Calculate the following.
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True. Data Envelopment Analysis (DEA) is best used in an environment of low diverges and high complexity. In such situations, DEA can effectively analyze and compare the efficiency of decision-making units, even when dealing with multiple inputs and outputs.

Data Envelopment Analysis (DEA) is a method used to measure the efficiency of decision-making units. It works by analyzing a set of inputs and outputs to determine the relative efficiency of each unit. DEA is best suited for situations where there is low diverges among the units being analyzed, meaning they are all operating under similar conditions. Additionally, DEA is most effective in situations of high complexity, where there are multiple inputs and outputs that need to be considered. Therefore, the statement that DEA is best used in an environment of low divergence and high complexity is true.

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We are required to know if the point (4,10) is a solution of the equation

5x + 10y = 120

If a point is a solution of the given equation, then when we replace x = 4 and y = 10 in the equation, the condition must stand, that is:

5(4) + 10(10) should be equal to 120

Evaluating the operations, we have:

20 + 100 = 120

Note the result of the operations equals the right side of the equation, thus we conclude the point (4,10) is a solution of 5x + 10y = 120

Answer:

Step-by-step explanation:

43

The solutions to the equation 3x^2 - 9x - 12 = 0 are x = 4 and x = -1.

To solve the quadratic equation 3x^2 - 9x - 12 = 0, we can use the quadratic formula:

x = (-b ± √(b^2 - 4ac)) / (2a),

where a, b, and c are the coefficients of the quadratic equation.

In this case, a = 3, b = -9, and c = -12. Substituting these values into the quadratic formula, we have:

x = (-(-9) ± √((-9)^2 - 4 * 3 * (-12))) / (2 * 3)

= (9 ± √(81 + 144)) / 6

= (9 ± √(225)) / 6

= (9 ± 15) / 6.

We have two possible solutions:

For the positive root:

x = (9 + 15) / 6

= 24 / 6

= 4.

For the negative root:

x = (9 - 15) / 6

= -6 / 6

= -1.

The solutions to the equation 3x^2 - 9x - 12 = 0 are x = 4 and x = -1.

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Hence, the deal of  $\(479\) is best unit price per blender.

What is the equation?

The definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.

Here given that,

Oliver is buying equipment for his restaurant. He can buy two blenders for $\(396\) or three blenders for $\(479\).

So,

Oliver buying two blenders at  $\(396\) so the cost of one blender is

i.e., \(\frac{396}{2}=198\)$

Oliver buying two blenders at  $\(479\)  so the cost of three blenders is

i.e., \(\frac{479}{3}=159\)$

Hence, the deal of  $\(479\) is best unit price per blender.

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Answer:

24 cubic units

Answer:

76.275

Step-by-step explanation:

First - the entire circles area is 78.54. \(\pi r^{2}\) with r being 5

6 triangles of that size could fit in that circle.

A=3\(\sqrt{3}\)/(2) * a2

The area of that would equal 64.95

78.54-64.95 = 13.59

then divide that number by 6

which is 2.265.

Take that number from the original 78.54

78.54-2.265 = 76.275

63x+54b

3ac+bc

2xy+11zy

Answer:

thx

Step-by-step explanation:

srdhtfgjbnxdtcfjghvbnszxdfcghv bn

Answer:

256 cm^2

Step-by-step explanation:

All of the sides of the square are equal so to calculate the area we do side times side.

16*16 = 256

cm^2 is the unit for this question

Answer:

$42

Step-by-step explanation:

Answer:144 degrees

288 degrees

Step-by-step explanation:

Answer:

144 degrees

288 degrees

Step-by-step explanation:

Edge2020

Answer:

1,854

Step-by-step explanation:

103 = width

18 = length

103*18

Answer:

1854 roses

Step-by-step explanation:

103 x 18  = 1854

Answer:

45/9=__

Step-by-step explanation:

Please mark me brainliest

t = 8

It will take Mrs. Reed 8 hours to catch up to Mr. Reed.

To find out how many hours it will take Mrs. Reed to catch up to Mr. Reed, we can set up an equation based on their relative speeds.

Let's assume that Mrs. Reed catches up to Mr. Reed after t hours.

In those t hours, Mr. Reed will have traveled a distance of 50t miles (since he averages 50 mph).

Mrs. Reed, on the other hand, will have traveled a distance of 80(t-3) miles (since she averages 80 mph and leaves 3 hours later).

For Mrs. Reed to catch up to Mr. Reed, their distances traveled must be equal. Therefore, we can set up the equation:

50t = 80(t-3)

Let's solve for t:

50t = 80t - 240

240 = 80t - 50t

240 = 30t

t = 240/30

t = 8

Therefore, it will take Mrs. Reed 8 hours to catch up to Mr. Reed.

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Answer:

96. (Proportions are down below)

Step-by-step explanation:

Since the tickets are being doubled, just double the amount paid or divide 48 by 4 and multiply it by 8.

48 ÷ 4 = 12

12 × 8 = 96

If you'd like to write it as a proportion, here:

4/48 = 8/96

Answer:

The cost would be $ 96

Explanation:

It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d .Based on the info. given, 1 ticket would be 12 dollars. If so it would original be, 1:12. ( if I'm wrong, I'll try better next time.

The probability that three out of the five employees chosen will be women is approximately 0.36

The probability of three out of five randomly chosen employees being women, we can use the concept of combinations.

The total number of ways to choose five employees out of the 16 is given by the combination formula:

C(16, 5) = 16! / (5! × (16-5)!)

= 4368

Now, we need to calculate the number of ways to choose three women from the 8 available, multiplied by the number of ways to choose two men from the remaining 8 employees:

C(8, 3) × C(8, 2) = (8! / (3! × (8-3)!) × (8! / (2! × (8-2)!))

= 56 × 28

= 1568

Therefore, the probability of choosing three women and two men is:

P(3 women and 2 men) = 1568 / 4368 ≈ 0.359

So, the probability that three out of the five employees chosen will be women is approximately 0.36.

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(i) When testing whether girls who attended girls-only high schools do better in math, it is important to control for various factors that could potentially influence math scores.

Some factors to consider are:

(ii) The equation relating the math score (score) to girlhs (dummy variable indicating girls-only high school attendance) and other factors can be written as:

score = β0 + β1 * girlhs + β2 * socioeconomic status + β3 * prior academic performance + β4 * school quality + β5 * peer effects + β6 * teacher quality + β7 * access to resources + ε

This equation represents the structural relationship between the math score and the factors being controlled for. The coefficients β1, β2, β3, β4, β5, β6, and β7 represent the respective effects of girlhs and the other factors on the math score.

(iii) Parental support and motivation, which are unmeasured factors, may be correlated with girlhs. This is because parents who choose to send their daughters to girls-only high schools might have certain preferences or beliefs regarding education, which could include providing higher levels of support and motivation. However, without directly measuring parental support and motivation, it is difficult to establish a definitive correlation.

(iv) To ensure that numghs (the number of girls-only high schools within a 20-mile radius of a girl's home) is a valid instrumental variable (IV) for girlhs, certain assumptions are needed:

(v) If the coefficient estimate on the chosen IV numghs is negative and statistically significant in the reduced form estimation, it suggests a strong relationship between the instrumental variable and the attendance at girls-only high schools. This provides some confidence in the validity of the IV. However, the decision to proceed with IV estimation should also consider other factors such as the strength of the instruments, the overall model fit, and the robustness of the results to alternative specifications.

It is important to carefully evaluate the assumptions and limitations of the IV estimation approach before drawing conclusions in math.

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The integral of (42³ - 2r + 7) dz is equal to (42³ - 2r + 7)z + C.

To integrate the function (42³ - 2r + 7) dz, we treat r as a constant and integrate with respect to z. The integral of a constant with respect to z is simply the constant multiplied by z:

∫ (42³ - 2r + 7) dz = (42³ - 2r + 7)z + C

where C is the constant of integration.

Note: The integral of a constant term (such as 7) with respect to any variable is simply the constant multiplied by the variable. In this case, the variable is z.

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Hello,

Ali is right, Khamis is wrong. Why because Khamis forgot to put the negative sign in front of 5b, it should be wrote -5b in the second line and not 5b.

And then Khamis should have divided -5b by -5b.

Good Luck

2. The area of the cabin's window is 196 square inches.

3. The area of the doghouse is  32.5 square ft.

4. The farmer should purchase 2 begs of soil.

5. The artist needs 161.5 square in material to make the kite.

What is a trapezoid?

A polygon with only one set of parallel sides is called a trapezoid. The parallel bases of a trapezoid are another name for these parallel sides. Trapezoids have two additional sides that are not parallel and are referred to as their legs.

Trapezoids are defined differently by different people. A trapezoid can have one and only one pair of parallel sides, according to one school of mathematics, while another contends that a trapezoid can have multiple pairs of parallel sides. If we take into account the second definition, then a parallelogram is also a trapezoid by that definition. However, the first definition excludes parallelograms from the definition of a trapezoid since it is one of the quadrilateral types that we have already mentioned.

2. The formula for the area of a trapezoid is 1/2 × (sum of parallel side) × height.

The length of one parallel side is 10 inches. The length of the other parallel side is (10+4+4) inches = 18 inches.

The height of the trapezoid is 14 inches

The area of the trapezoid is 1/2 ×(10 + 18) × 14

= 196 square inches.

3.

The formula for the area of a trapezoid is 1/2 × (sum of parallel side) × height.

The length of one parallel side is 5 ft. The length of the other parallel side is (5+3) ft = 8 ft.

The height of the trapezoid is 5 ft.

The area of the trapezoid is 1/2 ×(5 + 8) × 5

= 32.5 square ft.

4.

The area of a parallelogram is the product of height and base.

The length of the base is (2.5 yards + 6.5 yard) = 9 yards

The height of the parallelogram is 6 yards.

The area of the parallelogram is 9 yards × 6 yards

= 54 square yards

Each beg can cover 40 square yards field.

The number of begs that the farmer need is 56/40 = 1.4  ≈2

5.

The area of the kite is half of the product of diagonals.

The length of diagonals are (8.5 in + 8.5 in) = 17 in and (6 in  + 13 in) = 19 in

The area of the kite is (17×19)/2 = 161.5 square in.

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Answer:

- 2a - 6

Step-by-step explanation:

9 - 4(- a + 9) + 3(7 - 2a) ← distribute parenthesis

= 9 + 4a - 36 + 21 - 6a ← collect like terms

= - 2a - 6

1 hour and 12 minutes is the time that will it take her to develop 8 rolls of film.

According to the question,

Tara develops 2 rolls of film in about 18 minutes.

Tara develops 1 roll of film in about  = (18 ÷2) minutes

                                                                = 9 minutes (using division)

Tara develops 8 rolls of film in about = ( 8 × 9) minutes

                                                                   = 72 minutes

we know that, 1 hour = 60minutes

Tara can develop 8 rolls of film in about = (72 ÷ 60)

                                                                   = 1 hour 12 minutes

So, Tara can develop 8 rolls of film in about 1 hour and 12 minutes.

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In this exercise we have to calculate the value of the water depth, so we have: d=5.5Cos(12t)+6

A periodic wave is a wave with a repeating continuous pattern that determines its wavelength and frequency

Putting together some information given in the statement we have:

Knowing that the formula will be given by an equation similar to:

\(d=acos(bt)+k\)

Where:

The amplitude difference is given by:

\(8.75-3.25=5.5\ m\)

The mean depth is:

\(k=\dfrac{(3.25+8.75)}{2}=6\ m\)

Then writing the equation with;

\(d=acos(bt)+k\\\\d=5.5cos(12t)+6\)

Hence the value of water depth will be d=5.5Cos(12t)+6

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Answer:

around 165-176

is it a multiple choice answer

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

i need this too so any body that knows it plz help

i am not that good at math but this is the answer i got that changed

12.36 i really really hope it helped ;) have a nice day

Answer:

LoOk At ThE CaLcUlAtOr

Step-by-step explanation:

Fraction form:  1/1616

The value of a is -4 and the value of b is 8.

Given, the straight line L passes through (7a,5) and (3a,3) and an equation of line L is x+by-12 = 0. On solving, we get

Put (7a,5) in x+by-12 = 0, we get

7a+5y-12 = 0 or 7a+5y = 12 ...........(1)

Put (3a,3) in x+by-12 = 0, we get

3a+3y-12 = 0 or a+y = 4 ........(2)

Now, solving equation (1) and (2) in order to conclude the value of a and b

So, multiply equation (1) by 1 and equation (2) by 5 and subtract them, we get

7a+5y = 12

5a+5y = 20

on subtracting, we get

7a+5y-5a-5y = 12-20

2a = -8

a = -8/2

⇒a = -4

Now, put value of a in equation (1) in order to get the value of b,

7a+5y = 12 ⇒ 7 x -4+5y = 12

-28+5y = 12

5y = 28+12

5y = 40

y = 40/5

y = 8

∴ The value of a is -4 and the value of b is 8.

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Answer:

33

Step-by-step explanation:

Convert the percentage to a decimal.

55 ÷ 100 = 0.55

Multiply 60 by 0.55

60 × 0.55 = 33

Answer:

33

Step-by-step explanation:

55 x 60 divided by 100

= 33