X^2 - 2x - 8 = 0
(x - 4)(x + 2) = 0
x = 4 or x = -2
The positive root is x = 4
The statement 'Exploring the relationship between the material in a rock sample and its hardness' correctly describes an experimental investigation (Option C).
<h3>What is an experimental investigation?</h3>
An experimental investigation is defined as a procedure used in the scientific method to test an explanation or hypothesis, which can be confirmed or rejected.
In conclusion, the statement 'Exploring the relationship between the material in a rock sample and its hardness' correctly describes an experimental investigation (Option C).
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Answer:
Adenine pairs with Thymine or Uracil, Cytosine pairs with Gaunine
Explanation:
In DNA it's Adenine and Thymine but once DNA is transferred to RNA during transcription, Thymine turns into Uracil. Cytosine and Gaunine stay the same throughout the process.
(type of food), and both the number and percentage of the total food items eaten by each type of bird. Create a bar graph of percent food eaten with 36 bars (a bar for each of the six species in environment 1, env. 2, etc.) using a program like Excel. Label your graph, and color code the bars for emphasis. Include a legend which indicates the color of each species. Try this pre-built Excel table to enter and graph your data...... I hope this gives an idea or all you were looking for. Take care.