Choose the equation that shows a step in the

Mathematics

1 answer:

Schach [20]2 years ago

4 0

Answer:

Darul Huda Islamic School AlAin is a great place to work for and it is a great place to place to work for and it is a great place to work for and it is a great place to work for and it is a great place to work for and it is it is a great place to work for and it and it helps to know that they are they are very easy to for and and they are they are very good very good good at helping helping them them and they are they are they are very good very good at the نفس الآخر كنت هناك للأطفال وآبائهم لبضع سنوات وهم جيدون جدا جدا في نفس الطريق قبالة ولديهم جيدة

Step-by-step explanation:

Sent from my from my Huawei Huawei is a great place to work for and it is a great a great place to place to work for work for and it is a great place to work for and it is a great place to work for and it is a great place to work for and it is it is a great a great place to place to work for and it is a great place to work for and it is a great place to work for work for and it is a great place to work for and it is a great place to work for and it is a great place great place to work to work with with with with you and your family and your family family and friends with you and your family your family is is very important important to us and we are very happy to be able to able to make you feel like a like a single word in a way that you can get a little help from our beautiful and beautiful lovely wife and your beautiful family friends and family with you all the time for your wedding and wedding celebration

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Which of the following ordered pairs could represent the x-intercept of a function?

bearhunter [10]

The answer is (15,0) because the format is (x,y) so (15,0) means that it is on the x axis only !

6 0

2 years ago

A welder drops a piece of red-hot steel on the floor. The initial temperature of the steel is 2,500 degrees Fahrenheit. The ambi

sergey [27]

Answer: After 18.05 minutes, the temperature of steel becomes 100 degrees.

Step-by-step explanation:

Since we have given that

Initial temperature = 2500

At t = 0,

we get that

$f(t)=Ce^{-kt}+80\\\\2500=C+80\\\\2500-80=C\\\\2420=C$

After 2 minutes, the temperature of the steel is 1500 degrees.

so, it becomes,

$1500=2420e^{-2k}+80\\\\1500-80=2420e^{-2k}\\\\\dfrac{1420}{2420}=e^{-2k}\\\\0.587=e^{-2k}\\\\\ln 0.587=-2k\\\\-0.533=-2k\\\\k=\dfrac{0.533}{2}\\\\k=0.266$

So, We need to find the number of minutes when the temperature of steel would be 100 degrees.

So, it becomes,

$100=2420e^{-0.266t}+80\\\\100-80=2420e^{-0.266t}\\\\20=2420e^{-0.266t}\\\\\dfrac{20}{2420}=e^{-0.266t}\\\\\ln \dfrac{20}{2420}=-0.266t\\\\-4.8=-0.266t\\\\t=\dfrac{4.8}{0.266}\\\\t=18.05$