🧮 algebra
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Line Best Fit
1. **State the problem:** We have data points showing the relationship between years of experience ($x$) and amount charged per hour ($y$). We want to find the line of best fit and
Solve Equation Parentheses
1. **State the problem:** Solve the equation $$3(x + 5) = 33$$ for $$x$$.
2. **Use the distributive property:** Multiply 3 by each term inside the parentheses:
Algebra Expressions
1. **Stating the problems:**
We have three algebraic expressions/equations to solve or simplify:
Solve Equation Parentheses
1. **State the problem:** Solve the equation $$3(3v - 8) = 21$$ for the variable $v$.
2. **Use the distributive property:** Multiply 3 by each term inside the parentheses:
Line Best Fit
1. **State the problem:** We have a scatter plot showing the relationship between time spent watching TV (x) and time spent doing homework (y). We want to find the line of best fit
Solve Equation Parentheses
1. **State the problem:** Solve the equation $$2(2u + 7) = 42$$ for the variable $u$.
2. **Use the distributive property:** Multiply 2 by each term inside the parentheses:
Percentage Calculation
1. The problem asks to find 70% of 62.
2. To find a percentage of a number, use the formula:
Percentage Calculation
1. The problem asks to find 30% of 38.
2. To find a percentage of a number, use the formula: $$\text{Percentage of a number} = \frac{\text{percentage}}{100} \times \text{number}$$
Percentage Of Number
1. **State the problem:** Find 20% of 54 without using a calculator.
2. **Formula:** To find a percentage of a number, use the formula:
Ratio Systems
1. Given ratios $\frac{a}{b} = 13$ and $\frac{b}{c} = 17$, find $a+b+c$ where $a,b,c \in \mathbb{N}$.
Step 1: Express $a$ and $b$ in terms of $c$:
Algebra Systems
1. **Problem:** Given $a,b,c \in \mathbb{N}$ with the system:
$$\begin{cases} a \cdot b = 13 \\ b \cdot c = 17 \end{cases}$$
Solve Quadratic Substitution
1. **State the problem:** Solve the equation $$0 = (3x - 4)^2 - 7(3x - 4) + 10$$ for $x$.
2. **Use substitution:** Let $$y = 3x - 4$$ to simplify the equation to $$0 = y^2 - 7y + 1
Quadratic Substitution
1. **State the problem:** Solve the quadratic equation $$(3x - 4)^2 - 7(3x - 4) + 10 = 0.$$\n\n2. **Use substitution:** Let $y = 3x - 4$. The equation becomes $$y^2 - 7y + 10 = 0.$
Money Spent
1. **State the problem:** Devi spent fractions of her money on lunch and a book, then used the remainder to buy a poster costing 60 more than the book. We need to find the initial
Quadratic Inequalities
1. **Тодорхойлолт:** $x^2 + (k+2)x + 25 = 0$ тэгшитгэлийн нэг шийдтэй байх нөхцөл юу вэ?
2. **Формул:** Квадрат тэгшитгэлийн дискриминант $D = b^2 - 4ac$
Expressions Algebriques
1. **Problème 9a**: Trouver la mesure manquante du côté d'un carré dont le périmètre est donné par $$P = 32x^2 + 20x - 16$$ mètres.
2. La formule du périmètre d'un carré est $$P =
Line Slopes
1. **Problem Statement:**
You need to find four types of lines (positive slope, negative slope, zero slope, undefined slope) from photos, identify two points on each, calculate the
Expression Division
1. **State the problem:** We need to simplify and understand the expression $$\frac{1}{x \cdot (40^4 + x^2 \cdot 2) \cdot (40^1 + x^2)}$$.
2. **Rewrite the expression:** The expres
Expression Division
1. Stating the problem: We need to simplify and understand the expression $$\frac{1}{x \cdot (4 + x^2)^{41} \cdot (1 + x^2)}$$.
2. The expression involves powers and products in th
Partial Fraction
1. **State the problem:** We want to find the partial fraction expansion of the function $$\frac{1}{x(40^4 + x^2)^2(1 + x^2)}.$$\n\n2. **Rewrite the function:** The denominator is
Absolute Value
1. **State the problem:** Solve the equation $|y| + 11 = 16$ for $y$.
2. **Recall the definition and properties of absolute value:** The absolute value $|y|$ represents the distanc