Answer:
11.26
Step-by-step explanation:
pH = - log(H+ concentration)
[H^+] = 5.5 * 10^(-12)
pH = - log(5.5*10^-12)
pH = - (-11.26)
pH = 11.26
<h3>
Answer: C) 6 units</h3>
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Explanation:
Let's find the area of the hexagon. It's composed of two identical (aka congruent) trapezoids.
Each trapezoid has two parallel bases of 4+4 = 8 and 5 units. The height is 3. The area of one trapezoid is
area = height(base1+base2)/2
area = 3*(8+5)/2
area = 19.5
which doubles to 2*19.5 = 39 to represent the area of the entire hexagon
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The volume of any prism is found through this formula
volume = (area of base)*(height of prism)
We just found the area of the base to be 39. The height is unknown, so we'll call it h. The volume is given to be 234.
We end up with this equation
234 = 39h
which solves to h = 6 after dividing both sides by 39. This prism has a height of 6 units.
Answer:
20
Step-by-step explanation:
isisisisisisisisisisid
Answer:
-8x + 12
General Formulas and Concepts:
<u>Pre-Algebra</u>
Step-by-step explanation:
<u>Step 1: Define expression</u>
2(-4x + 6)
<u>Step 2: Expand</u>
- Distribute 2: -8x + 12
In this problem, it is given that the greater number is represented by x. With this, the smaller number which is 9 less than the greater number may be represented by x - 9. The product of the two numbers is 713 and may be expressed as
(x)(x -9) = 713
The equation above is the answer to the problem.
