Question

Raul is performing an experiment. He pours water into a glass and measures the temperature of the water at 72.3°F. Then he adds a few ice cubes to the glass of water. He measures the temperature of the water again and finds that it has changed by -39.1°F.

Simplify the expression in (-30) + 70 + (-9) + 2 +(-0.1) + 0.3 = 2 + (-9) + 70 + (-0.1) + 0.3 + 70

Answer 1

[70 + (-30)] + [2 +(-9)] + [0.3 + (-0.1)]

=

40 + (-7) + 0.2

=

33 + 0.2

=

33.2°F

The temperature of the water dropped to 33.2°F after Raul added the ice cubes.

Explanation:

Answer 2

When you add the left side of the equation, you get 33.2 because 70-30 is 40, 40+2 is 42, 42-9 is 33, 33+0.3 is 33.03, 33.3-0.1 is 33.2.

Explanation: