Which of the following is a true statement concerning the use of a placebo?

A.

B.

C.

D.

Answer:

Step-by-step explanation:

a and d

Answer:

Step-by-step explanation:

well if he road 12miles in 55 mines all u have to do is divide is 55 to 12.

Answer:

She would have $31.55 left.

Step-by-step explanation:

25.75 + 37.80 =63.55, as both totals from the two weeks, then she spends 32 dollars, then 63.55 - 32 = 31.55

Answer:

she would have $31.55  

Step-by-step explanation:

25.75 + 37.80 =63.55, as both totals from the two weeks, then she spends 32 dollars, then 63.55 - 32 = 31.55

Answer:

20% of 160 is 32

Step-by-step explanation:

Answer: sample mean

Hope this helps.

Answer:

22

Step-by-step explanation:

One fifth = 1/5

4 4/10 = 4 + 4/10 = 40/10 + 4/10 = 44/10

then:

(44/10) / (1/5) = (44*5) / (10*1) = 220/10 = 22

Answer:

j+47=55

Step-by-step explanation:

it says the sum (of) emphasis on the of. of means to put together so j and 47 put together or added and is, is another word for equals so j and 47 out together equals 55

Answer:

y = 2x + 7

Step-by-step explanation:

y - (-1) = 2(x - (-4))

y + 1 = 2x + 8

y = 2x + 7

Step-by-step explanation:

(3,9) (-1,5) (3,-3).. All these points can be seen on the graph.. They are not all on the given line but they're on the graph

Answer:

I said D

Step-by-step explanation:

The equivalent expression of the expression[tex]\sqrt[4]{\frac{16x^{11}y^8}{81x^7y^6}}[/tex] is  [tex]\frac 23x\sqrt{y[/tex]

The expression is given as:

[tex]\sqrt[4]{\frac{16x^{11}y^8}{81x^7y^6}}[/tex]

Take the 4th root of 16 and 81

[tex]\frac 23\sqrt[4]{\frac{x^{11}y^8}{x^7y^6}}[/tex]

Apply the law of indices

[tex]\frac 23\sqrt[4]{x^{11 - 7}y^{8 - 6}}[/tex]

Evaluate the difference

[tex]\frac 23\sqrt[4]{x^{4}y^{2}}[/tex]

Take the 4th root of x^4

[tex]\frac 23x\sqrt[4]{y^{2}}[/tex]

Take the 4th root of y^2

[tex]\frac 23x\sqrt{y[/tex]

Hence, the equivalent expression of [tex]\sqrt[4]{\frac{16x^{11}y^8}{81x^7y^6}}[/tex] is  [tex]\frac 23x\sqrt{y[/tex]

Read more about equivalent expression at:

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Answer:

m∠TRI  = 43

Step-by-step explanation:

m∠TRI +  m∠IRB = m∠TRB

3x - 5 + x + 27 = 86

3x + x - 5 + 27 = 86   {Combine like terms}

     4x  + 22    = 86       {Subtract 22 from both sides}

               4x = 86 - 22

                4x = 64           {Divide both sides by 4}

                  x = 64/4

                 x = 16

m∠TRI = 3x - 5

           = 3*16 - 5

          = 48 - 5

          = 43

Answer:

2. The sum of the measures of their interior angles is 360º.

3. They are all polygons with four sides.

5. A square is a rectangle and a parallelogram, but not a trapezoid.

Step-by-step explanation:

The statements b,c, and e about quadrilaterals are true

A quadrilateral is a closed figure with four sides. The total of the internal angle measurements is 360°. They are all four-sided polygons. A square is not a trapezoid, but it is a rectangle and a parallelogram.

The statements about quadrilaterals are true;

b. The sum of the measures of their interior angles is 360º.

c. They are all polygons with four sides.

d. A square is a rectangle and a parallelogram, but not a trapezoid.

Hence, the statements b,c, and e about quadrilaterals are true

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Answer:

840

Step-by-step explanation:

Given

[tex]DJs = 7[/tex]

[tex]To\ pick = 4[/tex]

Required

Determine the number of rankings

The term "ranking" as used in this question implies permutation and the required is calculated using:

[tex]^nP_r = \frac{n!}{(n-r)!}[/tex]

Where

[tex]n = 7[/tex]

[tex]r = 4[/tex]

So:

[tex]^nP_r = \frac{n!}{(n-r)!}[/tex]

[tex]^7P_4 = \frac{7!}{(7-4)!}[/tex]

[tex]^7P_4 = \frac{7!}{3!}[/tex]

[tex]^7P_4 = \frac{7 * 6 * 5 * 4 * 3!}{3!}[/tex]

[tex]^7P_4 = 7 * 6 * 5 * 4[/tex]

[tex]^7P_4 = 840[/tex]

Hence, number of ranking is 840

The required number of ways is 840.

Important information:

We need to find a number of ways to rank 4 DJs.

It means we need to find the permutation P(7,4).

[tex]P(7,4)=\dfrac{7!}{(7-4)!}[/tex]

[tex]P(7,4)=\dfrac{7\times 6\times 5\times 4\times 3!}{3!}[/tex]

[tex]P(7,4)=7\times 6\times 5\times 4[/tex]

[tex]P(7,4)=840[/tex]

Therefore, the required number of ways is 840.

Find out more about 'Permutation' here:

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Answer:

4.5

Step-by-step explanation:

I hope this helps!

Answer:

352 x 21 = 7,392..  is your letter “C” missing the 7 in front?

Step-by-step explanation:

   352

  x  21

  ——-

    352

+ 704

————

  7392

Answer:

20

Step-by-step explanation:

Answer:

552

Step-by-step explanation:

23×4=92

3×2=6

6×92=552

IF I'M WRONG I'M SORRYYYY :V

Answer:

Step-by-step explanation:

Answer:

1.242

Please let me know if I'm wrong!

Answer:

1.242

Step-by-step explanation:

You just multiply them together

Answer:

165

Step-by-step explanation:

7*25-10

175-10

165

Answer:

It is 21:31

Step-by-step explanation

27:45, 3:5, and 9:15 are all equivalent to 15:25. You can check this by dividing or multiplying 15:25 by a certain number.

Step-by-step explanation:

Answer:

A and B

Step-by-step explanation:

B)The top is cut off but if it says 3/5x then that is the answer.... 4/5x-1/5x is 3/5x and the +3 stays the same

Answer:

170

Step-by-step explanation:

Answer:

It's - 17x trust me it's right

Answer:

10 members

Step-by-step explanation:

3 6/8 leftover = [tex]\frac{24+6}{8}\\[/tex] = 30/8 = 10 . 3/8

Answer: it will takethe student  7 weeks

Step-by-step explanation: the student already has $475 so if we take the number 7 and multiply it by 125 we get 875. take the 875 and add the $475. 7x125=875. 875+475 = 1,350.

Answer:

36:90

Step-by-step explanation:

trust me and make me brainliest please!!

Answer:

Trump=90, Joel=36

Step-by-step explanation:

2x+5x=126

7x=126

x=18

18 times 2=36

18 times 5=90

Answer:

umm I don't see a question can you show it so I can solve it

Answer:

(x2−5)8(x+1)−16=1

How do we solve for all values of x?

I think we can equate the bases to 1 in order to get

1×1=1

x2−5=1,x2−5=−1

or

x+1=1,x+1=−1

Step-by-step explanation: