Answer:
its 3.
Step-by-step explanation:
In order to determine the number of boys in the class, first, we set-up an algebraic equation. Let x = number of boys in the class. The equation is then: x + 4x = 45. This is because the number of girls is 4 times greater than the number of boys. After solving the algebraic equation, it is then determined that there are 9 boys in the Chemistry class.
(2x-6) + 4(x-3) {distribute 4 out and expand problem}
2x+6+4x-12 {combine like terms}
6x-6 {your answer}
Answer:
PQ is perpendicular to RS
that is to mean:
PQ⊥RS
Step-by-step explanation:
Answer:
The average rate of change is 
Step-by-step explanation:
Given function that shows the population of a culture of cells,
Where, t represents the number of weeks.
Thus, the average rate of change in the population over the interval [0,24],
From equation (1),
