In converting temperature from Fahrenheit to Celsius, the formula is used. What is the significance of in the formula?
When a cyclist was moving in a straight line with a uniform velocity, the distance between the bicycle and a fixed point was registered over periods of time from the moment the cyclist took off. Find the time when the cyclist was at a distance of 140 km from the fixed point and the distance between the start point of the bicycle and the fixed point.
|Distance between Bicycle and Fixed Point (kilometres)||90||110||130||150|
|Time Elapsed (hours)||1||2||3||4|
In a stationery shop, you can mix and match your own gifts. Each gift comprises of a pencil case, and a mixture of pens, colouring pencils, and rubbers. The pencil case costs $3 and Fady spends $15 on his gift.
Let be the number of pens Fady includes in his gift, the number of colouring pencils, and the number of rubber.
Fady’s gift satisfies the following equations:
How many items did Fady put in the pencil case?
What is the cost of an rubber?
What is the cost of a colouring pencil?