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blsea [12.9K]
3 years ago
15

At 6 a.m., the temperature is 19.4°C. Between 6 a.m. and noon, the temperature rises 3.8°C. Between noon and 6 p.m., the tempera

ture falls 2.5°C.
What is the temperature at 6 p.m.?


1.3°C

6.3°C

13.1°C

20.7°C
Mathematics
1 answer:
Neporo4naja [7]3 years ago
5 0
20.7 degrees C
Step-by-step explanation:
Here's the easiest way to solve. Grab a calculator, or a piece of paper. (its simple math) SOOOO, The start is 19.4. Then, it rises 3.8. So add that to 19.4. That gives you 23.2, BuT, it falls again, back down 2.5 degrees. so take 23.2, and subtract 2.5 from it. That should give you 20.7 degrees.
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Hello,

Let's be

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Answers:

Angle T = 79 degrees

Angle V = 14 degrees

=========================================================

Work Shown:

T + V = 93

(2x+85) + (5x+29) = 93

7x+114 = 93

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7x = -21

x = -21/7

x = -3

This x value is used to find each angle mentioned.

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  • Angle V = 5x+29 = 5(-3)+29 = -15+29 = 14 degrees

As a check, T+V = 79+14 = 93 which confirms our answers.

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