Evelyn Boyed Granville was born May 1, 1924 in Washington D.C. She was the second child and second daughter born to William Boyed and Julia walker Boyed. Her father, William Boyed worked as a custodian in the apartment Evelyn was living in. Her father later on left the family early in her childhood. She and her older sister Doris were by her mother and her mother twin, Louise walker. The period of time was very difficult and was during segregation. Obstacles that Evelyn Boyed Granville had to overcome were decimation. When applying for a teaching position she was laugh at for her application and was not consider for a job because she was black, and was also laugh at not only because of her race but of her gender. Another obstacles Evelyn had to overcome was segregation. Much limitation was place on blacks of doing things. Dunbar high school she attended in Washington D.C was racially segregated. Black students had to stay in certain place, and used different water fountain from white students. Living during that time period could have been difficult because Evelyn Boyed Granville is best known as a distinguished researcher, teacher, and author. She was one of the first women black to receive a doctorate in mathematics at a time when very few of any race considered entering this field. She was led a very fulfilling life and has opened the door for other women to enter the world of mathematics. To discover something brand new in mathematics would be very excited but
...inspirations for Evelyn Boyd Granville.
Granville was born in Washington, D.C., on May 1, 1924. Her father, William Boyd, worked as a custodian in their apartment building; he did not stay with the family, however, and Granville was raised by her mother, Julia Walker Boyd, and her mother's twin sister, Louise Walker, both of whom worked as examiners for the U.S. Bureau of Engraving and Printing. Evelyn Boyd grew up in Washington, D.C. and attended the segregated Dunbar High School (from which she graduated as valedictorian) maintained high academic standards. Several of its faculty held degrees from top colleges, and they encouraged the students to pursue ambitious goals. Fortunately when she was growing up, she never heard the theory that females were not equipped mentally to succeed in mathematics. Granville's mathematics teachers included Ulysses Basset, a Yale graduate, and Mary Cromwell, a University of Pennsylvania graduate; Cromwell's sister, who held a doctorate from Yale, taught in Dunbar's English department. Inspired by her high school teachers and with the encouragement of her family and teachers, Granville entered Smith College with a small partial scholarship from Phi Delta Kappa, a national sorority for black women. During the summers, she returned to Washington to work at the National Bureau of Standards. After her freshman year, she lived in a cooperative house at Smith,...
...Cami Petrides
Mrs. Babich
Algebra Period 4
April 1, 2014
Extra Credit Project
12. When you flip a light switch, the light seems to come on almost immediately, giving the impression that the electrons in the wiring move very rapidly.
Part A: In reality, the individual electrons in a wire move very slowly through wires. A typical speed for an electron in a battery circuit is 5.0x10 to the -4th meters per second. How long does it take an electron moving at that speed to travel a wire 1.0 centimeter, or 1.0x10 to the -2nd?
Part B: Electrons move quickly through wires, but electric energy does. It moves at almost the speed of light, 3.0x10 to the 8th meters per second. How long would it take to travel 1.0 centimeters at the speed of light?
Part C: Electrons in an ordinary flashlight can travel a total distance of only several centimeters .suppose the distance an electron can travel in a flashlight circuit is 15 centimeters, or 1.5x10 to the -1st meter. The circumference of the earth is about 4.0x10 to the 7th meters. How many trips around the earth could a pulse of electric energy make at the speed of light in the same time an electron could travel through 15 centimeters of a battery circuit in 5.0x10 to the -4th meters per second?
For part A, the first step is to put (5.0) to the 10th to the -4th. The numerator would be (0.00050) if someone were trying to put 5.0x10 to the -4th in the form it’s supposed to be in. For the second scientific...
...Evelyn Boyd GranvilleEvelyn Boyd Granville, a mathematician, teacher, and scientist, she was born on January 5, 1924 in Washington, D.C. She attended a then-segregated Dunbar High School, and was encouraged in the subject by two of her mathemetics teachers. Granville attended Smith College on a partial scholarship. In 1945, she graduated summa cum laude and was elected to Phi Beta Kappa. She worked with Einar Hille, her Ph.D. faculty adviser at Yale University, in functional analysis.
Granville received a Ph.D. in mathematics from Yale in 1949, the same year Marjorie Lee Browne received a Ph.D. in mathematics from the University of Michigan. They were the first Black women to receive doctorates in mathematics in the United States. From there, Granville spent a year researching at the New York University Institute of Mathematics and was a part-time instructor in the math department of New York University (NYU). In 1950, Professor Granville was appointed as Associate Professor of Mathematics at Fisk University, Nashville; where two of her former students, Vivienne Malone Mayes and Etta Zuber Falconer, went on to receive Ph.D.s in mathematics.
After two years of teaching, Granville went to work for the Diamond Ordnance Fuze Laboratories as an applied mathematician. In 1956, she worked for IBM on the Project Vanguard and Project Mercury space...
...Name/Student Number:
Algebra 2 Final Exam
Multiple Choice
Identify the choice that best completes the statement or answers the question.
Simplify the trigonometric expression.
1.
a.
b.
c.
d.
Answer B
In , is a right angle. Find the remaining sides and angles. Round your answers to the nearest tenth.
2.
a = 3, c = 19
a.
= 9.1°, = 80.9°, b = 18.8
c.
= 14.5°, = 75.5°, b = 18.8
b.
= 80.9°, = 9.1°, b = 18.8
d.
= 75.5°, = 14.5°, b = 18.8
Answer A
3.
What is the simplified form of sin(x + p)?
a.
cos x
b.
sin x
c.
–sin x
d.
–cos x
Answer C
Rewrite the expression as a trigonometric function of a single angle measure.
4.
a.
b.
c.
d.
Answer A
Short Answer
5.
Consider the sequence 1, , , , ,...
a.
Describe the pattern formed in the sequence.
b.
Find the next three terms.
6.
Consider the sequence 16, –8, 4, –2, 1, ...
a.
Describe the pattern formed in the sequence.
b.
Find the next three terms.
7.
Consider the graph of the cosine function shown below.
a. Find the period and amplitude of the cosine function.
b. At what values of for do the maximum value(s), minimum values(s), and zeros occur?
Verify the identity. Justify each step.
8.
sinΘ/cosΘ+cosΘ/sinΘ
sin^20+cos^2Θ/sinΘcosΘ
1/sinΘcosΘ
9.
Verify the identity...
...Algebra is a way of working with numbers and signs to answer a mathematical problem (a question using numbers)
As a single word, "algebra" can mean[1]:
* Use of letters and symbols to represent values and their relations, especially for solving equations. This is also called "Elementary algebra". Historically, this was the meaning in pure mathematics too, like seen in "fundamental theorem of algebra", but not now.
* In modern pure mathematics,
* a major branch of mathematics which studies relations and operations. It's sometimes called abstract algebra, or "modern algebra" to distinguish it from elementary algebra.
* a mathematical structure as a "linear" ring, is also called "algebra," or sometimes "algebra over a field", to distinguish it from its generalizations.
A variable is a letter or symbol that takes place of a number in Algebra. Common symbols used are a, x, y, θ, and λ. The letters x and y are commonly used, but remember that any other symbols would work just as well.
Variables are used in algebra as placeholders for unknown numbers. If you see "3 + x", don't panic! All this means is that we are adding a number who's value we don't yet know.
Term: A term is a number or a variable or the product of a number and a variable(s).
An expression is two or more terms, with operations...
...Animal Kingdom
The animal kingdom is a taxonomic kingdom composed of multicellular, eukaryotic organisms. Mostly, their body structures become fixed as they develop, yet still some organisms in this kingdom have the ability to undergo metamorphosis. The majority of these organisms are motile, which means they can move on their own and with spontaneity. All animals are heterotrophic, which implies that they depend on other organisms for food. Animals live in places that provide their necessities to survive, called habitats. These basic necessities include food, water, protection from the environment, and appropriate space. In accordance with these necessities, there are a number of survival techniques used by organisms in this kingdom. These techniques can fall within the category of adaptations, which help these organisms adapt to various habitats. This kingdom falls in the domain Eukaryota, and there are nearly 40 different phyla that can be classified under the Kingdom Anamalia. Besides that there are 5 other lower levels in which these organisms can be classified, called class, order, family, genus and species. .
Invertebrates
Invertebrates are apart of the Animal Kingdom and are characterized by their inability to possess or develop a vertebral column. In the world of taxonomy, the word invertebrate is merely a convenient term used to help with this characterization. A great majority of the animal kingdom are invertebrates due to the fact that only 4% of animal...
...
Name: _________________________
Score: ______ / ______
Algebra I Quarter 1 Exam
Answer the questions below. Make sure to show your work when applicable.
Solve the absolute value equation. Check your solutions.
| 5x + 13| = –7
5x + 13 = -7
5x = -20
X = -4
Simplify the expression below.
6n2 - 5n2 + 7n2
6 – 5 + 7 = 8
=8n2
The total cost for 8 bracelets, including shipping was $54. The shipping charge was $6. Write an equation that models the cost of each bracelet.
8 x + 6 = 54 $8.00 each bracelets
The total cost for 8 bracelets, including shipping was $54. The shipping charge was $6. Determine the cost for each bracelet. Show your work
8x+6 =54
8x=54-6
8x = 48
X = 6
Solve the inequality. Show your work.
6y – 8 ≤ 10
5. 6y – 8 ≤ 10
6y ≤ 10 +8
6y ≤ 18
y ≤ 18/6
=y ≤ 3
The figures above are similar. Find the missing length. Show your work.
x = 1.8 in
What is 30% of 70? Show your work.
30 divied by100 = .30
70 times 0.3(30% as a decimal) which will be 21
=21
Simplify the expression below.
-5-8
(16x9)/(21x8)=144/168 divided by 12=12/14=6/7
8. 6/7
Which property is illustrated by 6 x 5 = 5 x 6?
commutative property of multiplication
Evaluate the expression for the given values of the variables. Show your work.
4t + 2u2 – u3; t = 2 and u = 1
4t + 2u2 – u3; t = 2 and u = 1
4 (2) + 2 (1) 2 – (1) 3
8 + 2 – 1 = 1
Solve the...
...
Algebra
From Wikipedia, the free encyclopedia
"Algebraist" redirects here. For the novel by Iain M. Banks, see The Algebraist.
For beginner's introduction to algebra, see Wikibooks: Algebra.
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The quadratic formula expresses the solution of the degree two equation ax^2 + bx +c=0 in terms of its coefficients a, b, c.
Algebra (from Arabic al-jebr meaning "reunion of broken parts"[1]) is one of the broad parts of mathematics, together with number theory, geometry and analysis. As such, it includes everything from elementary equation solving to the study of abstractions such as groups, rings, and fields. The more basic parts of algebra are called elementary algebra, the more abstract parts are called abstract algebra or modern algebra. Elementary algebra is essential for any study of mathematics, science, or engineering, as well as such applications as medicine and economics. Abstract algebra is a major area in advanced mathematics, studied primarily by professional mathematicians. Much early work in algebra, as the origin of its name suggests, was done in the Near East, by such mathematicians as Omar Khayyam (1050-1123).
Elementary algebra differs from arithmetic in the use of abstractions, such as using letters to stand for numbers that are either unknown or allowed to take on...