🧮 algebra
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Study Notes
1. Prime Factorization and Number Theory
1.1) Express 660 as a product of its prime factors.
Compound Inequality
1. The problem is to solve the compound inequality $$14 \leq 6x + 4 \leq 24$$ and express the solution as a fraction in simplest form.
2. We use the property that if $$a \leq b \le
Compound Inequality
1. **State the problem:** Solve the compound inequality $$-2 < 2x + 11 < 12$$ for $x$.
2. **Understand the inequality:** This is a double inequality, meaning $2x + 11$ is greater t
Function Values
1. **Stating the problems:**
- Find $k$ if $f(3k - 2) = 2k + 3$ given $f(x) = 4x + 1$.
Math 9 Variation Exponents
1. The problem asks which equation represents an inverse variation.
Inverse variation means $y$ varies inversely as $x$, so $y = \frac{k}{x}$.
Fraction Conversions
1. **Problem Statement:** Convert improper fractions to mixed numbers and mixed numbers to improper fractions.
2. **Formulas and Rules:**
Sequence Sums Sector
1. **Calculate the area of quadrilateral ABCD**
Since the problem does not provide coordinates or side lengths, we cannot calculate the area without additional information.
Radicals Evaluation
1. **Evaluate** $\frac{2 + \sqrt{2}}{\sqrt{2}}$.
Use the property $\frac{a+b}{c} = \frac{a}{c} + \frac{b}{c}$.
Proportional Relation
1. Problem: A machine fills 680 bottles in 5 hours. How many bottles will it fill in 3 hours?
Formula: Bottles filled are directly proportional to time.
Solve Proportion
1. **State the problem:** Solve the proportion $4 : x = 9 : 18$ to find the value of $x$.
2. **Recall the rule for proportions:** If $a : b = c : d$, then $\frac{a}{b} = \frac{c}{d
Expression Evaluation
1. **State the problem:**
We want to simplify and understand the expression $$63.72 + 1.96 \left( \frac{1.9}{\sqrt{n}} \right)$$ where $n$ is a positive number.
Vector Domain Range
1. **Problem Statement:** Determine the domain and range of the relation defined by the vector \(\vec{AB} = -4\hat{i} + 2\hat{j}\) where point A is at (-1, -1) and point B is at (3
Algebraic Factoring
1. **Problem Statement:** Simplify each algebraic expression by factoring and combining like terms.
2. **Expression 1:** $4x^3yz - 8x^2y^2 + 12xy$
Variation Exponents
1. The problem asks to identify which equation represents an inverse variation.
Inverse variation means $y$ varies inversely as $x$, so $y = \frac{k}{x}$ where $k$ is a constant.
Balansmethode
1. We gaan de balansmethode gebruiken om een vergelijking op te lossen.
2. De balansmethode houdt in dat je aan beide kanten van de vergelijking dezelfde bewerking uitvoert, zodat
Radicals Evaluation
1. Evaluate $\frac{2 + \sqrt{2}}{\sqrt{5}}$.
We rationalize the denominator by multiplying numerator and denominator by $\sqrt{5}$:
Balansmethode Makkelijk
1. We gaan een vergelijking oplossen met de balansmethode. Dit betekent dat we aan beide kanten van de vergelijking dezelfde bewerking doen om de onbekende te isoleren.
2. Stel de
Gewicht Geitjes
1. **Stel het probleem vast:** We hebben twee formules voor het gewicht van geitjes Bibi en Boa in kilogram, afhankelijk van de tijd $t$ in maanden:
$$\text{Bibi gewicht} = 40 + 25
Cubic Graph Analysis
1. **State the problem:**
We are given the function $y = x^3 - 3x^2 + x$ and asked to:
Line Equation
1. **Stating the problem:** We are given three points on a 2D Cartesian coordinate system: (1,1), (2,3), and (3,6). We want to find the equation of the line passing through these p
Constant Proportionality
1. The problem asks for the constant of proportionality (unit rate) between Goblins (x) and power points (y) from the graph.
2. The constant of proportionality in a direct variatio