Haiqal membentuk sekeping kadbod kepada segitiga bersudut tegak yang mempunyai panjang hipotenus (x + 4)cm. Panjang sisi lain ialah (2x - y)cm dan x cm masing-masing. Diberi perimeter segi
tiga ialah 24 cm, cari nilai x dan nilai y.

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

The total number of dental clinics total for the last 12 months was recorded