Answer:
Thermometer reading of the lowest recorded temperature at Oymyakon was -96.2° F
Thermometer reading of the lowest recorded temperature at Prospect Creek was -80° F
Step-by-step explanation:
If the temperature is x° F below 0° F then the thermometer reading is -x° F
It is given that the Lowest temperature recorded at Oymyakon in Russai was 96.2°F below 0°F
So the thermometer reading of the lowest recorded temperature at Oymyakon was -96.2° F
Also it is given that the Lowest temperature recorded at Prospect Creek in Alaska was 80°F below 0° F
So the thermometer reading of the lowest recorded temperature at Prospect Creek was -80° F
Answer:
64
Step-by-step explanation:
(2x + 3y)^2 = 4
xy = -5
4x^2 + 9y^2
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(2x + 3y)^2 = 4 [Start here]
4x^2 +12xy + 9y^2 = 4 [Expand]
4x^2 +12(-5) + 9y^2 = 4 [Substitute xy = -5]
4x^2 -60 + 9y^2 = 4
4x^2 + 9y^2 = 4 + 60 [Rearrange]
4x^2 + 9y^2 = 64 [64 is the value of 4x^2 + 9y^2]