Questions in Grade High-school

Questions in Grade High-school

[Done] 5. When we breathe in, our chest muscles move upwards and outwards and our diaphragm moves downwards. Explain why this is. 6. In which part of the respiratory system does the oxygen from the air we breathe in pass into our blood? Tick the correct answer. - alveoli - bronchus - trachea 7. The circulatory system helps oxygen-rich blood travel around our body to different organs. - true - false 8. Why do we breathe out carbon dioxide?

[Done] If the quadratic equations, ax^2 + bx + c = 0 and bx^2 + cx + a = 0, where a, b, c are distinct, have one common root, then what is the common root?

[Done] Given that [tex]$\tan \theta=-1$[/tex], what is the value of [tex]$\sec \theta$[/tex], for [tex]$\frac{3 \pi}{2}\ \textless \ \theta\ \textless \ 2 \pi$[/tex] ? A. [tex]$-\sqrt{2}$[/tex] B. [tex]$\sqrt{2}$[/tex] C. 0 D. 1

[Done] How are the graphs of the functions [tex]$f(x)=\sqrt{16}^x$[/tex] and [tex]$g(x)=\sqrt[3]{64}^x$[/tex] related? A. The functions [tex]$f(x)$[/tex] and [tex]$g(x)$[/tex] are equivalent. B. The function [tex]$g(x)$[/tex] increases at a faster rate. C. The function [tex]$g(x)$[/tex] has a greater initial value. D. The function [tex]$g(x)$[/tex] decreases at a faster rate.

[Done] Note of ICT chapter?

[Done] What is the highest common factor (HCF) of 15 and 22?

[Done] Explain how to graph the given piecewise-defined function. Be sure to specify the type of endpoint each piece of the function will have and why. [tex]f(x)=\left\{\begin{array}{ll} -x+3, & x\ \textless \ 2 \\ 3, & 2 \leq x\ \textless \ 4 \\ 4-2 x, & x \geq 4 \end{array}\right.[/tex]

[Done] Read the table and answer the questions. | | Flock X | Flock Y | Flock Z | |---|---|---|---| | Total Pieces of Food Eaten | 57 | 153 | 90 | | Food Percentage* | $\square$ % | $\square$ % | $\square$ % | | Simulated Number of Birds in Flock for 2nd Generation** | $\square$ | $\square$ | $\square$ | * Divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** Multiply the food percentage for each flock by the total number of birds (30).

[Done] Evaluate the function for the given value. [tex] \begin{array}{c} y=4 \cdot 3^x \text { for } x=3 \\ y=[?] \end{array} [/tex]

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