| Topic | Problem | Solution |
|---|---|---|
| None | Given $a=12 \mathrm{~cm}, b=9 \mathrm{~cm}$ and $… | \(\cos A = \frac{a^2 + b^2 - c^2}{2ab}\) |
| None | 13. A solution was prepared by mixing equal volum… | Given equal volumes of $0.10 \mathrm{~mol} \cdot \mathrm{kg}^{-1} \mathrm{NH}_{4} \mathrm{Cl}$ and … |
| None | $1+1=$ | \(1+1=\) |
| None | $\frac{\sin 8^{\circ}}{16.2}=\frac{\sin \theta}{1… | \(\frac{\sin 8^\circ}{16.2} = \frac{\sin \theta}{10.4}\) |
| None | $\frac{\sin 30^{\circ}}{14}=\frac{\sin 50^{\circ}… | \(\frac{\sin 30^\circ}{14} = \frac{\sin 50^\circ}{b}\) |
| None | $\frac{5}{6} \div \frac{1}{3}=$ | \(\frac{5}{6} \div \frac{1}{3} = \frac{5}{6} \times \frac{3}{1}\) |
| None | $x^{2}+y^{2}-10 x-2 x+17=0$ | Rewrite the equation as \(x^2 - 12x + y^2 - 10y + 17 = 0\) |
| None | $7475 \times 421$ | To solve the multiplication problem, we will multiply the two numbers: \(7475 \times 421\) |
| None | ATIVIDADES 62. Calcule o valor da expressão \[ \f… | First, we need to simplify the expression by evaluating the exponents: \(3^{-1} = \frac{1}{3}\), \(… |
| None | \[ \begin{array}{|c|c|c|} \hline K & C & A \\ \hl… | Given a triangle with sides K = 9, C = 7, and A = 10, we need to find the angles of the triangle. |
| None | $1 x^{2}+6 x+9=0$ | Given the quadratic equation: \(x^2 + 6x + 9 = 0\) |
| None | Create a table of values for the graph of $3 x+2 … | Create a table of values for the given equation, with x values ranging from -1 to 3. To do this, it… |
| None | Name: ID: A 40. Thomas used a 2.6-m-long ramp to … | Let \(x\) be the angle between the ramp and the ground. We can use the cosine formula to find the a… |
| None | b) What rill be the population in 8 years? Vear? … | First, we need to find the population in 8 years using the formula \(P = 1000 * (\frac{81}{16})^{-\… |
| None | $3,5 \cdot 10^{7} \cdot 4,3 \cdot 10^{-5}$ | Rewrite the numbers in scientific notation: \(3.5 \cdot 10^{7}\) and \(4.3 \cdot 10^{-5}\) |
| None | An electrician leans an extension ladder against … | Given: angle = $71^\circ$, height = 28 feet |
| None | A boat is heading towards a lighthouse, whose bea… | Let the distance from point A to the lighthouse be $x$ and the distance from point B to the lightho… |
| None | Evaulate the integral by trigonometric substituti… | Let's use the trigonometric substitution method to solve this integral. The given integral is in th… |
| None | (3) 6. The area of a triangle is $12.6 \mathrm{in… | Given the area of the triangle is \(12.6\mathrm{in}^{2}\) and the base is \(3.5\mathrm{in}\). |
| None | 40 The equation $y=6.75 x$ models the cost, in do… | First, we need to find the cost per pound of steak at grocery store 2. We can use the given data in… |
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