<h3>Answer:</h3>
AC ∈ {4, 5, 6, 7}
<h3>Explanation:</h3>
When two sides of a triangle are specified, the allowable values for the length of the third side are between the sum and difference of the given sides.
In ∆ACD, sides DA and CD are both given as length 4. Thus the possible range of values for side AC is 0 – 8. The extremes of this range result in ∆ACD having zero area, so we assume they are not of interest.
In ∆ACB, sides AB and BC are given as having lengths 3 and 6. Thus the possible range of values for side AC is 3 – 9. The extremes of this range result in ∆ACB having zero area, so we assume they are not of interest.
The integers that are in both ranges and that give triangles with non-zero area are ...
... AC ∈ {4, 5, 6, 7}
Answer:
The economic domain incorporates cultural norms that directly impact sustainable development. The environmental domain focuses on the protection and preservation of natural and artificial resources
Explanation:
When the PH is 7.0, the hydronium Ion Concentration is gotten as; [H3O+] = 1 × 10^(-7) M
<h3>How to find the Concentration of an Ion? </h3>
The formula to find the pH of an Ion concentration is;
pH = - log [H3O+]
where;
[H3O+] is the molar concentration of hydronium ion.
We are told that the pH is 8.0. Thus;
8.0 = - log [H3O+]
10^(-8) = [H3O+]
[H3O+] = 1 × 10^(-8) M
Thus, when pH = 7.0, we have;
7.0 = - log [H3O+]
[H3O+] = 1 × 10^(-7) M
Complete question is;
When the fish-tank water has a pH of 8.0, the hydronium ion concentration is 1.0 × 10-8 mole per liter. What is the hydronium ion concentration when the water has a pH of 7.0?
Read more about Ion Concentration at; brainly.com/question/3997048
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Answer:
inprovisation
Explanation:
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