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A 10kg block of material is heated by an electric heater rated at 90w lf the temperature of the block rais by 15⁰c and no heat energy last to the surrounding for how many long is the heater switehed on​

A 10kg block of material is heated by an electric heater rated at 90w lf the t…

Naga has n marbles. Panav has three times as many marbles as Naga. Naga loses 5 marbles and Panav buys 10 marbles. Together they now have more than 105 marbles. Write down and solve an inequality in n.

Naga has n marbles. Panav has three times as many marbles as Naga. Naga lose…