| Topic | Problem | Solution |
|---|---|---|
| None | If a fair coin is tossed 4 times, what is the pro… | \( P(\text{exactly 1 head}) = \dbinom{4}{1} \cdot (0.5)^1 \cdot (0.5)^3 \) |
| None | 3. Will a \( 120-\mathrm{kg} \) raft of density \… | \(V = \frac{m}{\rho} = \frac{120}{700} = 0.1714\ \mathrm{m}^{3}\) |
| None | find out the value of \( x: x^{\wedge} 2-1=0 \) | \( x^{2} - 1 = 0 \) |
| None | \( \left\{\begin{array}{l}3 x-2 y=4 \\ 2 x+3 y=7\… | Add the two equations together to eliminate y: |
| None | find out the value of \( x: x^{\wedge} 2-1=n d \)… | To solve the quadratic equation x^2-1=0: |
| None | \( 11: 52 \) \( <X \) Signs of sums (practice) | … | To find the sign of a sum, we need to add the numbers together. |
| None | Multiply. Hint: Use the array below to help solve… | To multiply two numbers, we need to multiply each digit of the first number with each digit of the … |
| None | \( \mathrm{Q} \) 函数图像 能描述函数图像的趋向 Let \( f(x)=p(x)… | 首先观察函数的定义，可以看出 f(x) 是由两个函数取“最小值”而得，即 f(x) = min{p(x), x^2-7x+12}。 |
Here you can find problems in different subjects and step-by-step solutions provided by Solvely, including problems from mathematics, physics, chemistry and other subjects, covering different knowledge points. These problems help you understand and learn knowledge points, such as geometry, algebra, equations, fractions, and exponents, etc. If you have problems that you want to solve, you can also download Solvely to get step-by-step answers.