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ss7ja [257]
3 years ago
14

Which of the following characteristics of experiments are not also characteristics of surveys? Check all that apply.

Mathematics
2 answers:
mamaluj [8]3 years ago
7 0
<span>The following characteristics of experiments are not also characteristics of surveys:
- The first one is </span><span>B. The study compares two or more treatments (possibly including "no treatment").
- The other one is </span><span>D. The study involves one or more treatment groups and a control group.</span>
Kobotan [32]3 years ago
4 0

Answer:

B and D

Step-by-step explanation:

Surveys are only tested with one group

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Ali was asked to simplify the expression 3(x - 6) + (4x + 12) - 6x. His work is shown below.
liraira [26]

Answer:

Step 2 is wrong.

It should be 3x – <u>18</u> + 4x + 12 – 6x

Explanation:

3(x – 6) + (4x + 12) – 6x →

3x – 18 + 4x + 12 – 6x →

(3x + 4x – 6x) + (-18 + 12) →

x – 6

6 0
3 years ago
If country A has 161,500 million more computers than country B and the total number of computers for both countries is 321,050 m
Vladimir [108]

Answer:

b has 79,775 million

a has 241,275 million

Step-by-step explanation:

a has more than b

b+161,500 is a

b=b

b+b+161,500=321,050

2b=321,050-161,500

2b=159,550

b=159,550/2

b=79,775

a=b+161,500

a=79,775+161,500

a=241,275

6 0
3 years ago
1. Jin bought 3 small candles and 1 medium candle for $3.85. Trish bought 4 small candles and 5 medium candles for $10.45. Write
Ivanshal [37]
Hi, thank you for posting your question here at Brainly.

Jin: 3 small candles and 1 medium candle
3s + 1m = 3.85 <-- equation 1

Trish: 4 small candles and 5 medium candles
4s + 5m = 10.45 <-- equation 2

Solving the system of equations,

s = $0.8/small candle
m = $1.45/medium candle
8 0
4 years ago
What’s the radius of center (-2,1) and contains the point (2,-1)
solniwko [45]
<h2>Radius of a Circle Given Center and Point</h2>

To find the radius of a circle when we're given the coordinates of its center and a point it contains, we can use the following formula for distance:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2

  • (x_1,y_1) is one point and (x_2,y_2) is another

<h2>Solving the Question</h2>

We're given:

  • Center: (-2,1)
  • Point: (2,-1)

Plug these given points into the formula for distance:

d=\sqrt{(2-(-2))^2+(-1-1)^2}\\d=\sqrt{(2+2)^2+(-1-1)^2}\\d=\sqrt{(4)^2+(-2)^2}\\d=\sqrt{16+4}\\d=\sqrt{20}\\d\approx4.47

<h2>Answer</h2>

Therefore, the radius of the circle is \sqrt{20} units, or approximately 4.47 units.

8 0
3 years ago
May I please receive help?
QveST [7]

Answer:

a = 19.6 (rounded to the nearest tenth)

Step-by-step explanation:

a^2 + b^2 = c^2

Hypotenuse - 35 m, Legs - 29 m, x

a^2 +29^2 = 35^2

a^2 + 841 = 1225

Subtract 841 from both sides

a^2 = 384

Square root both sides

√a^2 = √384

a = 19.595

8 0
3 years ago
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