Questions in mathematics

Questions in mathematics

[Free] Use the following to answer the next 4 questions. Let the universal set be the natural numbers from 40 to 60 inclusive. The universal set contains the following subsets: - [tex]$F=\{$ multiples of 6$\}[/tex] - [tex]$T=\{$ multiple of 2 $\}[/tex] True or False. [tex]$n(T)+n(T \prime)=21 ?$[/tex]

[Free] Which of the following demonstrates the zero property? A. [tex]$0 \times x=x \times 0$[/tex] B. [tex]$0=x \times 0$[/tex] C. [tex]$0=x+0$[/tex] D. [tex]$0+x=x+0$[/tex]

[Free] Circle O has a circumference of approximately [tex]$250 \pi ft$[/tex]. What is the approximate length of the diameter? A. 40 ft B. 80 ft C. 125 ft D. 250 ft

[Free] Jeff can walk comfortably at 4 miles per hour. Find a linear equation that represents the total distance Jeff can walk in t hours, assuming he doesn't take any breaks.

[Free] When 20% was taken off from the price of an item, K480 was left. Find the original price of the item.

[Free] Martin puts his weekly paycheck into his checking account. In which column should he write the value of his paycheck? Deposits Balance

[Free] Find the average rate of change of [tex]f(x)=-2 x^3+3 x^2[/tex] from [tex]x=-1[/tex] to [tex]x=3[/tex]. Simplify your answer as much as possible.

[Free] Find the vertex of the parabola. [tex]y=2 x^2-16 x+34[/tex] A. (-2, -4) B. (-4, -2) C. (4, 2) D. (2, 4)

[Free] What are the solutions of the equation [tex]$y=-2 x^2+9 x-4$[/tex] shown in the graph below? A. [tex]$x=-\frac{1}{2}, 4$[/tex] B. [tex]$x=-4,4$[/tex] C. [tex]$x=\frac{1}{3}, 4$[/tex] D. [tex]$x=\frac{1}{2}, 4$[/tex]

[Free] The radius of the circle below is 73 cm. Work out the circumference of the circle in meters. Give your answer to 1 d.p. Radius, r = 73 cm Circumference, C = 2 * pi * r C = 2 * pi * 73 cm C = 458.04 cm C = 4.58 m C ≈ 4.6 m