1.Sabiendo que A es directamente proporcional a la raíz cúbica de B. Determina el valor de B cuando A es 4, si cuando A es 6 el valor de B es 27. 2.La eficiencia de una persona es directamente proporcional al sueldo que recibe, e inversamente proporcional a la raíz cuadrada del tiempo que emplea en realizar un trabajo. Si una persona con una eficiencia del 60% tiene un sueldo de 2400 soles y emplea 25 días en hacer su trabajo. ¿Cuántos días empleará otra persona con 75% de eficiencia y un sueldo de 1800 soles?

3.Si "x" es la cuarta diferencial de 20; 16 y 22, determina el valor de "y" sabiendo que es la media proporcional de 8 y "x".

4.El promedio de 5 números es 18. Si agregamos un sexto número el promedio aumenta en 4 unidades. ¿Cuál es el número agregado?

the answer would be 150 books

step-by-step explanation:

if you divide 300 by 2 you will get 150

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation:

p ÷ r = tan(x)

step-by-step explanation:

given that there is a figure below shows a right triangle: a right triangle is shown with hypotenuse equal to q units and the length of the legs equal to p units and r units.

graph is missing so i will create the graph as per given information.

the angle between the legs having lengths p units and q units is y degrees. the angle between the legs having lengths r units and q units is x degrees.

now we need to find about what is p ÷ r equal to.

so we can use trigonometric ratio tan(x)=[altitude]/[base] to find the value of p ÷ r, because p is the altitude and r is the base.

p ÷ r=tan(x)

hence final answer is p ÷ r=tan(x).