ratio written as a fraction of 100 is what is referred to as a percentage.

Students were asked in a survey if they thought they used social media more or less than an hour every day.

Added to Less

7th 12 14

8th 20 26

The number of students who responded "more" must be divided by the total number of 8th-grade students polled, and the result must then be multiplied by 100 to get the percentage of students who said they spend more than an hour a day on social media.

20 out of 46 students (20+26) responded "more," or roughly 43.48%.

As a result, 43% of eighth graders believe they spend more than an hour every day on social media.

The Complete Question.

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The equation states the ratio of two numbers, where the numerator and denominator can be changed to obtain an equivalent equation. To solve for the meaning term, the numbers in the numerator and denominator must be manipulated to get the same ratio and the value of the meaning term can be found.

1)2:3=N:21

N=21*2/3

N=14

2)5:2=20:N

N=20*5/2

N=50

3)2:7=12:N

N=12*2/7

N=4.57

4)6:7=30:N

N=30*7/6

N=35

5)N:10=15:55

N=15*10/55

N=2.73

The equation states the ratio of two numbers, where the numerator and denominator can be changed to obtain an equivalent equation. To solve for the meaning term, the numbers in the numerator and denominator must be manipulated to get the same ratio. To do this, the numerator and denominator of the first equation can be multiplied or divided by the same number to get the same ratio as the second equation. When the ratio is the same, the meaning term can be found by dividing the numerator of the second equation by the denominator of the first equation. For example, the equation 2:3 = N:21 can be solved by multiplying 3 and 21 by 2, giving 6:42 = N:42, which has the same ratio. The meaning term is then found by dividing 42 by 3, giving N = 14. This process can be applied to all equations to find the meaning term.

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Answer:50

Step-by-step explanation:

Un equipo de cuatro personas participó en una carrera de relevo de 400 yardas, lo que significa que cada miembro del equipo corrió una distancia de 400 yardas. El equipo completo completó la carrera en 53.2 segundos. Para calcular el tiempo promedio que cada persona corrió, debemos dividir el tiempo total de la carrera entre el número de personas en el equipo. En este caso, se divide 53.2 segundos entre 4 personas, lo que da un tiempo promedio de 13.3 segundos por persona.

Answer:

Step-by-step explanation:

The element will be gone in approximately 10.9 minutes.

We can calculate this by using the formula:

Time = (log(Initial mass / Final mass)) / (log(1 - decay rate))

Time = (log(300 / 110)) / (log(1 - 0.054))

Time = 10.9 (rounded to the nearest tenth of a minute)

Therefore, The element will be gone in approximately 10.9 minutes.

A logarithmic function is a mathematical function that relates the logarithm of a number to its argument. The logarithm of a number (base 10) is represented by the log symbol (log 10) and the number being used as the argument. The inverse of this function is an exponential function, which relates the exponential of a number to its argument. Logarithmic functions are often used in mathematics and science to simplify and solve equations involving large exponents. They are also commonly used in finance, engineering, and other fields that involve large numbers.

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Time = (log(Initial mass / Final mass)) / (log(1 - decay rate))

Time = (log(300 / 110)) / (log(1 - 0.054))

Time = 10.9 (rounded to the nearest tenth of a minute)

The example of a linear equation in two variables in standard form is 3x + 2y = 6

A linear equation in two variables in standard form is of the form:

Ax + By = C

where A, B, and C are constants and x and y are variables.

An example of a linear equation in two variables in standard form is:

3x + 2y = 6

This equation can be written in standard form by first subtracting 6 from both sides,

3x + 2y -6 = 0

and then dividing both sides by the greatest common factor of the coefficients,

(3/1)x + (2/1)y = 6/1

This gives the standard form of the equation:

3x + 2y = 6.

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The length of BD and CD are 15 units and 20 units respectively

By the Angle Bisector Theorem, we have:

BD/DC = AC/BC = 21/28

We can use the Pythagorean Theorem to find AC:

AC² + BC² = AB²

21² + 28² = AB²

AB = 35 units

Now we can use the Angle Bisector Theorem to find BD:

BD/DC = 21/28

BD + DC = AB

BD = (21/49) × AB

BD = (21/49) × 35

BD = 15 units

To find CD, we can use the fact that BD + DC = AB:

CD = AB - BD

CD = 35 - 15

CD = 20 units

Therefore, the length are BD = 15 and CD = 20 units.

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How many kilometers he ran per hour?

Alex ran 6 kilometers per hour.

The ratio can be calculated as follows:

The first is to convert mixed fractions to improper fraction

4 [tex]\frac{1}{2}[/tex] km =  [tex]\frac{(4x2)+1}{2}[/tex] km

= [tex]\frac{8+1}{2}[/tex] km

= [tex]\frac{9}{2}[/tex] km

The next step is to compare worth comparison

[tex]\frac{a1}{b1}[/tex] = [tex]\frac{a2}{b2}[/tex]

[tex]a_{1}[/tex] = 4 [tex]\frac{1}{2}[/tex] km = [tex]\frac{9}{2}[/tex] km

[tex]a_{2}[/tex] = X

[tex]b_{1}[/tex] = [tex]\frac{3}{4}[/tex] hour

[tex]b_{2}[/tex] = 1 hour

So,

[tex]\frac{9/2}{3/4}[/tex] = [tex]\frac{X}{1}[/tex]

X = [tex]\frac{(9/2)x1}{3/4}[/tex]

X = [tex]\frac{9/2}{3/4}[/tex]

X = [tex]\frac{9}{2}[/tex] × [tex]\frac{4}{3}[/tex]

X = [tex]\frac{36}{6}[/tex] kilometers

X = 6 kilometers

Alex ran 6 kilometers per hour.

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[tex]\it tan60^o=\dfrac{AB}{BC} \Rightarrow \sqrt3=\dfrac{AB}{50} \Rightarrow AB=50\sqrt3\approx50\cdot1,732\approx87\ m[/tex]

The expression 2x2 3x 9 area of the garden is a quadratic polynomial.

2x2 contains a power value and 3x contains the constant x and 9 is the integer so this is the Quadratic Polynomial. When a variable term in the polynomial expression has a highest power of 2, the polynomial is said to be quadratic.

Only the exponent of the variable is taken into account when determining a polynomial's degree. It is not taken into account how strong a coefficient or constant term is.

A quadratic equation or quadratic function is created when a quadratic polynomial is equal to 0. The roots or zeros of the quadratic equation are the name given to the solutions of such an equation.

The capability to derive a number of significant inferences from the analysis of the discriminant is an additional advantage of this approach.

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Full Question: What is the type of polynomial 2x^2-3x-9 expressing area of the garden?

(a) linear polynomial

(b)Quadratic polynomial

(c) cubic polynomial

(d) constant polynomial​

Answer:

Step-by-step explanation:

It is Linear

One tray will hold 590.877 cubic centimeters.

Volume of a three dimensional shape is the space occupied by the shape.

We have to find the volume of a cone-shaped popsicle mold and then multiply it with 6 to find the required answer.

Volume of a cone = [tex]\frac{1}{3}[/tex] π r² h

Given,

Diameter = 5.4 cm

Radius = Diameter / 2 = 5.4 / 2 = 2.7 cm

Height = 12.9 cm

Volume of the cone = [tex]\frac{1}{3}[/tex] π × (2.7)² × 12.9

                                 = [tex]\frac{1}{3}[/tex] π × 94.041

                                 = 98.4795

Total volume of 6 molds in the tray = 98.4795 × 6

                                                           = 590.877 cubic centimeters

Hence the volume of the molds that the tray hold is 590.877 cubic centimeters.

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You can solve 2 equations with 2 variables using calculator in equation mode.

To solve a system of two equations with two variables using a scientific calculator, you can use the following steps (based on CASIO fx-991ES PLUS):

First press the 'mode' button and then press '5' corresponding to equations.

Now press '1' corresponding to a linear equation in two variables of format anX + bnY = cn. Now a matrix appears, each row correspond to each equation. The first column represent the coefficient of X, second column represent the coefficient of Y and third column, the coefficient. Note that the equation should be of the format mentioned before.

Now press '=' to get the solution. On the first press you get X and on second press, you get the value of 'Y'.

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The four conditions of a binomial distribution are: independence, normality, symmetry, and rarity.

Independence: Each trial in a binomial distribution is independent of the other trials, meaning that the outcome of one trial does not affect the outcome of any other trial.

Normality: The distribution of the data follows a normal distribution, meaning that it is bell-shaped and symmetrical.

Symmetry: The binomial distribution is symmetrical around the mean, meaning that the probability of the outcome being above the mean is the same as the probability of the outcome being below the mean.

Rarity: The binomial distribution is characterized by rare events, meaning that the probability of an event occurring is relatively low. This is because the outcomes of each trial are determined by a random process.

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Answer:Hi there the answer is in quizlet is another page :) flashcards  TRIGONOMETRIC RATIOS

1. She can look at similar job postings online to compare the salary range offered.

2. She can contact the average employer and ask directly what salary range they offer for the job.

There are two ways Bruna can compare the pay for advertised jobs. First, she can research the salary range of similar job postings. This can be done through job search websites, social networks, and other online resources. She can look at the salary range offered for similar jobs to get an idea of the pay she can expect from an employer.

The second way she can find out the best paying job for her is to ask the employer directly about the salary range. She can contact the employer and ask directly what salary range they offer for the job. This will give her an accurate picture of the salary range that the employer is offering, so she can make an informed decision on which job to apply for. By using these two methods, Bruna can compare the pay for advertised jobs and find the one that offers the best salary.

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Using the given information, we can calculate the z-score as z = (56.4 - 67.6) / 3.5, which gives us a z-score of -2.3. This means that 2.3 standard deviations below the mean of adult men's heights is the doorway height of 56.4 inches. Since the area under the normal curve from -∞ to -2.3 is 16%, this means that 84% of adult men can fit through the door without bending.

Using the given information and the desired percentage, we can calculate the z-score as z = (x - 67.6) / 3.5, where x is the doorway height. Solving for x, we get x = 57.6 inches. Therefore, a doorway height of 57.6 inches would allow 40% of adult men to fit through without bending.

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The perimeter of the pentagon is 76 units. The solution is obtained using tangent to circle.

What is tangent to a circle?

A line that touches a circle only once is said to be tangent to it. A point to circle can only have one tangent.

In the figure, the circle is circumscribed by the pentagon.

We are given QZ = 10, YX = 9, WX = 9, UW = 17, and US = 10

VW = WX = 9   (tangent of circle)

So, VU = UW - VW

VU = 17-9= 8

Since, VU and UT are tangents of circle, therefore

UT = 8

US = UT + TS

⇒10 = 8 + TS

⇒TS = 2

Now, TS and SR being tangents, therefore

TS = SR = 2

Also, RQ and QZ are tangents, therefore

RQ = QZ = 10

Similarly, ZY and YX are tangents, therefore

ZY = YX= 9

Thus, Perimeter = SQ + QY + YW + WU + US

⇒Perimeter = SR+ RQ+ QZ+ ZY+ YX+ XW+ UW+ US

⇒Perimeter = 2+ 10+ 10+ 9+ 9+ 9+ 17+ 10

⇒Perimeter = 76 units

Hence, the perimeter of the pentagon is 76 units.

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The measure of angle G is 121 degrees and this can be determined by using the sum of interior angle properties.

Sum of interior angles is calculated using the formula (n 2) 180, where is the total number of sides. In a regular polygon, each inside angle is the same. Interior angle of a polygon is equal to the sum of interior angles divided by the number of sides, according to the following formula. One of the first things we all learned about triangles was that the sum of the internal angles is 180 degrees.

Given :

Triangle FHG

Applying the sum of interior angles property on the triangle FHG. According to the sum of interior angles property:

[tex]$$\angle \mathrm{F}+\angle \mathrm{H}+\angle \mathrm{G}=180^{\circ}$$[/tex]

Now, substitute the values of the known terms in the above equation.

[tex]$$(x-5)+(x)+(3 x+25)=180$$[/tex]

Simplify the above equation In order to determine the value of ' $x$ '.

[tex]& 5 x+20=180 \\[/tex]

[tex]& 5 x=160 \\[/tex]

[tex]& \mathbf{x}=\mathbf{3 2} \text { degrees }[/tex]

So the angle[tex]$\mathbf{G}$[/tex] is given by:

[tex]& \angle \mathrm{G}=3(32)+25 \\[/tex]

[tex]& \angle \mathrm{G}=121^{\circ}[/tex]

The complete question is,

What is m∠G ?

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The following triangles are congurent

Yes SAS

Answer:

$800.516

Step-by-step explanation:

We use the equation

A = P(1 + [tex]\frac{r}{n}[/tex])^nt

P = principal

r = rate of interest

t = times

Now let's solve

P = $500

r = 4% = 0.04

t = 12 years

A = $500(1 + [tex]\frac{0.04}{12}[/tex] ) ^12 = $800.516

So, the value of k that makes the system of equations kx - 5y = 2, 6x + 2y = 7 has no solution is -1.

A system of linear equations has no solution when the equations are inconsistent, which means that there is no set of values for the variables that would make both equations true at the same time.

In the case of the system of equations kx - 5y = 2, 6x + 2y = 7, we can check for consistency by trying to find a unique solution for the system. We can use different methods such as elimination, substitution or Gaussian elimination.

If we use elimination method, we try to eliminate one of the variable from one equation and substitute it in another equation. By adding the two equations, we get: (k + 6)x = 9, which implies that the value of x is x = 9/(k+6).

Now by substituting this value into the first equation we get k*9/(k+6) - 5y = 2

And we can find the value of y by dividing both sides by -5/1: y = (2*(k+6))/(5*k)

Now if we substitute this value of x and y into the second equation:

6x + 2y = 7

We get: 6*(9/(k+6)) + 2*((2*(k+6))/(5*k)) = 7

And if we simplify this equation we get: 9 + 4/(5*k) = 7(k+6)/(k+6)

And that gives us k = -1, which means the system has no solution.

Therefore, the value of k that makes the system of equations kx - 5y = 2, 6x + 2y = 7 has no solution is -1.

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All possible solutions for the inequalities are from 2.5 to infinity.

Option F is the correct answer.

All possible solutions for the problem situation are 2.5 to 8.

Option D is the correct answer.

It shows a relationship between two numbers or two expressions.

There are commonly used four inequalities:

Less than = <

Greater than = >

Less than and equal = ≤

Greater than and equal = ≥

We have,

27 ≤ 12 + 6x

Solve for x.

27 - 12 ≤ 6x

15 ≤ 6x

x ≥ 15/6

x ≥ 5/2

x ≥ 2.5

This means,

x values can be 2.5 and more.

Now,
For x = 8,

12 + 6 x 8

= 12 + 48

= 60 gallons (possible)

For x = 9,

12 + 6 x 9

= 12 + 54

= 66 gallons (not possible)

Since the maximum gallon the pool can contain is 60 gallons.

Thus,

All possible solutions for the inequalities are from 2.5 to infinity.

All possible solutions for the problem situation are 2.5 to 8.

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You are a parabola with vertex at (x,y) = (-4,0) and a focus at (x,y) = (-4,3).

A parabola is a mathematical curve that is symmetrical in shape and is often described as an upside-down U. It is a two-dimensional, closed curve and is an important part of conic section geometry. A parabola has a single vertex, which is the highest or lowest point of the parabola. It can also be thought of as the focus of the parabola.

The zeros you have listed are the x-intercepts, which means that your equation is of the form y = ax^2 + bx + c, and your a value is negative because your parabola opens downwards. You can determine the other coefficients by looking at the vertex and focus coordinates.

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Using SAS, property of triangle congruency, ΔRTV ≅ ΔRTS.

Triangle congruence: If all three corresponding sides and all three corresponding angles are equal in size, two triangles are said to be congruent. Slide, twist, flip, and turn these triangles to create an identical appearance.

The five congruent triangle theorems are therefore SSS, SAS, AAS, HL, and ASA.

Given,

Two triangles,

ΔRTV and ΔRTS,

RT = RT                                      (Side)    [Common side]

∠RTV = ∠RTS                            (Angle)    [Both are 90°]

VT = TS                                      (Side)   [As T is the mid - point of VS ]

Using SAS, property of triangle congruency,

ΔRTV ≅ ΔRTS

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The balance after 9 years is $1139.94 rounded to the nearest cent.

The formula to use in this case is A = P(1 + r)^nt, where A is the balance (final amount), P is the principal (starting amount), r is the interest rate expressed as a decimal, n is the number of times per year that the interest is compounded, and t is the time in years.

Given the information in the problem, we know that:

P = $800.00 (the principal or starting amount)

r = 0.04 (the interest rate as a decimal)

n = 1 (the interest is compounded annually)

t = 9 (the number of years)

Plugging these values into the formula, we get:

A = $800.00(1 + 0.04)^9

To solve for A, we need to calculate (1 + 0.04)^9

=1.04^9

=1.041.041.041.041.041.041.041.041.04

=1.424928

A = $800.00*1.424928

A = $1139.94

So the balance after 9 years is $1139.94 rounded to the nearest cent.

Therefore, The balance after 9 years is $1139.94 rounded to the nearest cent.

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A = $800.00(1 + 0.04)^9

To solve for A, we need to calculate (1 + 0.04)^9

=1.04^9

=1.041.041.041.041.041.041.041.041.04

=1.424928

A = $800.00*1.424928

A = $1139.94