CC - MATHS AND WATER

A scientist has 3 glasses[list][*]One with hot water[/*][*]One with cold water[/*][*]One empty glass[/*][/list]He wants to make warm water as quickly as possible.What should he do?

C) Mix both in the empty glass B) Add hot water to the cold water A) Add cold water to the hot water D) Wait for the hot water to cool down by itself

2. System of linear equations:

A chef needs exactly [b]5 liters[/b] of warm water at a temperature of [b]40ºC[/b] to activate yeast for a baking recipe.[br]She only has access to cold tap water at [b]15ºC [/b]and boiling water from a kettle at [b]90ºC[/b]. Assuming no heat is lost to the surroundings, how many liters of cold water and how many liters of boiling water must she mix together to get the desired volume and temperature?"

CC - MATHS AND WATER

2. System of linear equations:

Información: CC - MATHS AND WATER