Questions in Grade High-school

Questions in Grade High-school

[Done] The domain of [tex]$f(x)$[/tex] is the set of all real values except 7, and the domain of [tex]$g(x)$[/tex] is the set of all real values except -3. Which of the following describes the domain of [tex]$(g \circ f)(x)$[/tex]? A. all real values except [tex]$x \neq-3$[/tex] and the [tex]$x[/tex] for which [tex]$f(x) \neq 7$[/tex] B. all real values except [tex]$x \neq-3$[/tex] and the [tex]$x[/tex] for which [tex]$f(x) \neq-3$[/tex] C. all real values except [tex]$x \neq 7$[/tex] and the [tex]$x[/tex] for which [tex]$f(x) \neq 7$[/tex] D. all real values except [tex]$x \neq 7$[/tex] and the [tex]$x[/tex] for which [tex]$f(x) \neq-3[/tex]

[Done] BGA and BFC are straight lines. EFG and DCA are parallel lines. Show that triangle ABC is isosceles. Give a reason for each stage of your working. A Angle BAC 48 because corresponding angles are equal 180-114-66 because angles on a straight line add to 180° GAC = 48 because corresponding angles are equal = GFC 114 because vertically opposite angles are equal FCA = 66° because co-interior angles add up to 180° Therefore, ABC is an isosceles triangle B G/48 114 F E C D

[Done] Given that [tex]$\operatorname{Tan} y=\frac{1}{\sqrt{2}}$[/tex], find the value of [tex]$\sin y+\frac{1}{\cos y}$[/tex] such that [tex]$0 < y < 90^{\circ}$[/tex].

[Done] List the four steps to using the word structure strategy when trying to determine the meaning of an unfamiliar word.

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] Solve the system of linear equations by graphing. [tex] \begin{array}{l} y=-\frac{1}{2} x+3 \ y=\frac{1}{2} x-2 \end{array} [/tex]

[Done] Select the correct answer. Terrance kicks a soccer ball at his game. Solve the given equation to find the times, [tex]$t$[/tex], when the ball lands back on the ground, in seconds. [tex]$-16 t^2+40 t=0$[/tex] How many seconds is Terrance's ball in the air?

[Done] We can edit or insert data by clicking on... A. Sheet Tab B. Formula bar C. Name box D. None of above

[Done] 3. Multiply the following and verify the result for x = 2, y = 1, and z = 3. (a) 6yz × (x²y² + 2yz) (b) 9x²(2x³ - 5x²) (c) (3/2)x(10y²x - 100yx²)

[Done] A drop of ink is placed in water and left undisturbed. After some time, the whole water turns blue. Explain the process involved and why it happens even without stirring.