Algebra
3x+5=20
x=5
Area of triangle, base 10, height 5
25
Civilization credited with earliest use of 0
Maya or India
"Father of geometry"?
Euclid
Which is greater: 1/2 or 2/5
1/2
Factor x^2 - 5x +6
(x-2)(x-3)
Triangle angles: 40°, 65°, missing angle?
75
Who introduced the = sign?
Robert Recorde
Female translator of Elements?
Hypatia of Alexandria
You have 3 pairs of socks: 1 red, 1 blue, and 1 green. What’s the minimum number you must pull out to guarantee a matching pair?
4
Ann and Kate have 80 dollars together. If Kate buys ice-cream for 5 dollars, then Kate will have double Ann’s money. How much money does Ann have?
$25
If a triangle has the angles, 30, 60, 90 what are the ratios of the sides given the shortest one is length x?
Who used Pythagorean Theorem before Pythagoras?
Babylonians
Indian mathematician with early trig/calculus ideas?
Aryabhata
A bat and a ball cost $1.10 together. The bat costs $1.00 more than the ball. How much is the ball?
0.05
If the average of three numbers is V. If one of the numbers is Z and another is Y, what is the remaining number? (in terms of Z, Y, V)
3V- Z - Y
A square has a diagonal with length 560 inches, a circle is inscribed within the square such that the circumference of the circle touches each midpoint of the squares sides, what is the area of the circle?
39,200pi
Purpose of developing calculus?
To model change and motion (e.g., physics problems like velocity/acceleration)
First African-American woman PhD in math?
Euphemia Lofton Haynes
What 3-digit number reads the same forward and backward and is divisible by 11 and 3?
363
Two cyclists start biking from a trail’s start 3 hours apart. The second cyclist travels at 10 miles per hour and starts 3 hours after the first cyclist who is traveling at 6 miles per hour. How much time will pass before the second cyclist catches up with the first from the time the second cyclist started biking?
4.5 hours
In the triangle ABC, the measure of angle is A is (2x-5), the measure of angle B is (7x + 1), and the measure of angle C is (4y - 6). If side AB is extended through point B to an external point D, and angle CBD is x + 5y, what is the value of angle CBD?
53
Who formalized the concept of functions in 17th century?
Gottfried Wilhelm Leibniz
Laid foundation for computer science?
Alan Turing
I am a number. Multiply me by 4, subtract 6, divide by 2, and you get 10. What number am I?
6.5