ASS If the \( 7^{\text {th }} \) term of of 19 twice tho -d term and the sum of the first erms 42 , find the Commen dieferen

Recognising, drawing and describing lines of symmetry for different 2D shapes is taught in which grade/s. Grade 6 Grade \( 4 ; 5 \) and 6 Grade 4 Grade 5

13. (a) Sketch the graph of \( y=2|\sin 2 x| \) for \( 0 \leq x \leq 2 \pi \). (b) Draw another graph on the same axes in (a) to determine the number of solutions for equation \( |\sin 2 x|=\frac{3 x}{2 \pi}-1 \) for \( 0 \leqslant x \leqslant 2 \pi \). State the number of solutions for the equation.

Practice Problems: Let \( \mathrm{A}=\{-2,-1,0,1,2 \quad\} \). Define a relation R from A to A by x Ry if and only if 3 does divides \( \mathrm{x}-\mathrm{y} \) for any \( \mathrm{x}, \mathrm{y} \in \mathrm{A} \). a. List down the elements of R . b. Find the domain of R c. Find the range of R d. Create an arrow diagram of R Let \( \mathrm{A}=\{0,1,2,3,4,5\} \). Define a relation R from A to A by \( x R y \) if and only if \( \mathrm{x}+\mathrm{y}<4 \) for any \( \mathrm{x}, \mathrm{y} \in \mathrm{A} \). a. List down the elements of R . b. Find the domain of R c. Find the range of R d. Create an arrow diagram of R 3. If \( \left.f(x)=2 x^{2}+5, g(x)=\sqrt{( } 3 x+1\right) \) and \( h(x)=3 x^{2}+2 x \). Evaluate the following: a. \( (\mathrm{f} \cdot(\mathrm{g} \cdot \mathrm{h})(\mathrm{x}) \) b. \( (\mathrm{go}(\mathrm{goh}))(\mathrm{x}) \) c. \( ((\mathrm{goh})+\mathrm{h})(\mathrm{x}) \)

Три шоколадки, две газировки и четыре пачки чипсов стоят 1090 рублей. а шесть шоколадок, газировка и две пачки чипсов - на 140 рублей дешевле. Сколько стоит набор из трёх шоколадок, газировки и двух пачек чипсов? ответ выразите врублях.

\( \mid \leftarrow \quad \) For the function, \( f(x)=-2 x+5 \), complete parts a through \( c \). a) \( f(x+h)=\square \) (Simplify your answer.)