Questions in mathematics

Questions in mathematics

📝 Answered - Find the inverse of the given one-to-one function [tex]f[/tex]. Give the domain and the range of [tex]f[/tex] and of [tex]f^{-1}[/tex], and graph both [tex]f[/tex] and [tex]f^{-1}[/tex] on the same set of axes. [tex]... x+5[/tex] Choose the correct graphs for [tex]f[/tex] and [tex]f^{-1}[/tex]. A. B. C. D.

📝 Answered - Complete each step to solve the inequality for x. First, get the x-term by itself on one side of the inequality. How will you remove the "+7"? [tex]4 x+7\ \textgreater \ -17[/tex]

📝 Answered - Which fraction is equivalent to $1.240$? A) $18 / 333$ B) $180 / 3333$ C) $180 / 333$ D) $180 / 33$

📝 Answered - (0.32 × 5.5) / 2.2 - 0.55 / 1.1

📝 Answered - 7. The square of which of the following would be an odd number? (a) 431 (b) 272 (c) 1234 (d) 7928 8. Which of the following is a perfect square? (a) 45 (b) 81 (c) 18 (d) 54 9. What will be the "one's digit" in the square of 1234? (a) 6 (b) 2 (c) 8 (d) 9 10. What will be the number of zeros in the square of 400? (a) 5 (b) 1 (c) 3 (d) 4 11. The perfect square number between 30 and 40 is: (a) 35 (b) 39 (c) 36 (d) 32 12. Which of the following numbers would have digit 6 at units place? (a) 19² (b) 24² (c) 25² (d) 13² 13. Which of the following numbers would have digit 5 at units place? (a) 95² (b) 59² (c) 24² (d) 42² 14. Which of the following numbers would have digit 1 at units place? (a) 81² (b) 18² (c) 54² (d) 95² 15. How many natural numbers lie between 9² and 10²? (a) 15 (b) 19 (c) 18 (d) 17

📝 Answered - Evaluate the expression | -2 | - | - 1 |

📝 Answered - Which function represents the situation? Item Cost | Price on the Tag, $x$ | Final Cost | | :--------------------- | :----------- | | $10 | $0.75(10)$ | | $20 | $0.75(20)$ | | $30 | $0.75(30)$ | | $40 | $0.75(40)$ | A. It is linear because the ratio of the change in the final cost compared to the rate of change in the price tag is constant. B. It is linear because the function is continuous. C. It is nonlinear because the final cost is determined by multiplying each price tag by 0.75. D. It is nonlinear because the price tag and final cost columns do not have the same common difference.

📝 Answered - Which value of $w$ makes $14=11+\frac{w}{8} \cdot 6$ a true statement? Choose 1 answer: A. $w=1$ B. $w=4$ C. $w=16$ D. $w=24

📝 Answered - Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression $(-1+i)+(21+5 i)$? A. $(-1+i)+(21+5 i)+0$ B. $-1+(i+21)+5 i$ C. $(-1+21)+(i+5 i)$ D. $-(1-i)+(21+5 i)$

📝 Answered - Rob and his brother are riding in the same car on a Ferris wheel which has a diameter of 40 feet. Once the Ferris wheel starts, they travel a distance of [tex]$\frac{86}{3} \pi$[/tex] feet before the ride stops to let more people on. What is the measure of the associated central angle for the arc they traveled? The central angle measures $\square$ ${ }^{\circ}$.