Answer: 8 textbooks
Step-by-step explanation:
Sold 40 notebooks = 40 x $4 = $160
$800 - $160 = $640 left to sell
$640/$80 (cost of textbook) = 8 textbooks need to be sold
Answer:
-3,75
Step-by-step explanation:
Velocity is the derivative of time displacement
The geometric meaning of the derivative-tangent of the angle of inclination of the tangent to the function.
The product of two integers is an integer; the difference of two integers is an integer; a rational is defined as one integer divided by another non-zero integer.<span>
the diference of two numbers is always rational</span>
