A matrix is singular if a. The determinant is greater than zero b. The determinant is less than zero c. The inverse exists d. If none of the rows are scalar multiples of each othe e. If it is a square matrix इ f. All of the other options are satisfied g. None of the other options are satisfied

e. \( 4-3(x-2)<3+2(x+6) \)

Se a taxa de juros nesse financiamento foi de \( 10 \% \) ao ano c o periodo de quitação foi de 5 anos, é correto dizer que o comprador pagará \( 50 \% \) a mais que o valor que pagaria à vista?

Sea \( f \) una función cuadrática definida en el conjunto de los números reales. Si la gráfica de \( f \) intersecta al eje \( Y \) en el punto \( (0,10) \) y al eje \( X \) en los puntos \( (-5,0) \) y \( (1,0) \), ¿cuál es la expresión de \( f \) ? A) \( f(x)=x^{2}+4 x+5 \) B) \( f(x)=-2 x^{2}-8 x+10 \) C) \( f(x)=x^{2}-x+5 \) D) \( f(x)=-2 x^{2}-5 x+10 \)

5 A leather briefcase was originally priced at \( \$ 199 \), and is reduced to \( \$ 167 \) in a sale. What is the percentage discount?

From A on top of a building 50 m high, the angle of elevation of B on a taller building is \( 34^{\circ} \). If the buildings are \( 75,8 \mathrm{~m} \) apart, how high is B above street level?