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Stella [2.4K]
3 years ago
5

You place a cup of 200 degrees F coffee on a table in a room that is 67 degrees F, and 10 minutes later, it is 195 degrees F. Ap

proximately how long will it be before the coffee is 180 degrees
Mathematics
1 answer:
Serga [27]3 years ago
7 0

Answer:

It will take a total of twenty minutes

Step-by-step explanation:

if it cools from 200 to 195 in five minutes then times two is twenty which means it's cooled to 190.

180 is twenty less then 200 so if it takes ten minutes to cool down by ten then multiply this by two and you get 180 and know it's cooled by twenty minutes

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Answer:

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3 years ago
Graph each of the following lines without using a table of values a. y = 2⁄3x - 5 b. 6x - 2y + 5 = 0
DedPeter [7]

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b.\,\, 6x - 2y + 5 = 0\\\\\text{Turn the equation into slope form:}\\\\ 6x - 2y + 5 = 0\\\\-2y=-6x-5\\\\y=3x+5/2\\\\\text{The beginning point is at 5/2, or 2.5}\\\\\text{Place the point at 2.5 on the y-axis}\\\\

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\text{I hope this helps, have a good day.}

3 0
3 years ago
Kate scored 85,78,72, and 81 on 4 math tests. What score does she need on the fifth test to have at least an 80 average?
Elan Coil [88]

I am not good in this kind of question so maybe 84?

suppose the full marks for each of them is 100 so for 5 of them it will be 500 cause if you if you multiply 100 full marks by 5 it will be 500

so the answer to this question is maybe 84?

cause if you add all of them with 84 the outcome will be 400 and if you divide the 400 by 5 it will be 80

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3 years ago
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5 0
4 years ago
Read 2 more answers
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