PLEASE HELP!!!!!! Determine which of the following sentences and/or graphs represents the proportional relationship described above. See image below.

Answer:

x = 70

Step-by-step explanation:

x% 20 = 14

x / 100 * 20 = 14

x / 5 = 14

x = 14 * 5

A parallelogram is a straightforward quadrilateral with two sets of parallel sides in Euclidean geometry and in the given parallelogram the required value of x is 3 units.

A parallelogram is a straightforward quadrilateral with two sets of parallel sides in Euclidean geometry.

A parallelogram's facing or opposing sides are of equal length, and its opposing angles are of similar size.

In a parallelogram, the diagonals are split in half while the opposite sides are equal.

In a rhombus, all four sides are equal and the diagonals intersect at 90 degrees.

So, a parallelogram's diagonals cut each other in half.

Hence, WC = CY.

This is:

2x + 5 = 3x + 2

Take away 2x from each side:

5 = 3x - 2x + 2

5 = x + 2

Take away from both sides:

5 - 2 = x + 2 - 2

3 = x

Therefore, in the given parallelogram the required value of x is 3 units.

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Correct question:

In quadrilateral WXYZ, WC = 2x + 5 and CY = 3x + 2. What must x equal for quadrilateral WXYZ to be a parallelogram?

Answer:

A

Step-by-step explanation:

A raises blood glucose levels

Answer:

∠ C = 100°

Step-by-step explanation:

since 2 sides of the triangle are congruent then the triangle is isosceles with base angles congruent.

consider the angle inside the triangle to the left of 140°

this angle and 140° are a linear pair and sum to 180°

angle + 140° = 180° ( subtract 140° from both sides )

angle = 40°

then the angle on the left of the triangle = 40° ( base angles congruent )

the sum of the angles in a triangle = 180° , so

∠ C + 40° + 40° = 180°

∠ C + 80° = 180° ( subtract 80° from both sides )

∠ C = 100°

The oil mist detector alarm is arranged to operate at 40% of the lower explosion limit. Therefore, the oil mist detector alarm will operate at 80mg/l.

The lower explosion limit is the minimum concentration of a particular combustible gas or vapor in air to form an explosive mixture. The LEL value is commonly used to help ensure a safe work environment and prevent combustible gas or vapor-related explosions. The oil mist detector is an instrument that detects the presence of oil mist in the air. If the oil mist detector is set too low, it could lead to false alarms. On the other hand, if it is set too high, it could fail to detect oil mist and thereby cause damage to the equipment or even result in explosions. In order to prevent these occurrences, the oil mist detector alarm is arranged to operate at 40% of the lower explosion limit.

Therefore, the oil mist detector alarm will operate at 80mg/l assuming that the lower explosion limit for the main engine is 200mg/l.

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Answer:

h=

−x+3

x

Step-by-step explanation:

hx=−x+3

Step 1: Divide both sides by x.

hx

x

=

−x+3

x

h=

−x+3

x

Answer:

h=

−x+3

x

C). (3, 29) would be your answer.

Explanation?:

Rewrite the equation in vertex form.

y = -3(x - 3)^2 + 29

use the vertex form, y = a(x - h)^2 + k, to determine the values of a, h, and k.

a = -3

h = 3

k = 29

The vertex = (h, k)/(3, 29)

Hope this helps!

Answer:

It would be c

Step-by-step explanation:

The required sample size is equal to 273.

We have given that,

A political candidate has asked you to conduct a poll to determine what percentage of people support her.

We have to determine the If the candidate only wants an 8% margin of error at a 99% confidence level,

p=0.5 (default since no value is given)

q=1-0.5=0.5

margin of error=5%=0.05

z_c=1.65 at 90% confidence.

The margin of error:

\(e= sqrt(p(1-p)/n)*z_c\)

Use the given value in the above formula we get,

0.05=sqrt(0.5*0.5/n)*1.65

n= (0.5*1.65/0.05)^2=272.25

Therefore, The required sample size is equal to 273.

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Answer:

3.75 < n

Step-by-step explanation:

n + 7 < 5n - 8

Add 8 to both sides

n + 7 + 8 < 5n

n  + 15 < 5n

Subtract 'n' from both sides

15 < 5n - n

15 < 4n

Divide both sides by 4

\(\frac{15}{4}\) < n

3.75 < n

We can prove that every graph with an odd number of vertices has at least one vertex whose degree is even by considering the sum of the degrees of all the vertices in the graph.

Let's assume we have a graph G with an odd number of vertices. Suppose all the vertices in G have odd degrees. Since the sum of the degrees of all the vertices in a graph is always even (as each edge contributes to the degree of two vertices), the sum of odd numbers (which represent the degrees in this case) would also be even. However, this contradicts the fact that the sum of the degrees is even, as odd + odd + ... + odd is always odd.

Therefore, our assumption that all vertices in G have odd degrees must be incorrect. At least one vertex in the graph must have an even degree in order to ensure the sum of the degrees is even. This proves that every graph with an odd number of vertices has at least one vertex whose degree is even.

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The Lewis dot structure for BF2 is:

 F     B     F

  \   /    

   B    

  /   \

 F     B     F

In this molecule, there are three atoms (one boron and two fluorine) and a total of 12 valence electrons. Boron is in group 3, so it has 3 valence electrons, while each fluorine atom has 7 valence electrons.

To form the Lewis dot structure, we first place the atoms in a linear arrangement. Each fluorine atom shares one electron with the boron atom, giving a total of two shared electrons (or one bond) between the boron and each fluorine atom. This gives us a total of four electrons (or two bonds) between the boron and the two fluorine atoms.

The remaining four electrons are placed as nonbonding electron pairs around each fluorine atom to satisfy the octet rule. Therefore, there are a total of two bonding domains and two nonbonding electron domains around the boron atom. The electron domain geometry is tetrahedral, and the molecular geometry is linear.

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Answer:

B. \( 11^2 \)

Step-by-step explanation:

\( \frac{ {11}^{6} }{ {11}^{4} } = {11}^{6 - 4} = {11}^{2} \\ \)

The simplified form of the given expression is \(\frac{11^{6} }{11^4}\) will be \(11^2\).

The exponents of a number are defined as the representation of a number that shows how many times a number is multiplied by itself.

The given expression is

\(\frac{11^{6} }{11^4}\)

Therefore, the exponent will subtract,

= \(11 ^{6-4}\)

= \(11^2\)

Thus, the simplified form will be \(11^2\).

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Step-by-step explanation:

well, I see one large rectangle (20×6), and 2 small triangles with their horizontal sides being (20-8-6)/2 = 3 m. and their vertical joined side being 10-6 = 4 m.

the total area is simply the sum of the rectangle and the 2 triangles.

the rectangle is

20×6 = 120 m²

each triangle is

4×3/2 = 2×3 = 6 m²

we have 2 of them, so their combined area is 2×6 = 12 m².

the total area is

120 + 12 = 132 m²

Answer:

a.) An open circle on 4 with a solid line drawn to an open circle on -4.

Explanation:

Open circles are used for signs: < and >

Closed circles are used for signs: ≤ and ≥

Here in the given expression: |x| < 4

[<] sign is used so open circle is used

If |y| < a then -a < y < a

so here, -4 < x < 4

Both circles should be opened, drawn with a solid line from -4 to 4.

\(\textit{surface area of a sphere}\\\\ SA=4\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=9 \end{cases}\implies SA=4\pi (9)^2\implies SA=324\pi\)

Answer:

X = 21 / 4 (21 over 4)

Step-by-step explanation:

First, we combine like terms:

5x−11=x+10

Step 2: Subtract x from both sides.

5x−11−x=x+10−x

4x−11=10

Step 3: Add 11 to both sides.

4x−11+11=10+11

4x=21

Step 4: Divide both sides by 4.

4x/4 = 21/4

x= 21 / 4

Please give me brainliest of this helped you! Thanks!

Answer:

B (8)

Step-by-step explanation:

AB = BC = AC

AB = BC

x+5 = 3x-1

6 = 2x

x = 3

BC = 3x-1 = 3*3 - 1 = 8

The 90% confidence interval for the population mean number of days it takes to find a job using the website's service is approximately 77.09 to 82.91 days.

To calculate a 90% confidence interval for the population mean number of days it takes to find a job using the website's service, follow these steps:

1. Identify the sample mean (X), sample size (n), and population standard deviation (σ). In this case, X = 80 days, n = 32, and σ = 10 days.

2. Determine the desired confidence level. Here, it's 90%.

3. Find the critical value (z) associated with the 90% confidence level. You can look this up in a standard normal distribution table or use a calculator that provides this functionality. For a 90% confidence interval, the critical value is approximately 1.645.

4. Calculate the standard error (SE) by dividing the population standard deviation (σ) by the square root of the sample size (n). In this case, SE = σ/√n = 10/√32 ≈ 1.77.

5. Multiply the critical value (z) by the standard error (SE) to obtain the margin of error (MOE): MOE = z * SE = 1.645 * 1.77 ≈ 2.91.

6. Calculate the lower and upper bounds of the confidence interval by subtracting and adding the margin of error (MOE) from the sample mean (X). In this case, the lower bound = 80 - 2.91 ≈ 77.09, and the upper bound = 80 + 2.91 ≈ 82.91.

Thus, the 90% confidence interval for the population mean number of days it takes to find a job using the website's service is approximately 77.09 to 82.91 days.

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23/60

hope it helps...!!!!

Answer:

That they can mess up the whole house

Step-by-step explanation:

That's all I got, sorry if it's not very helpful.

Answer:

\(here \: \: l + b \: = 20cm \\ perimeter = 2(l + b) \\ = 2 \times 20 = 40cm \\ thank \: you\)

The  two squares of the the product of two consectuitve natural numbers os 1.5 times the square of the lesser number are 2 and 3.

The expression that of the statement that the two squares where the product of two consecutive natural integers is 1.5 times the square of the smaller number can be written  as

x(x+1)=(1.5)(x^2)

we can open the bracket

x^2 +x = 1.5x^2

then we can re arrange

0.5x^2 -x=0

then we can factorize

x(0.5x-1)=0

x=0 or 0.5x=1

x=0 or x=2

Therefore, The number can be 0 and 1 or 2 and 3

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The cοrrect answer is οptiοn B, t-statistic =1.841, p-value= 0.0748 there is nοt suffient evidence tο reject the null hypοthesis.

The null hypοthesis is a sοrt οf suppοsitiοn used in statistical tests, which are fοrmal prοcedures fοr drawing inferences οr taking judgements based οn evidence. Based οn a sample οf the pοpulatiοn, the hypοtheses are suppοsitiοns regarding a statistical mοdel οf the pοpulatiοn. In οrder tο distinguish between statistical nοise and scientific claims, tests, which are fundamental cοmpοnents οf statistical inference, are frequently utilised in the interpretatiοn οf scientific experimental data.

The null hypοthesis is the prοpοsitiοn under cοnsideratiοn in a test οf statistical significance. Tο evaluate the strength οf the evidence cοntradicting the null hypοthesis, the significance test is used. A claim οf "nο effect" οr "nο difference" is the null hypοthesis. Frequently, H0 is used tο represent it. The alternative hypοthesis is the assertiοn being examined in relatiοn tο the null hypοthesis. Included are symbοls H1 and Ha.

Marcellο's Pizza, Mean – 11.25, Varience- 10.1974, Standard deviatiοn – 3.1933, n- 20

Pizza a Gο-Gο,  Mean – 9.6, Varience – 4.4, Standard deviatiοn – 2.0976 , n – 15

H0  - u1=u2 , Ha – u1≠u2

Test Statistics =(11.25-9.6)/ (√ {(3.1933 ×3.1933)÷20}+√{(2.097×2.097)÷15 }

=1.841

P-value = 2p (±≥1.841) ≈0.0748>0.05

Sο there is nοt sufficient evidence tο reject the null hypοthesis.

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True. Regression is commonly used to develop a mathematical model of a process.

Regression analysis is a statistical method used to model the relationship between a dependent variable and one or more independent variables. The goal is to develop a mathematical equation that describes the relationship between the variables and can be used for prediction or inference.

By fitting a regression model to a dataset, we estimate the coefficients of the model that quantitatively describe how the independent variables affect the dependent variable. This process involves finding the best-fitting line or curve that minimizes the differences between the observed data points and the predicted values from the model.

The resulting mathematical model can then be used to make predictions, understand the relationship between variables, identify significant predictors, and assess the statistical significance of the model.

Therefore, regression analysis is indeed carried out to develop a mathematical model of the process under investigation, making the statement true.

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Answer:

784000

Step-by-step explanation:

Given data

Profit =  700000

Let us begin by finding what 12% of  700000 is

=12/100* 700000

=0.12* 700000

=84000

Hence the profit made last years was

=84000+700000

=784000

Answer:

5.25 or 5 1/4

Step-by-step explanation:

-8(0.5x-3)=3

first, just multiply -8 by 0.5x and -8 by -3 and you'll get:

-4x+24=3

next, subtract 24 on both sides, meaning subtract 24 by 24 on the left side and subtract 24 by 3 on the ride side:

-4x=-21

the final thing you have to do is divide -4 on both sides to get the x by itself:

x=5.25 or 5 1/4

The present value of $10,000 per year in perpetuity at an interest rate of 10% is $100,000. Therefore, correct answer will be B.$100,000.

This is because the present value of an annuity, or a series of payments, is equal to the sum of the present value of each payment. In this case, the payment is $10,000 and the interest rate is 10%. Therefore, the present value of each payment is $10,000/(1+0.1)^1, which is $9,090.

Since the payments are perpetual, the present value of the annuity is equal to the present value of each payment multiplied by the number of payments, which is infinite. Therefore, the present value of the annuity is $9,090 multiplied by infinity, which is $100,000.

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Answer:

You use substitution

Step-by-step explanation:

Because you can see that y= both of those answers, you can set them equal to each other, creating the equation 2=x^2-3x-8

You then can use quadratics to solve the equation as follows:

-2 from both sides, 0=x^2-3x-10

Factors of -10 that add up to -3 are -5 and 2 leaving

0=(x-5)(x+2)

The 0 product property tells us that the answer is 5 and -2

The interesting or surprising thing we can learn about converting between improper fractions and mixed numbers is that to know how large or small a fraction formed from mixed number.

A mixed number, or fraction is a number having two parts one is integer (whole number) and other is a proper fraction (having numerator is less than its denominator). An example of a mixed number is \(2\frac{1}{\\ 2} \\ \). An improper fraction is defined when the top number (numerator) is larger than the bottom number (denominator). For example, \( \frac{8}{5} \).

To change an improper fraction to a mixed number follow these steps.

The conversion between improper fractions and mixed numbers or mixed to improper is a best way to be able to understand fractions and recognize how large or small a fraction is.

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