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Questions in Grade High-school

[Free] Q21. Describe how each step of the scientific method can be applied to investigate and solve the problem of a plant's leaves turning yellow. Q22. How does temperature affect the way water behaves, like turning into ice or steam? Share an example of how you have observed these changes in your everyday life.

[Free] If a fencing material costs ₱250 per meter, what will be the cost of fencing a triangular lot as shown? Perimeter = 3s Perimeter = 3 x 50 m = 150 m The perimeter of the lot is ____ m. Cost of fencing = ____ x ₱250 = ____ The total cost of fencing is ₱37,500.

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

[Free] Find the factors of the following numbers: 1. 100 2. 30 3. 12 4. 24 5. 15 Solve the following quadratic equations by factoring. 1. [tex]$-3 m^2+27 m=0$[/tex] 2. [tex]$x^2-2 x=15$[/tex]

[Free] $\left[\begin{array}{cc}-2 & -6 \\ -4 & 3 \\ 5 & 0 \\ 4 & -6\end{array}\right] \cdot\left[\begin{array}{ccc}2 & -2 & 2 \\ -2 & 0 & -3\end{array}\right]$

[Free] The table shows the relationship between the number of trucks filled with mulch $(x)$ and the number of tons of mulch $(y)$ delivered by a landscaping company. Which regression equation models the data? A. $y=4.8 x+3$ B. $y=3 x+4.8$ C. $y=x+20.8$ D. $y=20.8 x+1$ \begin{tabular}{|c|c|c|c|} \hline $x$ & $y$ & $x ^2$ & $x y$ \\ \hline 1.5 & 9.5 & 2.25 & 14.25 \\ \hline 3 & 17 & 9 & 51 \\ \hline 5.5 & 34.5 & 30.25 & 189.75 \\ \hline 6.25 & 31 & 39.06 & 193.75 \\ \hline 7 & 35 & 49 & 245 \\ \hline$\sum x \sim$ & \begin{tabular}{c} $\sum y \sim$ 127 \end{tabular} & \begin{tabular}{c} $\sum x^2 \sim$ 129.56 \end{tabular} & \begin{tabular}{c} $\sum x y \sim$ 693.75 \end{tabular} \\ \hline \end{tabular}

[Free] $\frac{-3}{8}+\frac{1}{8}=$ F. $\frac{1}{4}$ G. $-\frac{1}{4}$ H. $-\frac{1}{2}$ J. $\frac{1}{2}$ K. None of these

[Free] Work out $\frac{2}{5} \times \frac{6}{7}$. Give your answer in its simplest form.

[Free] $z^4+2 z^2 \cos \alpha+1=0

[Free] A cell phone company surveyed 200 random customers on whether they were satisfied with their phone service. They also noted which service plan each customer had. The results are shown in the frequency table below. Use this table to create a relative frequency table. \begin{tabular}{|c|c|c|c|}\hline & Plan A & Plan B & Total \\ \hline Satisfied & 104 & 64 & 168 \\ \hline Not Satisfied & 8 & 24 & 32 \\ \hline Total & 112 & 88 & 200 \\ \hline \end{tabular} Drag each tile to the correct cell in the table. 4\% 16\% 100\% 56\% $12 \%$ 84\% 44\% 32\% 52\% \begin{tabular}{|c|c|c|} \hline & Plan A & Plan B \\ \hline Total & Satisfied & \\ \hline & & Not satisfied \\ \hline & & \\ \hline \end{tabular}