Vicente sasta \( \$ 210.399 \) en un pantalón y una camisa. No sabe el precio de cada prenda, pero si sabe que la camisa cuesta dos quintas partes de to que cuesta el pantalón. ¿Cuánto cuesta el pantalón? (A) \( \$ 97.560 \) (B) \( \$ 118.900 \) (C) \( \$ 60.114 \) (D) \( \$ 150.285 \)

\( \left. \begin{array} { l } { ( x + y ) ^ { 3 } = z } \\ { ( y + z ) ^ { 3 } = x } \\ { ( z + x ) ^ { 3 } = y } \end{array} \right. \)

Cho hàm số \( f x=\left\{\begin{array}{ll}\frac{\sqrt{4 x+1-1}}{a x^{2}+(2 a+1) x 0} & \text { khi } x \neq 0 \\ 3 & k h i \quad x=0\end{array}\right. \). Biết rằng \( a \) là giá trị đề hàm số liên tu \( =0 \), hãy tìm số nghiệm nguyên của bất phương trình \( x^{2}-x+36 a<0 \).

\( k+9, k-6 \) र 4 एउटा गुणोत्तर अनुक्रमका \( k+9, k-6 \) and 4 are the three terms of a geometric progression (i) \( k \) को मान पत्ता लगाउनुहोस् । (Find the value of \( k \).) (ii) समान अनुपात पत्ता लगाउनुहोस् । (Find the common ratio.) (iii) चौथो पद पत्ता लगाउनुहोस् । (Find the value of fourth term.) odel 3 Problems based on finding the position of a given term i)

\( \left. \begin{array} { l } { x ^ { 2 } - y ^ { 2 } + y } \\ { = 3 x ^ { 2 } y - y ^ { 3 } + x y } \end{array} \right. \)

Three quantities \( t, x \) and \( y \) are such that \( t \) varies directly as \( x \) and invisely as the square root of \( y \). Find the percentage decrease in \( t \) if \( x \) decreases by \( 44 \% \).