Based on geological studies done on land in East Texas, a petroleum compond no oil is 26%. probability of finding high-quality oil is 31%, medium-quality oil is 43%, and soil test (since Since drilling can be expensive, the petroleum company also plans on doing a soil test (sinee certain soil types are more apt to detect the presence and quality of oil). For example, the petroleum company knows that in 13% of high-quality oil finds, 9% of medium-quality oil finds, and 4% of no oil finds, the soil is Type A. So, for this East Texas land dium-quality oil is 43%, and no oil is 26%
1. Find the probability that high-quality oil is found given the soil was not Type A.
2. Find the probability the soil was not Type A or no oil is found.
3. Find the probability oil is found given the soil was Type A.

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99

i would say c

step-by-step explanation:

the answer is a) a healthy economy because it results from a steady rise in demand.