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frosja888 [35]
2 years ago
10

1) A covered hot cup of coffee will cool to the temperature of the room as governed by a physics principle known as Newton's Law

of Cooling. The data from an experiment is shown in the table. If the room temperature is 73 degrees Fahrenheit, which statement is correct?A) The relationship could be linear with c ≈ 83oF.B) The relationship could be linear with c ≈ 63oF.C) The relationship could be exponential with c ≈ 83oF.D) The relationship could be exponential with c ≈ 63oF.
Mathematics
1 answer:
dlinn [17]2 years ago
6 0

Answer:

f(t) = 80 + 120 e^(-0.08 t)

Step-by step explanation:

The exponent is negative, so this is an example of exponential decay.  As t increases, the exponent becomes more and more negative.  So e^(-0.08 t) gets closer and closer to 0.  Meaning f(t) gets closer and closer to 80.

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If you can travel 500 miles in 1 hour, how long will it take you to travel 800 miles
zhenek [66]

Answer:

1 hours and 30 minutes

Step-by-step explanation:

7 0
3 years ago
There were 230 shoppers at an electronics store on opening day. The specials that day allowed 21​% of shoppers to receive a free
anastassius [24]

Answer:

a) About 48 of the shoppers, that is 230\frac{21}{100} of the shoppers, received a free set of​ earbuds.

b) About 58 shoppers, that is \frac{230}{4} received ​$5 off their first​ purchase.

Step-by-step explanation:

a. About how many shoppers received a free set of​ earbuds?

21% out of 230. So

230\frac{21}{100} = 2.3(21) = 48.3

About 48 of the shoppers, that is 230\frac{21}{100} of the shoppers, received a free set of​ earbuds.

b. About how many shoppers received ​$5 off their first​ purchase?

25% out of 230, so:

230\frac{25}{100} = 230\frac{1}{4} = \frac{230}{4} = 57.5

About 58 shoppers, that is \frac{230}{4} received ​$5 off their first​ purchase.

5 0
3 years ago
1.<br> Find the product of -12 and -6.
Alborosie

Answer:

72

Step-by-step explanation:

Multiply. Note that when you multiply two negative numbers, the answer will be positive.

Combine:

-12 * -6 = 12 * 6 = 72

72 is your answer.

~

5 0
3 years ago
Y=2x+1<br> answers anyone?
laila [671]

Answer: y= 2

Step by step: Multiply 2 and 1 to get 2

6 0
3 years ago
The points (19,-2) and (0,0) fall on a particular line. What’s is it’s equation in slope intercept form?
Mice21 [21]

Answer:

y=-2/19x

Step-by-step explanation:

slope=(y1-y2)/(x1-x2)=-2/19

y-intercept=0

y=-2/19x+0

3 0
3 years ago
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