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3 years ago

8

The temperature in the late afternoon was −7.5°C. It dropped 5 degrees by early evening and then dropped another 8.5 degrees by

midnight. What was the temperature at midnight?

1 answer:

Reil [10]3 years ago

4 0

Answer:

-21 is the correct answer

Step-by-step explanation:

-7.5 - 5 - 8.5 = -21

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3 years ago

calculate the angles of a triangle if the angle alpha is 16 ° greater than the angle beta and the angle gamma is 52 ° smaller th

lakkis [162]

Answer:

88°, 72°, 20°

Step-by-step explanation:

<u>Angle alpha is 16° greater than the angle beta:</u>

α = β + 16°

<u>Angle gamma is 52° smaller than the beta:</u>

γ = β - 52

<u>Sum of angles is 180°, substitute α and β:</u>

α + β + γ = 180°
β + 16° + β + β - 52° = 180°
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3β = 216°
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<u>Then</u>

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