Answer:
0.128 is the probability that the third hole drilled is the first to yield a productive well.
Step-by-step explanation:
We are given the following information in the question:
The probability that he is successful on a given trial is 0.2
p = 0.2
q = 1 - p = 0.8
We define the geometric probability as:
For this we have x = 3, putting the values we have:
0.128 is the probability that the third hole drilled is the first to yield a productive well.
<span>Since each population is represented by the area then the area is equal to the population of whatever city. So the are of the Texas circle is 28,240,245 and that rounded of to the nearest tenth is 28,240,250. To find the radius of whatever city you must use the formula for find area of a circle which is A = πr^2, where r is the radius. Make the r the subject of the formula, to do that you divide both sides of the equation by π, this will make the π on the right side cancel out and the final equation will be
A/Ď€ = r^2, then square root both sides to get rid of the squared exponent on the r then the final equation will be sqr(A/Ď€) = r. So you replace the A with the area or the population of the city want in this case Texas, you will end up with this equation, sqr(28,240,250/Ď€) = r. The radius of the Texas circle is 2998.19 but that rounded to the nearest tenth is 3,000.</span>
Answer:
x=9
Step-by-step explanation:
4x+2=7x-25(being vertically opposite angles)
2+25=7x-4x
27=3x
27/3=x
9=x
We can divide both 35 and 100 to get 7 and 20, so A is equivalent to 7/20 instead of 7/30. A is the correct answer.