PLEASE HELP!!!!

Quadrilateral ABCD is similar to quadrilateral EFGH. What is the value for x, the length
of side CD?
A-10
B-16
C-14
D-18

Hey there!

(4x - 6)(x + 6y)

= (4x - 6)(1x + 6y)

= 4x(1x) + 4x(6y) - 6(1x) - 6(6y)

= 4x^2 + 24xy - 6x - 36y

Therefore, your answer is:

4x^2 + 24xy - 6x - 36y

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

Answer:

ok, and?

Step-by-step explanation:

The probability of a particular event occurring is

d. conditional probability.

d. conditional probability.

Conditional probability is defined as the probability of an event occurring given that another event has occurred.

It is the probability of one event happening, given that we already know that another event has happened.

This type of probability is used when there is some additional information available that affects the likelihood of the event occurring.

For example, let's say we have a deck of cards with 52 cards in total, including 13 hearts. If we draw a card at random from the deck, the probability of getting a heart is 13/52 or 1/4.

However, if we know that the first card drawn was a heart and not replaced, the probability of drawing another heart from the deck will change because there are now only 12 hearts left out of 51 cards.

The probability of drawing another heart in this case will be 12/51, which is a conditional probability.

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Answer:

Step-by-step explanation:

Givens

Time 1 = 11.74

Time 2 = 11.26

Time 3 = 12.12           Add

Solution

11.74 + 11.26 + 12.12 =

Total Time = 35.12

35.12 miles is the total number of minutes that it took krissy to run these three miles.

What is a simple definition of time?

The measured or measurable period during which an action, process, or condition exists or continues : duration. b : a nonspatial continuum that is measured in terms of events which succeed one another from past through present to future.

Krissy ran three miles one morning she ran the first mile in time 1 = 11.74

Krissy ran three miles one morning she ran the first mile in time 2 = 11.26

Krissy ran three miles one morning she ran the first mile in time 3 = 12.12          

To get total time , we have to add all the time 1,2,3

Total time = Time1 + Time2 + Time3

                  = 11.74 + 11.26 + 12.12

Total Time =  35.12 miles

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The significance level is the key indicator of whether or not a hypothesis can be supported. (option c)

In statistical analysis, there are several key indicators that are used to determine whether a hypothesis can be supported. One of these indicators is the significance level, which is denoted by the symbol alpha (α).

Another key indicator is the critical value, which is a value that is determined from a statistical distribution and is used to determine whether the observed data is statistically significant.

The test compares the observed frequencies of the categories to the expected frequencies, assuming that there is no association between the variables. The degrees of freedom refer to the number of categories minus one.

Therefore, to answer the original question, option (c)

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Answer:

circle

Step-by-step explanation:

the answer is circle!!!

The diagonal cross-section of a basketball  is Circle.

When a plane cuts a sphere from any point on it, we get a circle. The size of the cross section may vary depending on the point of intersection of plane and sphere. If the plane passed through the center of sphere, then it divides the sphere into two equal parts (i.e. hemisphere).

According to the question

The diagonal cross-section of a basketball

as basketball is sphere in shape

And , The diagonal cross-section of a sphere  is Circle.

Hence, The diagonal cross-section of a basketball  is Circle.

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By subtracting the quotient of U and V from eight the equation which we got would be (8V-U)/V.

The quotient is basically the result of a division.

Given ,

Subtract the quotient of U and v from eight So Let's assume U=9 and V =7

Now , we have to subtract 8 from the quotient of 9.7.

So ,

= 8-9/7

Divide and multiply 8 by 7

= (56/7) -(9/7)

= 47/7

Now make the equation in the u/v form ,

= 8-U/V

= (8V-U)/V

Hence, the equation would be (8V-U)/V.

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The system of equations are solved and the value of x and y are 6/5 and -14/5 respectively

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

y = x - 4   be equation (1)

y = 6x - 10   be equation (2)

On simplifying , we get

x - 4 = 6x - 10

Subtracting x on both sides , we get

5x - 10 = -4

Adding 10 on both sides , we get

5x = 10 - 4

5x = 6

Divide by 5 on both sides , we get

x = 6/5

So , the value of y = ( 6/5 ) - 4

y = -14/5

Hence , the value of x and y are 6/5 and -14/5 respectively and the equations is solved

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Answer:

The tank is currently 40% (40 percent) full.

Step-by-step explanation:

We can find this by dividing the current fullness (648 gal) by the full tank (1620 gal).

648 / 1620 = 0.4

0.4 = 40%

How do we know to divide 648 by 1620 and not the other way around?

We know this because that we want to know what percent of the full tank is currently full. It's something that you just need to get used to, once you do enough of these types of problems, I'm sure you'll get the hang of it!

Hope I could help you! If I did, it would mean a lot of you could give braniest or even just a thanks :) If I didn't quite answer your question, please let me know and I'll try my best to assist you!

Answer:

36

Step-by-step explanation:

4x +x = 180
5x=180
x=180/5
x=36

Answer:

A. 1.5 cm by 2.5 cm

B. 27 cm by 45 cm

C. 9 cm by 15 cm

D. 30 cm by 50 cm

Step-by-step explanation:

The dimensions of the original painting = 12 cm by 20 cm painting

Hence, the proportion is:

12/20 = 0.6

Hence, we compare the options given in the question.

A. 1.5 cm by 2.5 cm

= 1.5/2.5 = 0.6 , option A is correct

B. 27 cm by 45 cm

27cm/45 cm = 0.6 Option B is correct

C. 9 cm by 15 cm

9cm/15cm = 0.6 , Option C is correct

D. 30 cm by 50 cm

30 cm /50 cm = 0.6 Option D is correct

E. 6 cm by 14 cm

6cm/14 cm = 0.4285714286

Option E is not correct

Therefore, Options A to D are the correct options

The square mil area for a 2 inch wide by 1/4 inch thick copper busbar is 500 square mils.

To find the square mil area for a 2 inch wide by 1/4 inch thick copper busbar, we need to multiply the width and thickness of the busbar in mils.

1 inch = 1000 mils

So, the width of the busbar in mils = 2 inches x 1000 mils/inch = 2000 mils

And, the thickness of the busbar in mils = 1/4 inch x 1000 mils/inch = 250 mils

Therefore, the square mil area of the copper busbar = width x thickness = 2000 mils x 250 mils = 500,000 square mils.

Hence, the square mil area for a 2 inch wide by 1/4 inch thick copper busbar is 500,000 square mils.

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Answer:

144%

Step-by-step explanation:

I hope this helps you

Answer: 8in. 10in. 17in.

Step-by-step explanation:

The sum of the lengths of sides a, c must be greater than the length of the remaining side b.

There are 3 tolls where Stephanie pays $ 4.05.

The distance between two points is the length of the path connecting them.

Here,

Distance covered by Stephanie = 12 1/4 miles

                                                     = 12.25 miles

Distance between two toll tax = 3 1/2 miles

                                                   = 3.5 miles

Number of Tolls = Total distance covered / Distance between two tolls

                            = 12.25 / 3.5

                            = 3.5

                            ≈ 3 tolls.

Cost of 1 toll = $ 1.35

Total amount paid on toll = 3 X 1.35

                                          = $ 4.05

Thus, there are 3 tolls where Stephanie pays $ 4.05.

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Answer:

2 is the answer

Step-by-step explanation:

the square root of 4 is 2... right?

To rewrite the integral ∫(2x)\(e^{4x^{2} }\)dx using integration by parts, we'll consider the function f(x) = (2x) and g'(x) = \(e^{4x^{2} }\).

Integration by parts states that ∫u dv = uv - ∫v du, where u and v are functions of x.

Let's assign:

u = (2x) => du = 2 dx

dv = \(e^{4x^{2} }\) dx => v = ∫\(e^{4x^{2} }\) dx

To evaluate the integral of v, we need to use a technique called the error function (erf). The integral cannot be expressed in terms of elementary functions. Hence, we'll express the integral as follows:

∫\(e^{4x^{2} }\) dx = √(π/4) × erf(2x)

Now, we can rewrite the integral using integration by parts:

∫(2x)\(e^{4x^{2} }\) dx = uv - ∫v du

= (2x) × (√(π/4) × erf(2x)) - ∫√(π/4) × erf(2x) × 2 dx

= (2x) × (√(π/4) × erf(2x)) - 2√(π/4) × ∫erf(2x) dx

The integral ∫erf(2x) dx can be further simplified using substitution. Let's assign z = 2x, which implies dz = 2 dx. Substituting these values, we get:

∫erf(2x) dx = ∫erf(z) (dz/2) = (1/2) ∫erf(z) dz

Therefore, the final expression becomes:

∫(2x)\(e^{4x^{2} }\) dx = (2x) × (√(π/4) × erf(2x)) - √(π/2) × ∫erf(z) dz

Please note that the integral involving the error function cannot be expressed in terms of elementary functions and requires numerical or tabulated methods for evaluation.

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There are 69300 possible ways of selecting six bottles randomly with two bottles of each variety.

Probability is a branch of mathematics concerned with numerical descriptions of how likely an event is to occur or how likely a statement is to be true. In the given question, we have to select 6 bottles randomly with two bottles of each variety,

= ¹⁰C₂× ⁸C₂ × ¹¹C₂

¹⁰C₂= [1 × 2 × 3 × 4 × 5 × 6 × 7 × 8 × 9 × 10] / [(1 × 2)(1 × 2 × 3 × 4 × 5 × 6 × 7 × 8)]

= 90/2

= 45

Similarly,  ⁸C₂  = 28

In the same way ¹¹C₂= 55

= ¹⁰C₂× ⁸C₂× ¹¹C₂

= 45 × 28 × 55

= 69300

Therefore, there are 69300 possible ways of selecting 6 bottles with two bottles of each variety.

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The quantity of purple marbles that Leslie has would be = 32 purple marbles.

The number of bags of marbles that Leslie has = 6 bags.

The quantity of marbles that is found in each bag = 16 marbles.

Therefore the total number of marbles = 6× 16 =96 marbles.

The fraction of purple marbles that Leslie has = 1/3 of 96

Therefore the total number of purple marbles the Leslie have = 1/3× 96 = 32

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Complete question:

Leslie has 6 bags of marbles. Each bag has 16 marbles. If ⅓ of the marbles are purple, how many purple marbles does Leslie have?

The solution to the differential equation with the given initial conditions is:

y = 2x^3 - 3x^2 + 3x

To solve the differential equation xy′′ + 2y′ = 12x^2, we first divide both sides by x:

y′′ + (2/x)y′ = 12x

This is a second-order linear differential equation with variable coefficients. To solve it, we can use the method of undetermined coefficients. We first find the general solution to the homogeneous equation:

y′′ + (2/x)y′ = 0

We assume a solution of the form y = x^r, where r is a constant. Then, we have:

y′ = rx^(r-1)

y′′ = r(r-1)x^(r-2)

Substituting these expressions into the differential equation, we get:

r(r-1)x^(r-2) + 2rx^(r-2) = 0

Factoring out x^(r-2), we get:

x^(r-2)(r^2 + r) = 0

The characteristic equation is therefore r^2 + r = 0, which has roots r = 0 and r = -1. The general solution to the homogeneous equation is therefore:

y_h = c1 + c2/x

where c1 and c2 are constants.

To find a particular solution to the nonhomogeneous equation, we assume a solution of the form y_p = Ax^3 + Bx^2 + Cx + D, where A, B, C, and D are constants to be determined. Then, we have:

y′ = 3Ax^2 + 2Bx + C

y′′ = 6Ax + 2B

Substituting these expressions into the differential equation, we get:

6Ax^2 + 2Bx + 2(x(3Ax^2 + 2Bx + C)/x) = 12x^2

Simplifying and equating coefficients, we get:

6A = 12

6A + 4B = 0

2B + 2C = 0

Solving these equations, we get:

A = 2

B = -3

C = 3

Therefore, a particular solution to the nonhomogeneous equation is:

y_p = 2x^3 - 3x^2 + 3x

The general solution to the differential equation is therefore:

y = y_h + y_p = c1 + c2/x + 2x^3 - 3x^2 + 3x

To find the values of c1 and c2, we use the initial conditions y′(0) = 1 and y(0) = 2. From the expression for y′, we have:

y′(0) = 3C = 1

Therefore, C = 1/3. From the expression for y, we have:

y(0) = c1

Therefore, c1 = 2. To find c2, we differentiate the expression for y with respect to x:

y′ = -c2/x^2 + 6x^2 - 6x + 1/3

Using the initial condition y′(0) = 1, we get:

1 = 6

This is a contradiction, which means that there is no value of c2 that satisfies the initial conditions. Therefore, the solution to the differential equation with the given initial conditions is:

y = 2x^3 - 3x^2 + 3x

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Answer:

3

Step-by-step explanation:

Find the prime factorization of 9

9 = 3 × 3

Find the prime factorization of 33

33 = 3 × 11

To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 3

Answer:

Yes

Step-by-step explanation:

750 mL is equivalent to 25.36 oz.

When measuring liquids, the metric system and the US customary system are commonly used. In the metric system, the standard unit of measurement for liquids is milliliters (mL) and in the US customary system, it's ounces (oz).

To convert between these units, you can use a conversion factor.

One way to convert mL to oz is to use the conversion factor of 1 oz = 29.5735 mL. To find the number of ounces in 750 mL, you can use this conversion factor to set up an equation:

750 mL = x oz

Where x is the number of ounces you want to find. To solve for x, you can divide both sides of the equation by the conversion factor:

x = 750 mL / 29.5735 mL/oz

x = 25.36 oz

It's important to note that this is an approximation and for more accurate measurements, you should use an online calculator or consult a chart.

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Answer:

the answer is 3,5 for A' and 5,3 A''

Step-by-step explanation:

when you reflect across the x axis the formula becomes x, -y its already negative and 2 negatives equals a positive then when you rotate it 90 degrees  you make the formula y, x and that's how you get 5, 3

also kind of weird I had this exact same question like even the same typo you from cisd

If the histogram shows a bell-shaped curve and the normality test (if performed) supports the normality assumption, it appears safe to assume that the normality condition is satisfied for the wood pieces prepared for the lab session, considering them as an SRS of all similar pieces of Douglas fir.

To determine if the normality condition is satisfied, you can follow these steps:

1. Organize the data: Collect the measurements for the characteristics of the wood pieces in your sample (such as density, strength, etc.) and organize them in a list or a table.

2. Create a frequency distribution: Calculate the frequencies of the different measurements and arrange them in a frequency distribution table.

3. Plot a histogram: Using the frequency distribution, create a histogram to visually represent the data. The x-axis represents the measurements and the y-axis represents the frequency.

4. Evaluate the shape of the histogram: Examine the shape of the histogram to determine if it resembles a normal distribution. A normal distribution is characterized by a bell-shaped curve, which is symmetrical around the mean value.

5. Conduct a normality test (optional): If you want to statistically confirm the normality of the data, you can perform a normality test, such as the Shapiro-Wilk test or the Kolmogorov-Smirnov test.

For the wood pieces manufactured for the lab session, using them as an SRS of all comparable pieces of Douglas fir, it is acceptable to infer that the normality criterion is satisfied if the histogram displays a bell-shaped curve and the normality test (if performed) confirms the normality assumption.

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The condition that is not needed for the inference in this case is D) The graph of the sample data is symmetric with no outliers.

While it is generally desirable to have a symmetric distribution without outliers for making statistical inferences, it is not a necessary condition. The central limit theorem states that as the sample size increases, the sampling distribution of the sample mean approaches a normal distribution, regardless of the shape of the population distribution, as long as certain conditions are met (such as random sampling and independence of observations). Therefore, the shape of the sample data distribution and the presence of outliers do not affect the validity of constructing a confidence interval based on the sample mean.

However, the condition that is not needed for the inference is D) The graph of the sample data is symmetric with no outliers. While a symmetric distribution without outliers can make it easier to construct a confidence interval, it is not a necessary condition for inference. The other conditions listed (random sampling, independence, sample size less than 10% of population size, and a large enough sample size) are all necessary for inference.

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The surface area of a cylinder with a base diameter of 4 yd and a height of 9 yd is 113.04 yd².

A cylinder is a three-dimensional solid object with two bases that are identically circular and are connected by a curving surface that is located at a specific height from the center.

Examples of cylinders are toilet paper rolls and cold beverage cans.

The volume of a cylinder is πr²h.

Curved surface area = 2πrh.

Total surface area = 2πr(h + r).

We know, The surface area of a cylinder is 2πrh, where 'h' is the height and 'r' is the diameter.

So, The radius is = (4/2) = 2 yd.

Therefore, The surface area of the cylinder is.

= 2π×2×9 yd².

= 36π yd².

= 113.04 yd².

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Daniella and her friends collected a total of 44 shells.

What is linear equation ?

Linear equation can be defined as equation in which highest degree is one.

Given ,

Daniella and her 10 friends are collecting shells on the beach to make crafts.

After they have collected the shells and put them in a pile, they split them evenly among the group. Each person gets 4 shells.

The correct equation for this problem is:

s = 11 x 4

where s is the total number of shells collected.

Simplifying this equation, we have:

s = 44

Therefore, they collected a total of 44 shells.

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