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lions [1.4K]
2 years ago
8

At city community college, every freshman must take English 101. The English department wants to know whether students who take

this class and their second semester get better grades than students who take the class in the first semester which principle of experimental design can the English department best used to include a variety of students in both the first and second semester treatment groups of the study
Mathematics
1 answer:
vesna_86 [32]2 years ago
8 0

Answer: randomization

Step-by-step explanation: apex

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2x > -6 and x – 4 ≤ 3
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2x > -6

Divide both sides by 2.

x > -3


x - 4 ≤ 3

Add 4 to both sides.

x ≤ 7

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2 years ago
This is my question​
Talja [164]

Answer/Step-by-step explanation:

∆ABC is similar to ∆CDE. Therefore, the ratio of their corresponding sides are proportional.

This,

\frac{DE}{AB} = \frac{DC}{AC}

\frac{4}{3} = \frac{x + 3}{x + 1}

Solve for x

4(x + 1) = 3(x + 3)

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4x + 4 - 4 = 3x + 9 - 4

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4x - 3x = 3x + 5 - 3x

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Use the value of x to find AC and DC

AC = x + 1 = 5 + 1 = 6

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2 years ago
In 1996 the population of Capital City was 7,255,731 and the population of Sprung City was
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The answer is (1) because 7,300,000-3,900,000 is 3,400,000
6 0
3 years ago
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If M (6,8) is the midpoint of line segment AB, and if A has coordinates (2,3) , find the coordinates of B.
sveticcg [70]
Graphing is one way to do the problem.But sometimes, graphing it is hard to do.So here’s an algebraic method.
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Let B have coordinates (x2, y2) in our problem.Then we have that 6 = (2 + x2)/2 and 8 = (3 + y2)/2.
Solving for the coordinates gives x2 = 10, y2 = 13
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Goshia [24]

Answer:

21 cents

Step-by-step explanation:

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