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AlladinOne [14]
3 years ago
8

IVE BEEN ASKING SINCE YESTERDAY!! LITTERALLY!!! EXTREAMLY EASY I AM JUST AFRAID TO GET THIS WRONG SO IF YOU COULD TAKE A MINUTE

AND HAVE SOME PITY FOR ME PLS COME HELP AND LOOK!!! WHERE THE EXPERTS!!! THEY DONT COME HELP ANYMORE!!
(yes i know their is some black i did that purposely just do what is not black)
click the image if you want a closer look

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
5 0

Answer: sorry there isn’t color but you can probably figure out which colors to use for each one

Step-by-step explanation:

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A cup of coffee at 85 degrees Celsius is placed in a room at 25 degrees Celsius. Suppose that the coffee cools at a rate of 5 de
bezimeni [28]

Answer: k = - 6.6667

Step-by-step explanation:

this is quite very simple to begin. I would encourage you take other practice questions similar to help with understanding it.

let us begin.

Given that ;

dT/dt = k ( Tm - T)       where Tm is the temp of the medium

dT/dt = 5 degrees Celsius per minute    when T = 70

so we have that, 5 = k ( 25 - 70)

remember to convert 5 degree celsius per minute to seconds

we have that;

5*60(sec) = k ( 25 - 70)  

k = 5*60 / ( 25 - 70)

k = - 6.6667

note K is negative because we consider it for cooling process  (temp decreasing).

cheers i hope this helps!!!

3 0
3 years ago
in justin's school,0.825 of students participate in a sport. if there are one thousand students in justin's school, how many pat
goblinko [34]
175 because 1,000-825=175
7 0
2 years ago
The ratio of boys to girls in home room is 2:3. If there are 8 boys how many girls are there .
Serhud [2]

Answer:

12 girls

Step-by-step explanation:

multiply 8 by 3/2 to get 12.

6 0
3 years ago
Read 2 more answers
Jameson has 4300 in credit card debt with 14% interest that he wants to pay off in 24 months. He will need to make monthly payme
lakkis [162]

Answer:

Total cost of repayment  = 4955.04

Net interest paid = 655.04

Step-by-step explanation:

Given

Amount taken on loan = 4300

Repayment plan

Monthly installment= 206.46

Yearly installment  = 206.46 * 12 = 2477.52

Rate of interest per year = 14 %

Time Period for repaying the loan = 2 years

The total amount repaid by Jameson at the rate of 206.46 per month for next 24 months

= 206.46 *24\\= 4955.04

Net interest paid

= 4955.04 - 4300\\= 655.04

Total cost of repayment  = 4955.04

Net interest paid = 655.04

8 0
2 years ago
How can you use scale models to solve problems
tino4ka555 [31]
<span>Scale drawings make it easy to see large things on paper, like a house or road</span>
6 0
3 years ago
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