Questions in mathematics

Questions in mathematics

📝 Answered - $a^4-2 a^3 b+a^2 b^2-b^4$

📝 Answered - Represent $\frac{-22}{-44}$ on the number line.

📝 Answered - The table gives information about the lengths of time, in hours, some children spent watching TV last week. | 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 | Draw a histogram for the information in the table.

📝 Answered - A school play had 240 audience members consisting of adults and children. There was at least one adult for every 2 children. Which of the following inequalities gives the possible values of [tex]$a$[/tex], the number of adults in the audience? (A) [tex]$a > 80$[/tex] (B) [tex]$a \geq 80$[/tex] (C) [tex]$a > 120$[/tex] (D) [tex]$a \geq 120$[/tex]

📝 Answered - Select the correct answer. For a one-week period, three bus routes were observed. The results are shown in the table below. | | On-Time | Delayed | Total | | :---------- | :------ | :------ | :---- | | Bus Route A | 28 | 7 | 35 | | Bus Route B | 37 | 8 | 45 | | Bus Route C | 24 | 6 | 30 | | Total | 89 | 21 | 110 | A bus is selected randomly. Which event has the highest probability? A. The bus is from route A and is on time. B. The bus is from route C and is delayed. C. The bus is from route C and is on time. D. The bus is from route B and is delayed.

📝 Answered - Which of the following numbers is a multiple of 6? A) 333 B) 882 C) 106 D) 424

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - Subtract the problem 0.578 - 0.36

📝 Answered - What value of $x$ satisfies the equation $2x + 5 + 3x = 25$? A. $x=3 \frac{1}{3}$ B. $x=4$ C. $x=5$ D. $x=20

📝 Answered - Applying the recursive rule $a_n = a_{n-1} + 3$, write the first seven terms of the sequence when $a_0 = 10$.