Answer:
1/12
Step-by-step explanation:
Let’s list out cases:
1+1:
Probability of getting 1 and 1 is (1/6)^2 = 1/36
1+2:
Probabilty of getting 1 and 2 is (1/6)^2 = 1/36 and getting 2 and 1 is (1/6)^2 = 1/36.
That is all of the cases because 1+3 and 2+2 are equal to 4. Summing it up, we get: 3(1/36) = 1/12
The pH is the measure of hydrogen ion concentration in a solution. The hydrogen ion concentration at pH 1.25 is .
<h3>How to calculate hydrogen concentration?</h3>
The pH is the negative logarithmic value of the hydrogen ion concentration in the sample.
The pH can be expressed as:
The hydrogen ion concentration can be given as:
The given pH is 1.25 The hydrogen ion concentration is given as:
The hydrogen ion concentration in the solution is .
Learn more about pH, here:
brainly.com/question/491373
I found 1 and 2. x equals -11 and h=-3.85.
Answer:
(1) 2290.2 yd²
(2) 804.2 cm²
(3) 237.8 in²
(4) 1006.6 ft²
Step-by-step explanation:
(1) Area (A) = πr²
A = πr² ....................... Equation 1
Given: r = 27 yd,
Substitute into equation 1
A = (π)×27²
A = 2290.2 yd²
(2) A = πr²................ Equation 2
Given: r = 16 cm
Substitute into equation 2
A = 16²(π)
A = 804.2 cm²
(3) A = πr²................... Equation 3
Given: r = 8.7 in
Substitute into equation 3
A = 8.7²(π)
A = 237.8 in²
(4) A = πr².............. Equation 4
Given: 17.9 ft
Substitute into equation 4
A = 17.9²(π)
A = 1006.6 ft²