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Elena-2011 [213]
4 years ago
7

teachers for several classes and a district are told to use a new method for teaching reading while all the other classes use tr

aditional method at the end of the year a reading test is administered to see how well the students can read this is an example of what kind of statistical study
Mathematics
2 answers:
algol [13]4 years ago
4 0

Answer:

experiment

Step-by-step explanation:took the test

OLEGan [10]4 years ago
3 0
The <u>correct answer</u> is:

Experiment

Explanation:

In an experiment, one group is given a treatment while at least one other group is not.  After the treatment is finished, the results of the group that receive the treatment are compared with the results of the group (or groups) that do not receive the treatment, to determine if the treatment had any effect on the group.

In this problem, the different groups are the classes.  Some classes use the new method, which is the treatment, while other classes do not.  At the end of the year, the reading results of each class are compared to see if the treatment (new method) had any effect.
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What is the rate of change in the y-values with respect to the x-values?
dybincka [34]

Answer:

The answer to your question is the last option

Step-by-step explanation:

Process

1.- To calculate the rate of change, calculate slope

Formula

             m = (y2 - y1) / (x2 - x1)

x1 = 1           y1 = 1200

x2 = 2         y2 = 2400

2.- Substitution

             m = (2400 - 1200) / (2 - 1)

3.- Simplification

             m = 1200 / 1

4.- Result

             m = 1200 meters / minute

6 0
4 years ago
Let x represent the number of small candle. let y represent the number the number of large candles.
Maru [420]

Answer:

The inequality that models the situation is 2.25x+4.75y \leq 80

Step-by-step explanation:

Let

x ----> represent the number of small candles

y ----> represent the number of large candles

we know that

The inequality that represent this situation is equal to

2.25x+4.75y \leq 80

using a graphing tool

The solution is the shaded triangular area, because the number of candles cannot be a negative number

see the attached figure

8 0
4 years ago
$25; 300% increase. <br><br><br><br><br><br><br>help
aleksandr82 [10.1K]
25×3=75
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5 0
4 years ago
Read 2 more answers
A 0.25 mL sample of water drawn from a 5 liter flask contains 1.25 x 10^8 bacteria. Give the approximate number of bacteria in t
vazorg [7]

Answer:

The number of bacteria in 0.25 mL is 6.25 x 10^3.

Step-by-step explanation:

5 liter flask contains 1.25 x 10^8 bacteria.

So, 1liter flask contains = \frac{1.25 \times 10^8}{5} =2.5\times 10^7

Now

0.25 mL contains = 2.5\times 10^7 \times0.25\times 10^{-3} = 6.25\times 10^3

7 0
3 years ago
Write the 3.777 as a mixed number
Dmitrij [34]
Maybe it’s uhh uhhh 20 feet yuh
6 0
3 years ago
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