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guajiro [1.7K]
3 years ago
8

Which option below best describes the difference between an experiment and an observational study?

Mathematics
1 answer:
noname [10]3 years ago
5 0

An observation study is where nothing changes and you record what is seen. An experimental study you have a control group and a testable group.

The answer would be: .C. The groups in an experiment are chosen at random, but not in an observational study.

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11. If a square has an area of 121 square meters, what is the side length? A. 60.5 m B. 12 m C. 11 m D. 484 m​
butalik [34]

Answc

Step-by-step explanation:

answer= C. 11m

3 0
3 years ago
What is the percent of incerse between 10 and 24
lisabon 2012 [21]
To work out the percent increase, we can use the following equation:

24 / 10 = 2.4
2.4 x 100 = 240%

Hope I helped!
6 0
3 years ago
Solve the system of equations below by graphing them with a pencil and paper. Enter your answer as an ordered pair.
sergejj [24]
Y = 2x - 3 . . . (1)
y = -2x + 5 . . . (2)
Equating (1) and (2),
2x - 3 = -2x + 5
2x + 2x = 5 + 3
4x = 8
x = 8/4 = 2
x = 2
y = 2(2) - 3 = 4 - 3 = 1
y = 1

Solution = (2, 1)
6 0
3 years ago
Read 2 more answers
The histogram displays how many students are in each classroom during homeroom. What percentage of classrooms have 25 students o
Lelechka [254]

Answer:

its 40% but since it's not there it could be 45%

Step-by-step explanation:

hope this helps

3 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST <br> in detail, what would you do in order to graph y = 3x -5
Hunter-Best [27]

So first, you need to identify the parts of this equation.

3x is the slope of the line, which is \frac{3}{1}.

-5 is the y-intercept. or the part of the line that touches the y-axis.

The first thing you want to do is plot the y-intercept. SO, go to the y-axis and find -5. Plot your point there.

Now, use the slope \frac{3}{1} to find your next plot. Since slope is \frac{rise}{run}, you go up three, and over to the right one.

Now, draw a line connecting the dots. Your slope should be positive and look like > /

~theLocoCoco

5 0
3 years ago
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