Questions in mathematics

Questions in mathematics

[Answered] $2 x^3+17 x^2+23 x-42 ; x-1$

[Answered] It takes $1 \frac{1}{2}$ hours to complete each homework assignment assigned to you. You spend $51 / 4$ hours working on homework assignments. How many assignments did you complete in this time?

[Answered] A right triangle has one angle that measures [tex]$23^{\circ}$[/tex]. The adjacent leg measures 27.6 cm and the hypotenuse measures 30 cm. What is the approximate area of the triangle? Round to the nearest tenth. Area of a triangle [tex]$=\frac{1}{2} bh$[/tex] A. 68.7 [tex]$cm^2$[/tex] B. 161.8 [tex]$cm^2$[/tex] C. 381.3 [tex]$cm^2$[/tex] D. 450.0 [tex]$cm^2$[/tex]

[Answered] An electrician plans to install solar panels on a rectangular section of roof with an area of 180 m². The width of this section of roof is 7 1/5 m across. What is the length of this section of roof? (m)

[Answered] The function f(x) = 81(b)^x, where b is a positive constant, is given. For every increase in the value of x by 1, the value of f(x) increases by c%, where 0 < c < 100. Which expression gives the value of c in terms of b? (A) 1 + \frac{b}{100} (B) b + 100 (C) 100(b + 1) (D) 100(b - 1)

[Answered] The table shows the costs of items Anna purchased at an art supply store. What was the total cost of the items that Anna purchased?

[Answered] Which points are on the perpendicular bisector of the given segment? Check all that apply. (-8,19) (1,-8) (0,19) (-5,10) (2,-7)

[Answered] Solve. [tex]$15 t+8=4-t$[/tex]

[Answered] Scientists estimate that Earth is 4,540,000,000 years old. What is that number expressed in scientific notation? A. $4.54 \times 10^7$ B. $4.54 \times 10^9$ C. $454 \times 10^{10}$ D. $2(127 \times 10^7)$

[Answered] Which relation is a direct variation that contains the ordered pair $(2,7)$? $y=4 x-1$ $y=\frac{7}{x}$ $y=\frac{2}{7} x$ $y=\frac{7}{2} x$