Questions in mathematics

Questions in mathematics

📝 Answered - \frac{3 x^2-9}{x-3} \div \frac{x+3}{x}

📝 Answered - Convert the unit of length. Use $1 m=100 cm$ and $1 m \approx 3.28 ft$. Round the answer to one decimal place if necessary. $160 cm \approx \frac{\square}{\square} \cdot \frac{\square}{\square} \cdot \frac{\square}{\square} \approx \square ft$

📝 Answered - Find the number of units sold for May. | | Beginning Inventory | Purchases | Units Sold | | :---------- | :------------------ | :-------- | :--------- | | April | 8,900 | 1,700 | 3,600 | | May | 7,000 | 2,500 | {[?]} | | June | 6,700 | 1,000 | 1,800 | Ending Inventory = Beginning Inventory + Purchases - Units Sold.

📝 Answered - Consider the following equation: [tex]4 x-y=6[/tex] Step 2 of 2: Determine if the given ordered pair, [tex](3.3,-1)[/tex], satisfies the given equation.

📝 Answered - The ratio of red counters to blue counters is 3 : 1. What fraction of the counters are blue?

📝 Answered - Draw a histogram for the information in the table. | Length of time $(t)$ | Frequency | | :------------------- | :-------- | | $0 \leqslant t<10$ | 8 | | $10 \leqslant t<15$ | 15 | | $15 \leqslant t<20$ | 10 | | $20 \leqslant t<30$ | 11 |

📝 Answered - $\begin{array}{l}x^2+t^2=10 \\ \frac{1}{x}+\frac{1}{t}=\frac{4}{3}\end{array}$

📝 Answered - Estimate the answer by rounding each number to the nearest 10: 939 + 65.0 + 103.3 + 72.7

📝 Answered - Which algebraic expression represents this word description? The quotient of nine and the sum of a number and one A. $\frac{9}{x}+1$ B. $\frac{x+1}{9}$ C. $\frac{x}{9}+1$ D. $\frac{9}{x+1}$

📝 Answered - Two automobiles are approaching the origin. The first one is traveling from the left on the x-axis at 30 mph. The second is traveling from the top on the y-axis at 45 mph. How fast is the distance between them changing when the first is at (-5, 0) and the second is at (0, 10)? (Both coordinates are in miles.)