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3241004551 [841]
3 years ago
13

An education researcher is interested in comparing the learning outcomes of students who are taught a lesson using five differen

t teaching techniques. There are 75 students in the school who can participate in the experiment. Using a table of random digits, the researcher will randomly place the students into five equally sized treatment groups suitable for comparison.
Which number range would be needed to label the students correctly?

0–4
1–5
00–75
01–75
Mathematics
1 answer:
VARVARA [1.3K]3 years ago
3 0
He 01-75 is the answer believe me cause 1
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Can yall help me out
Nastasia [14]

Answer:

Question 1 (1 point)

1. An object has a mass of 25g and a volume of 5ml

a

10

b

8

c

5

d

7

Question 2 (1 point)

2. An object has a mass of 30g and a volume of15ml. What is the density?

a

10

b

2

c

3

d

5

Question 3 (1 point)

3. An object has a mass of 200g and a volume of 100ml. What is the density?

a

2

b

4

c

6

d

8

Question 4 (1 point)

4. An object has a mass of 17g and a volume of 2ml. What is the density?

a

2.4

b

2

c

8

d

8.5

Question 5 (1 point)

5. An object has a mass of 20g and a volume of 5ml. What is the density?

a

2

b

4

c

10

d

2.5

Question 6 (1 point)

6. An object has a mass of 75g and a volume of 75ml. What is the density?

a

6

b

1

c

7

d

8

Question 7 (1 point)

7. An object has a volume of 100ml and a mass of 2oo ml. What is the density?

a

0.5

b

1

c

4

d

2.5

Question 8 (1 point)

8. An object has a volume of 5ml and a mass of 650 g. What is the density?

a

110

b

120

c

130

d

200

Question 9 (1 point)

9. An object has a mass of 15g and a volume of 5ml. What is the density?

a

2.5

b

7

c

3

d

2.56

Question 10 (1 point)

10. An object has a mass of 13g and a volume of 2ml. What is the density?

a

6.5

b

3.7

c

4

d

Step-by-step explanation:

7 0
3 years ago
Solve the right angle trig problem. round to the nearest tenth.
Orlov [11]

Answer:

x ≈ 16.5

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Geometry</u>

  • [Right Triangles Only] SOHCAHTOA
  • [Right Triangles Only] cos∅ = adjacent over hypotenuse

Step-by-step explanation:

<u>Step 1: Define</u>

We are given a right triangle. We can use trig to find the missing side length.

<u>Step 2: Identify Variables</u>

<em>POV from the angle measure</em>

Angle = 38°

Adjacent Leg = <em>x</em>

Hypotenuse = 21

<u>Step 3: Solve for </u><em><u>x</u></em>

  1. Substitute [cosine]:                    cos38° = x/21
  2. Isolate <em>x</em>:                                     21cos38° = x
  3. Rewrite:                                      x = 21cos38°
  4. Evaluate:                                     x = 16.5482
  5. Round:                                        x ≈ 16.5
7 0
3 years ago
Evaluate the expression (ab)^2for a = 4 and b = 3.
nasty-shy [4]

Answer:

144

Step-by-step explanation:

Plug in a and b

In this case a=4, b=3

(ab)^2

( (4)(3) )^2

(12)^2

12x12

144

If this helps please mark as brainliest

3 0
3 years ago
Read 2 more answers
What are the zeros for the function
Greeley [361]

The zeroes of the function are x = -3, \ \ x =2\sqrt{ 3}i,  \ \ x =-2\sqrt{ 3}i.

Solution:

Given function:

f(x)=x^{3}+3 x^{2}+12 x+36

<u>To find the zeros of the function:</u>

⇒ f(x) = 0

\Rightarrow x^{3}+3 x^{2}+12 x+36=0

\Rightarrow (x^{3}+3 x^{2})+(12 x+36)=0

Take x² as common in first bracket and take 12 as common in 2nd bracket.

\Rightarrow x^2(x+3 )+12( x+3)=0

Now, take common term (x + 3) outside.

\Rightarrow (x+3 ) (x^2+12)=0

<em>Using zero factor principle, If ab = 0 then a = 0 or b = 0.</em>

x+3=0,  \ \ x^2+12=0

x = –3

x^2+12=0

x² = –12

x² = 2² × 3 × –1

Taking square root on both sides, we get

\sqrt{x^2} =\pm\sqrt{2^2\times 3\times -1}

x =\pm2\sqrt{ 3\times -1}

we know that \sqrt{-1} =i.

x =\pm2\sqrt{ 3}i

x =2\sqrt{ 3}i,  \ \ x =-2\sqrt{ 3}i

Hence the zeroes of the function are x = -3, \ \ x =2\sqrt{ 3}i,  \ \ x =-2\sqrt{ 3}i.

7 0
3 years ago
I just need help typing it out
Lena [83]
Ok so basically what u need to do is
7 0
3 years ago
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