Questions in mathematics

Questions in mathematics

[Free] Which of the following shows one way to simplify $\sum_{n=1}^{43}(3+9 n) ?$ A. $\sum_{n=1}^{43} 3+\sum_{n=1}^{43} 9 n$ B. $\sum_{n=1}^{43} 3+\sum_{n=1}^{43} 9+\sum_{n=1}^{43} n$ C. $3 \sum_{n=1}^{43} 9 n$

[Free] Consider the function represented by the equation $x-y=3$. What is the equation written in function notation, with $x$ as the independent variable? A. $f(x)=y+3$ B. $f(x)=-y-3$ C. $f(x)=-x+3$ D. $f(x)=x-3$

[Free] Factor completely $x^3-2 x^2-5 x+10$ A. $(x-2)(x^2-5)$ B. $(x+2)(x^2+5)$ C. $(x-2)(x^2+5)$ D. $(x+2)(x^2-5)$

[Free] In which triangle is the value of [tex]$x$[/tex] equal to [tex]$\cos ^{-1}\left(\frac{4.3}{6.7}\right)$[/tex]? (Images may not be drawn to scale.)

[Free] Give me solutions to 3 ÷ 9092

[Free] Find the average rate of change of [tex]f(x)=-3 x^2-5 x[/tex] from [tex]x=4[/tex] to [tex]x=7[/tex]. Simplify your answer as much as possible.

[Free] The following data points represent the number of campsites that are vacant at each campground park along the Shinacook River. Answer 2 questions about the data points. 1. Sort the data from least to greatest. 18 15 11 9 12 17 2. Find the median number of campsites.

[Free] b) [tex]4^{-x} = \frac{1}{16}[/tex] c) [tex]\frac{1}{5^n} = 125[/tex]

[Free] A thermometer measures in centigrade scale. It is of which type of the following? a. Interval Scale b. Ordinal Scale c. Ratio Scale d. Nominal Scale

[Free] cos 15° = (√6 + √2) / 4