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Ksenya-84 [330]
3 years ago
10

Please help school starts in a couple hours

Mathematics
2 answers:
Zina [86]3 years ago
8 0
I think k divided by 2 so D.
zavuch27 [327]3 years ago
7 0

Answer:

C and D

Step-by-step explanation:

C. 1/2 x k is equal to k/2 because if we input a number for k, we get the same output in both of them.

1/2 x 1 = 1/2

0.5 = 0.5

D. k ÷ 2 is the same as k/2 because a denominator of the fraction functions as the divider.

1 ÷ 2 = 1/2

0.5 = 0.5

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16. Model Real Life Your aunt and uncle
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The amount of each payment is $699.

What is payment?

Payment refers to the exchange of something of value as a condition of a contract. While one party pays money and receives something else of value, the other party gets paid in return for delivering a good or service. Physical currency was once the most common form of payment, but nowadays most forms of payment use technology.

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3 0
1 year ago
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
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