In each of the following pairs, determine the temperature change, and whether the temperature increased or decreased. a. 45° F to –10° F b. 35° C to 80° F c. –19° C to 49° C d. 137° C to 0° C e. 5° C to 19° F f. 68° F to 29° C

Question

01-07-2019
Mathematics

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In each of the following pairs, determine the temperature change, and whether the temperature increased or decreased. a. 45° F to –10° F b. 35° C to 80° F c. –19° C to 49° C d. 137° C to 0° C e. 5° C to 19° F f. 68° F to 29° C

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bgisonni bgisonni · Answer 1 · 2019-07-01T22:16:58+02:00

bgisonni bgisonni

01-07-2019

A: decreased

B: increased

C: increased

D: decreased

E: decreased

F: increased

Answer Link

slicergiza slicergiza · Answer 2 · 2019-10-26T14:19:48+02:00

Answer:

∵ Change = final value - initial value,

If change > 0, then the value is increased,

if change < 0, then the value is decreased,

a. 45° F to -10° F,

Change = -10° F - 45° F = -55° F < 0° F,

Thus, temperature is decreased,

b. 35° C to 80° F

∵ 35° C = 95° F ( by the formula (°C × 9/5) + 32 = °F )

Change = 80° F - 95° F = -5° F < 0° F,

Thus, temperature is decreased,

c. -19° C to 49° C,

Change = 49° C - (-19)° C = 68° C > 0° C,

Thus, temperature is increased,

d. 137° C to 0° C,

Change = 0° C - 137° C = -137° C < 0° C,

Thus, temperature is decreased,

e. 5° C to 19° F,

∵ 5°C = 41°F

Change = 19° F - 41° F = -22° F < 0° F,

Thus, temperature is decreased,

f. 68° F to 29° C,

∵ 29°C = 84.2°F

Change = 84.2°F - 68° F = 16.2° F > 0° F,

Thus, temperature is increased.