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Snezhnost [94]
3 years ago
7

Ravi can type 6 words in 4 seconds. how many words can she type in 10 seconds.

Mathematics
1 answer:
Alik [6]3 years ago
4 0
If in four seconds, she can type six words, then we can guess that in eight seconds (4x2) she can type twelve words (6x2). Now, thats only for eight seconds, and we need two more to make ten. In four seconds, she types six words, so we need only two seconds, which would be half of six (3). And the 12+3 gives us 15 words in ten seconds. Sorry if its wrong, but hope i helped somehow :)
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Janet researcher compares the math placement scores of college applicants who have, or have not taken a special college preparat
riadik2000 [5.3K]

Answer:

Step-by-step explanation:

Independent Variable (IV):  Special college preparation program

How will you describe the IV: Independent variable or known as manipulated variable is a variable where the researcher purposely manipulate the variable to see how it affect the results of the experiment.

Dependent variables (DV): Math placement scores of college applicants

How will you measure the DV: DV can be measured by recording the math placement scores of each applicants who have or have not taken the special college preparation program.

Explanation: In this case, the researcher wants to see how taking special college preparation program (IV) can affect the math placement scores of the applicants (DV). Explanation: In this case, the researcher wants to see how taking special college preparation program (IV) can affect the math placement scores of the applicants (DV).

Hypothesis:

If the applicants take the special college preparation program, the applicants will have higher math placement scores compared to the one who have do not take the program.

8 0
3 years ago
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stellarik [79]
C on that one which is the correct answer
5 0
3 years ago
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Which of the following is the correct equation for the distance formula for the points (x1, y1) and (x2,y2)?
svp [43]

Answer:

  A. D=sqrt( (x2-x1)^2+(y2-y1)^2 )

Step-by-step explanation:

The distance between two points is the root of the sum of the squares of the differences in their corresponding coordinates. The equation of choice A is the usual formulation.

__

<em>Comment on answer choices</em>

Because the square of a number is the same as the square of its opposite, the formula in choice D is also correct.

4 0
3 years ago
What is the simplest radical form of 45?
Hitman42 [59]
For this question I'm just going to use / as a square root sign because I don't know how to do it on a computer. Anyways...

So you have /45

Now you have to find a factor that is also a perfect square which is 9 (because 9x5=45)

So you now have /9x5

Since 9 is a perfect square (/9=3)

You can re write it is 3/5 which is the answer
4 0
3 years ago
(6.x² + 7x)+(5 – 2x² + 9x)<br> I really need help
Eduardwww [97]

4x ^{2}  + 16x + 5

7 0
2 years ago
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