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ExtremeBDS [4]
3 years ago
11

One day the temperature was 15 degrees at 7am. It rose by 28 degrees by noon, but fell by 55 degrees by midnight when a cold fro

nt moved in. What was the temperature at midnight?
Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
6 0

Answer:

- 12 degrees.

Step-by-step explanation:

Given:

Temperature  was at 7 am = 15 degrees

Temperature rose at noon = 28 degrees

Temperature fell at midnight = 55 degrees

Solution:

Temperature  was at 7 am = 15 degrees

Temperature  was at noon = 15 + 28

                                             = 43 degrees

Temperature  was at midnight =  43 - 55                   

                                                   = - 12 degrees

Thus, temperature  was at midnight  = - 12 degrees.

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A cell phone package charges $39 even if 0 minutes are used during the month. Each additional minute of talk time adds $0.07.
Orlov [11]

Answer: the slope intercept form for this situation is y = 0.07x + 39

Step-by-step explanation:

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7 0
3 years ago
. Could someone please explain this to me in detail. I am very confused. Thank you so much!. . A candle is 17 inches tall after
andrew-mc [135]

The generic equation of the line is:

H-H0 = m (T-T0)

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m: slope of the line

(T0, H0): ordered pair belonging to the line.

The slope of the line is:

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Substituting values we have:

m =\frac{15-17}{5-3}

Rewriting:

m =\frac{-2}{2}

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Then, choosing an ordered pair we have:

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H=-8+20

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Answer:

( 2 , 2 )

Step-by-step explanation:

Solve the eqaution :

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