Researchers at a veterinary hospital wish to test a new drug developed for treating degenerative joint disease (DJD) in dogs. A group of 30 Great Danes, 50 Labradors, and 40 Mastiffs is to be used. The researchers randomly assign 15 of the Great Danes, 25 of the Labradors, and 20 of the Mastiffs to the traditional drug for treatment. The remaining dogs are assigned to the new drug. The major reason for separate assignment for each breed of dog is that
A) This is a large study with 120 dogs.
B) This design uses matched pairs to detect the new-drug effect.
C) The new drug may affect Great Danes, Labradors, and Mastiffs differently.
D) The new drug may affect dogs with DJD differently than dogs without DJD.
E) There must be an equal number of dogs in each of the two treatment groups.

Answer:

B

Step-by-step explanation:

So for the first square we Have ab*a

When you multiply variables then you add up their powers so b^1a^1+a^1= (a^2)(b^1)

Second box is -3 * a which is equal to -3a

third box is 2b * ab = 2ab^2

fourth box is -3 *2b = -6b

Answer:

Step-by-step explanation:

H-23=53

H=76

Answer:

H - 23 = 53

+23. +23

H = 76

Step-by-step explanation:

Add 23 to both sides with that h = 76

Answer:

-10/7

Step-by-step explanation:

y=kx+2 (-7, 12)

12=k(-7)+2

12=-7k+2

-7k=12-2

-7k=10

k=10/-7

Answer:

2/6

Step-by-step explanation:

Since you already have 6 socks in total and you already know 4 of the color socks are either green or blue, all you would have to do is 6-4 to equal 2 and therefor making 2/6

Hope this helps :)

Answer:

im very late but 2/6

Step-by-step explanation:

Answer:

Number of dogs (x) | Amount charged to walk a dog (y)

1 | 20

2 | 40

3 | 60

4 | 80

5 | 100

6 | 120

7 | 140

8 | 160

Step-by-step explanation:

Charge for walking a dog = $20 per dog

Number of dogs = x

Amount charged to walk a dog in a day = y

Unit rate = 20

Equation to represent this is: y = 20x

Let's use this to form a table for walking 1 to 8 dogs:

For 1 dog (x):

y = 20(1) = $20

For 2 dogs (x):

y = 20(2) = $40

For 3 dogs(x):

y = 20(3) = $60

For 4 dogs:

y = 20(4) = $80

And so on till we get to tl8 dogs.

This, we should have the following table:

Number of dogs (x) | Amount charged to walk a dog (y)

1 | 20

2 | 40

3 | 60

4 | 80

5 | 100

6 | 120

7 | 140

8 | 160

Answer:

706.858347058

Step-by-step explanation:

equation- 4pi(r)^2

Answer:

15 in2

Step-by-step explanation:

3.14 * 15 m=15 in^2

33.85 or 32.75 sorry if I am wrong

Step-by-step explanation:

for this one you have you multiply 17 by itself like this 17x17=289 but you also have to do it with the 28 to like this 28x28=784, now what you do it add up the 289+784=1,073 then you square root 1,073 which gives you 32.75 round it to the nearest tenth of needed so your will be between 33.85 or 32.75

Answer:

11 dimes 20 nickels

Step-by-step explanation:

Only combo that makes $2.10

Step-by-step explanation:

[tex] {x}^{2} = {7}^{2} + {7}^{2} \\ {x}^{2} = 98 \\ x = \sqrt{98} = 7 \sqrt{2} [/tex]

Answer:

B. srvut

Step-by-step explanation:

To name a polygon, or any shape, remember that you must name it so that each angle is in order. Basically, do not go from angle s to angle u, and instead go to angle stu or srvu.

Hope this helps :)

Answer:

13 and 14

Step-by-step explanation:

From the inequality

x + 2 x + 6 < 50

we work out the answer for x isolating it on one side of the inequality as shown below

3 x + 6 < 50

3 x < 50 - 6

3 x < 44

x < 44/3  ≅ 14.6666...

Therefore, select from the set the numbers:  13 and 14.

Answer:

Step-by-step explanation:

Solve for x=0 and x=1

y(0)=2(3^0)=2(1)=2 so (0,2) is a point.

y(1)=2(3^1)=2(3)=6 so (1,6) is a point.

Only graph B has those two points.

Step-by-step explanation:

1:the range

2:positive interval

3:increasing interval

4:maximum point

5:domain

6:decreasing intveral

7: negative interval

Answer:

As per the graph we have:

1: the range

2: positive interval

3: increasing interval

4: maximum point

5: domain

6: decreasing interval

7:  negative interval

Answer:

Step-by-step explanation:

ax² + bx + c = y

Plug in data points to get a system of equations in three unknowns.

(0.5,18): 0.25a + 0.5b + c = 18

(1,24): a + b + c = 24

(1.5,22): 2.25a + 1.5b + c = 22

Solving the system:  a = -16, b = 36, c = 4

y = -16x² + 36x + 4

When x = 1.7, y = -16·1.7² + 36·1.7 + 4 = 18.96 ft

Answer:

the weight of one circle is 6.25

Step-by-step explanation:

25 divided by 4=6.25

Check:

6.25x4=25

4w=25 is the equation which represents the hanger and weight of one circle is 6.25 units.

Two or more expressions with an Equal sign is called as Equation.

A hanger stays balanced when the weights on both sides are equal.

The hanger has four circles on left hand side and value 25 on the right hand side

By equating both we get

w+w+w+w=25

4w=25

4w=25 is an equation representing this hanger.

Now let us find the weight of one circle

Divide both sides by 4

w=25/4

w=6.25

Hence, 4w=25 is the equation which represents the hanger and weight of one circle is 6.25 units.

To learn more on Equation:

https://brainly.com/question/10413253

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Answer:

The correct answer is C. 27 ft, 45 ft, 63 ft.

Step-by-step explanation:

Given that the ratio of the measures of the sides of a triangle is 3: 5: 7, and its perimeter is 135 feet, in order to find the measure of each side of the triangle, the following calculation must be performed:

3 + 5 + 7 = 15

135/15 = 9

9 x 3 = 27

9 x 5 = 45

9 x 7 = 63

Therefore, the measures of the sides of the triangle are 27 ft, 45 ft, and 63 ft.

Answer:

1hr 44 mins

Step-by-step explanation:

Answer:

2 hours and 24 minutes

Step-by-step explanation:

4.38 - 6.22 = 1.84 (the one would be and hour and the 84 would be minutes)

84 - 60 = 24 (60 minutes equal an hour)

2 hours and 24 minutes would be your answer

Answer:

2x2-12x+3

Step-by-step explanation:

(x2-7x+4)-(-x2+5x+1)

x2-7x+4+x2-5x-1

2x2-12x+3

Answer:

ℎ=7

(Hope this helps!! Btw, I am the first to answer.)

Answer:

The side of the hypotenuse is 12.233 centimeters.

Step-by-step explanation:

The triangle presented in the figure represents a right triangle, we know an angle and a leg adjacent to such angle and we need to determine the length of the hypotenuse, which is found by this trigonometric relation:

[tex]\cos 56^{\circ} = \frac{7.4\,cm}{x}[/tex] (1)

Where [tex]x[/tex] is the length of the hypotenuse, measured in centimeters.

Then, we clear the variable within (1):

[tex]x = \frac{7.4\,cm}{\cos 56^{\circ}}[/tex]

[tex]x = 13.233\,cm[/tex]

The side of the hypotenuse is 12.233 centimeters.

Answer:

62.5

Step-by-step explanation:

Step-by-step explanation:

Slope is the ratio of the vertical and horizontal distances between two points on a line.

Y-intercept is a point at which a line crosses the y-axis of a Cartesian grid.

Hope it will help :)

Answer:

20 inches

Step-by-step explanation:

Answer:

25 , 29, 85 , 89 , 145 , 42.

Step-by-step explanation:

The first five terms will be 25, 29, 85, 89, 145.

A sequence is defined as an arrangement of numbers in a particular order.

Given that, in a sequence, each term after the first is the sum of the squares of the digits of the previous term.

The first term is 25

Therefore, according to question,

2nd term = 2²+5² = 4+25 = 29

3rd term = 2²+9² = 4+81 = 85

4th term = 8²+5² = 64+25 = 89

5th term = 8²+9² = 64+81 = 145

Hence, The first five terms will be 25, 29, 85, 89, 145.

For more references on sequences, click;

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Answer:

a...

associative property

Step-by-step explanation:

trust me

Answer:

it is A.

Step-by-step explanation:

hope this helps!