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The number 90 is spelled ninety. Some people mistakenly spell it ninty, dropping the "e," but this spelling is incorrect.

An fifty-fifty number, 90 is as well a unitary perfect number, semiperfect number, pronic number, harshad number, and Perrin number. The numbers 1, 2, 3, 5, 6, nine, 10, 15, 18, xxx, 45 and 90 are all factors of 90.

The number ninety is important throughout the earth of sports, ranging from field regulations to jersey numbers. In Major League Baseball, each base of operations is ninety feet away from the other, significant the infield is a perfect square of 90 feet on each side. Professional soccer matches are 90 minutes long and divided into two 45-infinitesimal halves. In the NFL, 2002 Defensive Rookie of the Year and seven-time Pro Bowler Julius Peppers is i of the most notable players to ever wear the number 90 on his uniform. In NASCAR, drivers Dick Brooks and Jody Ridley were two of the nearly famous drivers of the number 90 car.

The Number xc in Sports

On the periodic tabular array, thorium (Th) is assigned the number xc. Information technology's a radioactive metal that was discovered in 1828 and was starting time used to create a gas mantle.

The Number 90 in Geometry

In geometry, a right angle is exactly 90 degrees. A right-angled triangle is when a triangle has one angle that is a right angle or 90 degrees. If all of a triangle's angles are less than xc degrees, it'south considered an acute triangle. If one angle of a triangle is larger than ninety degrees, it'south considered an obtuse triangle.

The Number 90 in Geography

The breadth for both the North Pole and Due south Pole is ninety degrees. To telephone call Turkey internationally, one must first dial +90. In the United States, Interstate 90 is the longest interstate highway in the state. It runs beyond the northern part of the country from Seattle to Boston. It also runs through major cities, like Chicago, Cleveland and Buffalo, and 13 states.

The Number xc in Organized religion

The number 90 is mentioned at least five times in the Christian Bible. Luke i:56 mentions that Mary stayed with Elizabeth for 3 months or xc days before she gave nativity to John the Baptist. In the Jewish Torah, it'southward mentioned that Abraham is 90 and 9 years old at the time of his circumcision. Chapter 90 of the Qur'an is called Al-Balad.

The Number 90 in Health

The number 90 plays an of import function in blood pressure readings. A systolic number (the top number) below ninety is considered depression blood pressure, while a diastolic number (the bottom number) to a higher place ninety is considered loftier blood pressure level.

Famous People Who Lived to Age 90

British Prime Minister Winston Churchill died at age 90 in 1965. Authors Laura Ingalls Wilder and Upton Sinclair also died at age 90. Other famous people who lived to this age include Herbert Hoover, Florence Nightingale, Colonel Harland Sanders, Clara Barton, Yogi Berra, Chuck Berry, George Martin, Marlene Dietrich, Paul Harvey, Don Rickles, Jack Klugman, and Richard Attenborough.