Answer:
= 7.50* 
Explanation:
The birthday of the husband, wife, and daughter is an independent event that won't influence each other probability. Then, to find the probability you need to multiply each chance of these events.
Everyone has 1 birthday out of 1 year and every nonleap year has 365 days. So, the chance for having same birthday is 1/365. We need all three to have the same birthday, so we can pick one person's birthday and then calculate the chance that two others have that birthday too.
In another word, just calculate the chance that wife and daughter(2 people) have the same birthday as the husband. The calculation will be:
1 * 
* = = 7.50*
Its bases can be joined together in any order like the letters of the alphabet can be strung to form different words.
The correct answer is a - silicon dioxide.
Diatoms are single celled algae. They have a silica - based cell wall called a frustule, which gives each diatom a particular shape.
Diatoms exist as separate single cells although some may be found in groups or colonies. The ones found in colonies create very pretty forms: leaf shaped, oval , star and even like a period.
Outer shells of diatoms are quite valuable. They are used in industry in the manufacture of toothpaste to give it grit.
A reflex, or reflex action, is an involuntary and nearly instantaneous movement in response to a stimulus. ... The reflex is then an automatic response to a stimulus that does not receive or need conscious thought.
