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Questions in mathematics

[Done] The equation $\tan ^{-1}\left(\frac{8.9}{7.7}\right)=x$ can be used to find the measure of angle LKJ. What is the measure of angle LKJ? Round to the nearest whole degree. A. $41^{\circ}$ B. $45^{\circ}$ C. $49^{\circ}$ D. $55^{\circ}$

[Done] Which table represents the graph of a logarithmic function with both an [tex]$x$[/tex]- and [tex]$y$[/tex]-intercept?

[Done] $100 + 3 \cdot 03 =

[Done] Express $_{n}P_{n-4}$ without using factorials. Assume n > 4. Choose the correct answer below. A. $_{n}P_{n-4} = n(n-1)(n-2)(n-3)$ B. $_{n}P_{n-4} = n(n-4) \cdot \cdot \cdot 3 \cdot 2 \cdot 1$ C. $_{n}P_{n-4} = n(n-1)(n-2) \cdot \cdot \cdot 5$ D. $_{n}P_{n-4} = n(n-1)(n-2)(3)(n-4)$

[Done] 5) How many millions make a crore? 6) How many hundreds make a lakh?

[Done] Which explains how to find the radius of a circle whose equation is in the form [tex]x^2+y^2=z[/tex]? A. The radius is the constant term, [tex]z[/tex]. B. The radius is the constant term, [tex]z[/tex], divided by 2. C. The radius is the square root of the constant term, [tex]z[/tex]. D. The radius is the squad of the constant term, [tex]z[/tex].

[Done] 1. [tex]1,3 \times \frac{2}{4}[/tex] 2. [tex]5 \times \frac{1}{3}[/tex] 3. [tex]4 \times \frac{3}{5}[/tex] 4. [tex]4 \frac{3}{4} \times \frac{2}{3}[/tex] 5. [tex]5 \frac{2}{3} \times \frac{2}{4}[/tex]

[Done] Which set of ordered pairs could be generated by an exponential function? $\left(-1,-\frac{1}{2}\right),(0,0),\left(1, \frac{1}{2}\right),(2,1)$ $(-1,-1),(0,0),(1,1),(2,8)$ $\left(-1, \frac{1}{2}\right),(0,1),(1,2),(2,4)$ $(-1,1),(0,0),(1,1),(2,4)$

[Done] The hypotenuse of a $45^{\circ}-45^{\circ}-90^{\circ}$ triangle measures 4 cm. What is the length of one leg of the triangle? A. 2 cm B. $2 \sqrt{2} cm$ C. 4 cm D. $4 \sqrt{2} cm$

[Done] Consider a circle whose equation is $x^2+y^2-2 x-8=0$. Which statements are true? Select three options. A. The radius of the circle is 3 units. B. The center of the circle lies on the $x$-axis. C. The center of the circle lies on the $y$-axis. D. The standard form of the equation is $(x-1)^2+y^2=3$. E. The radius of this circle is the same as the radius of the circle whose equation is $x^2+y^2=9$.