Algebra quizzzzz

Algebra

100

What do we use to represent variables in Algebra?

Letters of the alphabet

200

Hiw do you call the next letter: a' ?
hint, it's not just "a"

a prime

300

What is Algebra?

The branch of maths which studies the considered quantity on the most general way possible 

400

What's the absolute value of the number: -$125 ?

l 125 l

500

A rectangle with an area of 27cm² has a base 3 times larger than the hight, what are the values for the length and hight?

Lenght=9cm
Hight=3cm

Notation

100

What letters of the alphabet do we use to represent variables?

The last ones: x,y,z...

200

What letters of the alphabet do we use to represent a constant?

The first ones: a,b,c...

300

What does this symboo mean:  "≈"  ?

Approximately equal to

400

What's the hierarchy of operations of an equation?

Parentheses, powers and roots, multiplication and division, and addition and substraction

500

Identify the coefficients, constant, exponents, operators and variables of the next equation's terms:
12x³-3y²+23

Coefficients: 12, 3
Contstant:23
Exponents:3, 2
Operators: -, +
Variables: x, y

Arithmetics (10s)

100

23+47=?

70

200

145+250=?

395

300

(7)(12)=?

84

400

13²=?

169

500

(you have 20 seconds)
144/36 - 2 =?

2

Formulas

100

What's Einstein's famous formula?

E=mc²

200

What's the pythagorean theorem formula?

a²+b²=c²

300

Formula for the Area of a circle and area of a triangle

Circle: 𝝿 r² or: (𝝿(D)²)/4
Triangle:(b*h)/2

400

What's the formula for a perfect square binomial (a+b)²?

a²+2ab+b²

500

What's the quadratic formula?

(-b± √ (b²-4ac))/(2a)

Operations

100

Reduce: 140x² - 64x² = ?

76x²

200

Solve:   4x + 11 = 3

x = -2

300

Solve for x: (3x²/x) - (6x/x) =0

X=2

400

Factorize the nex equation, you have 2 minutes:
x² + 11x +28

(X + 4)(X + 7)

500

Solve for x:  X^(1/2)=12

144