11. A meter stick casts a shadow P. m long at the same time a flagpole casts a shadow 7.7 m long. The triangle formed by the meterstick and its shadow is similar to the triangle formed by the flagpole and its shadow. How tall is the flagpole?

Tentukan jenis segitiga yang panjang sisi-sisinya dituliskan sebagal be \( 6 \mathrm{~cm}, 9 \mathrm{~cm} \), dan 10 cm \( 15 \mathrm{~cm}, 18 \mathrm{~cm} \), dan 24 cm

The yearbook club has 5 members returning from last year. They set up a booth in the cafeteria to recruit more members, and an average of 3 new members sign up each day. Which best describes why the graph relating the total number of members on the yearbook club, \( m \), and the number of days the booth is set up, \( d \), will be continuous or discrete? The graph will be continuous because an end day for the booth being set up is not given in the description. The graph will be continuous because there can be any number of people signing up each day since we are only given the average. The graph will be discrete because some day the number of available people to sign up for the club will run out. The graph will be discrete because there is no such thing as a partial person to sign up and the booth is set up once each day for sign ups.

19. La cantidad de carga, \( Q \), en coulombs (C) que ha pasado por un punto de un alambre hasta el tiempo \( t \) (medido en segundos) se expresa con \( Q(t)=t^{3}-2 t^{2}+6 t+2 \). Encuentre la corriente cuando (a) \( t=0.5 \mathrm{~s} \mathrm{y} \) (b) \( t=1 \mathrm{~s} \). [Véase el ejemplo 3 . La unidad de la corriente es el ampere ( \( 1 \mathrm{~A}=1 \mathrm{C} / \mathrm{s}) \).] ¿En qué momento la corriente es la más baja?

8) Al desarrollar \( 6 \sqrt{10}: 3 \sqrt{5} \) resulta:

12. Da un punto P esterno ad una circonferenza traccia le tangenti ad essa in modo che siano perpendicolari tra loro e indica con A e B i punti di tangenza. Che tipo di quadrilatero è il quadrilatero PAOB e perché? Sapendo che il raggio misura 18 cm , calcola il perimetro e l'area del quadrilatero PAOB. ( \( 72 \mathrm{~cm} ; 324 \mathrm{~cm}^{2} \) ) 13. Da un punto P esterno ad una circonferenza traccia le tangenti ad essa ed indica con He Ki punti di tangenza. Sapendo che il raggio della circonferenza misura 7 cm e che il segmento OP misura 25 cm , calcola il perimetro e l'area del quadrilatero PHOK. \( \left(62 \mathrm{~cm} ; 168 \mathrm{~cm}^{2}\right) \)