The initial temperature of the experiment is 0°C and as the experiment goes on, the temperature of the liquid is changing at a rate of - 0.8°C per minute.

So, the equation that models the situation is

T = 0 - 0.8t

⇒ T = - 0.8t ................. (1)

Where T is the temperature of the liquid in °C and t is the time of spending after the experiment starts in minutes.

Now, given T = - 10.8°C and we have to find the corresponding time (t) in minutes.

So, from equation (1) we get,

- 10.8 = - 0.8t

⇒ t = 13.5 minutes

Therefore, it will take 13.5 minutes for the liquid to reach - 10.8°C. (Answer)

3 0

3 years ago

One week in the summer Hanna worked 5 days. Each day she earned $2 more than the previous day. She earned a total of $60. How mu

grandymaker [24]

Answer:10$

Step-by-step explanation:

you have to times 5 and 2 u will get do$

5 0

3 years ago

Read 2 more answers

Evaluate the expression for b = 5 <br><br>4b^2

Alex17521 [72]

Answer: 100

Step-by-step explanation:

Sub in 5 for b in the expression

$4b^2\\4(5)^2$

You must do the exponent first as it comes before multiplication in the order of operations

$4(5)^2\\4(25)$

Now multiply

$4(25)\\100$

5 0

3 years ago