The Option A best explains the dual experiments: "In the experimental group, a chosen variable is altered in a known way. In the control group, that chosen variable is not altered so a comparison can be made."
<h3>What is experimental design?</h3>
- The process of deciding which variables to use in an experiment to test a particular hypothesis is called experimental design.
- To properly collect data and evaluate the hypothesis, the experimental design method is used.
Now,
- A specified variable is changed in the experimental group in a well-known fashion.
- That selected variable is left unaltered in the control group so that comparisons can be conducted.
- Control variables are variables that are utilized in an experiment to serve as a baseline against which the data from the experimental variables are gathered and evaluated (which is why the other answers are incorrect).
- In the experimental group, it is advisable to modify just one variable at a time so that any differences from the control group may be quickly linked to the one variable that was altered.
Hence, amongst all the given options, The Option A best explains the dual experiments: "In the experimental group, a chosen variable is altered in a known way. In the control group, that chosen variable is not altered so a comparison can be made."
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Answer: 9/7
Step-by-step explanation:
Answer:
3 and 63
Step-by-step explanation:
(1) x = 2y
(2) x + 4 = 3y + 1
subtitute (1) to (2)
2y + 4 = 3y + 1 |subtract 4 from both sides
2y = 3y - 3 |subtract 3y from both sides
-y = -3 |change the signs
y = 3
subtitute the value of y to (1)
x = 2 · 3
x = 6
Answer: x = 6 and y = 3.
Answer:
Slope is -3
y-intercept is -3 and equation is y=-3x-3
