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Lelu [443]
3 years ago
15

What is 0.6288 rounded to the nearest hundredth? ​

Mathematics
1 answer:
OverLord2011 [107]3 years ago
3 0

Answer: 0.63

Step-by-step explanation:  

Find the number in the hundredth place  

2

and look one place to the right for the rounding digit  

8

. Round up if this number is greater than or equal to  

5

and round down if it is less than  

5 .

Hope this helped! :)

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2 minutes and 45 seconds simplify so they have a common unit.
sp2606 [1]

Answer: 165 secs

Step-by-step explanation:

2 mins has 120 secs in it

120 + 45 = 165

3 0
3 years ago
On a hot Saturday morning while people are working​ inside, the air conditioner keeps the temperature inside the building at 24
Helen [10]

Answer:

30.06 degree Celsius at 4:00 PM.

Step-by-step explanation:

We have been given that on a hot Saturday morning while people are working​ inside, the air conditioner keeps the temperature inside the building at 24 degrees C. At noon the air conditioner is turned​ off, and the people go home. The temperature outside is a constant 35 degrees C for the rest of the afternoon. The time constant for the building is 5 ​hr. We are asked to find the temperature inside the building at 4:00 PM.

We will use Newton's law of cooling to solve our given problem.

T(t)=M_0+(T_0-M_0)e^{-kt}, where

T(t) = Temperature after t hours.

M_0 = Temperature of surrounding environment,

k = Time constant.

\frac{1}{k}=5\Rightarrow k=\frac{1}{5}

Upon substituting our given values in Newton's cooling law, we will get:

T(t)=35+(24-35)e^{-\frac{t}{5}}

T(t)=35-11e^{-\frac{t}{5}}

To find the temperature at 4:00 pm, we will substitute t=4 in our formula as:

T(4)=35-11e^{-\frac{4}{5}}

T(4)=35-\frac{11}{e^{\frac{4}{5}}}

T(4)=35-\frac{11}{2.2255409284924674}

T(4)=35-4.9426186052894379601

T(4)=30.05738139471

T(4)\approx 30.06

Therefore, the temperature inside building would be approximately 30.06 degree Celsius at 4:00 PM.

5 0
3 years ago
BRAINLIEST ASAP! PLEASE HELP ME :)
Mariana [72]

Answer:

Yes, the given measures can be the lengths of the sides of a triangle.

Step-by-step explanation:

hope this helps

5 0
3 years ago
Read 2 more answers
If dy/dx = tan(x), then y=
Vikentia [17]
Dy/dx= tanx, can be answered directly using the derivatives of trigonometric functions but this is how the answer is derived
         =(sinx/cosx) basic trigonometric function
         = [cosx cox+sinxsinx]/cos^2x
         =[cos^2x+sin^2x]/cos^2x
cos^2+sin^2x = 1 ; fundamental trigonometric identities
         = 1/cos^2x; reciprocal relations
          = sec^2x+C
The answer is letter B.sec^2x+C
6 0
3 years ago
Read 2 more answers
Please answer what is in the picture :)
iren2701 [21]

Answer:

i cant see the question to ypur test that well but wish you the best

7 0
3 years ago
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