Assume that a crucial machine part has a 5% rate of failure, based on company data. Since the part is so crucial, the company installs a second independent system with the same probability of failure as the first. What is the probability both systems will fail?

0.25%

Step-by-step explanation:

In order to calculate the probability of two separate events happening at the exact same time, you simply have to take the first probability and multiply it by the second one. Since both of these parts have the same probability of failure, we first need to turn that percentage into a decimal by dividing it by 100.

5% / 100 = 0.05

Now we multiply both probabilities together

0.05 * 0.05 = 0.0025 ... multiply by 100 to get percentage value

0.0025 * 100 = 0.25%

Finally, we can see that there is a 0.25% chance that both parts will fail at the same time.

answer: a rhombus has two lines of symmetry that run through one vertex to the one directly across it. unlike a square, planes through the center of each edge of a rhombus do not yield mirrored sides.

step-by-step explanation:

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.