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Aliun [14]
3 years ago
10

After heating up in a teapot, a cup of hot water is poured at a temperature of 201^\circ201 ∘ F. The cup sits to cool in a room

at a temperature of 67^\circ67 ∘ F. Newton's Law of Cooling explains that the temperature of the cup of water will decrease proportionally to the difference between the temperature of the water and the temperature of the room, as given by the formula below: T=T_a+(T_0-T_a)e^{-kt} T=T a ​ +(T 0 ​ −T a ​ )e −kt T_a=T a ​ = the temperature surrounding the object T_0=T 0 ​ = the initial temperature of the object t=t= the time in minutes T=T= the temperature of the object after tt minutes k=k= decay constant The cup of water reaches the temperature of 190^\circ190 ∘ F after 3 minutes. Using this information, find the value of kk, to the nearest thousandth. Use the resulting equation to determine the Fahrenheit temperature of the cup of water, to the nearest degree, after 5 minutes. Enter only the final temperature into the input box.
Mathematics
1 answer:
Nitella [24]3 years ago
8 0

Answer:

This is to complex

Step-by-step explanation:

sorry for not being able to help

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Line QR goes through points Q(0, 1) and R(2, 7). Which equation represents line QR?
kari74 [83]
For this we will use equation that gives us equation of line that goes through 2 given points.

that equation is:
 y - y1= \frac{y2 - y1}{x2 - x1} (x - x1)

now we implement our given coordinates.
let Q be point 1 and R be point 2
y - 1 = 6/2(x - 0)
y - 1 = 3x

Answer is b.
5 0
3 years ago
Brainiest If Correct + 50pts ---The cylinder with base radius 5 and height 12 is inscribed in a right rectangular prism. Find th
Romashka [77]

Answer:

SA = 680 units^2

V =1200 unit^3

Step-by-step explanation:

If the radius is 5 then the diameter is 2r = 2*5 = 10

The height would remain the same

Surface area of a prism is given by

SA = 2 (lw+lh+hw)

l =d = 10   w = d = 10   h = 12

SA = 2 ( 10*10 + 10 * 12+ 12* 10)

SA = 2( 100+120+120)

SA = 2(340)

SA = 680 units^2

V = l*w*h = 10*10*12 =1200 unit^3

4 0
4 years ago
4(5.8 - 9x) + 8.2 + 22x
ale4655 [162]

Answer:

157 - 70x

 —————————

     5    

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which expression below has the LEAST value?
Alexandra [31]

Answer: A

Step-by-step explanation:
Your answer is A.

Value of 3.78 x 10=37.8

Value of 5.99 x 102=699.98

value of 7.35 x 10-12=61.5

Value of 9.46 x 10-10=84.6.

Least value to greatest value

3.78 x 10=37.8 Least value

7.35 x 10 - 12=61.5 Sencond least value

9.46 x 10 - 10=84.6  Sencond greatest value

5.99 x 102=699.98  Greatest value

Hope it helps have a great day:)

7 0
2 years ago
8. Jasmine is playing a game where she moves a piece on a coordinate grid. Over three turns, she moves her
olga2289 [7]

Answer:

28 units.

Step-by-step explanation:

The distance between two given points (x_{1},y_{1}) and (x_{2},y_{2}) is given by the formula  

\sqrt{(x_{1} - x_{2})^{2} + (y_{1} - y_{2})^{2}}

So, the distance between points (-2,-4) and (-1,6) is

\sqrt{(-2 - (- 1))^{2} + (-4 - 6)^{2}} = \sqrt{101} = 10.05 units.

Now, the distance between points (-1,6) and (3,8) is

\sqrt{(-1 - 3)^{2} + (6 - 8)^{2}} = \sqrt{20} = 4.47 units  

Again, the distance between the points (-2,-4) and (3,8) is

\sqrt{(- 2 - 3)^{2} + (-4 - 8)^{2}} = 13 units.

Therefore,the perimeter of the triangle is (10.05 + 4.47 + 13) = 27.52 ≈ 28 units. (Approximate)

7 0
4 years ago
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