Is y=8x a direct variation

In Newton's Law of cooling, fraction numerator d T over denominator d t end fraction equals k (T minus T subscript m )the consta

-BARSIC- [3]

Answer:

K-a Positive constant that depends on the area and nature of the surface of the body under consideration.

Step-by-step explanation:

Newtons law cooling describes the rate at which an exposed body changes temperature through radiation which is approximately proportional to the difference between the object’s temperature and its surroundings, provided the difference is small. The formula is given as:

$\frac{dT}{dt}=k(T-T_m)$

where,T- temperature at time t, $T_m$ is temperature of the surrounding and k- A Positive constant that depends on the area and nature of the surface of the body under consideration.

7 0

2 years ago

Simplify. Please and thank you.

Ivan

Cancel r2
(s4t)/(st3)
2 Use Quotient Rule: xa/xb=x^a−b
s^4−1t^1−3
3 Simplify 4−1 to 3
s^3t^1−3
4 Simplify 1−3 to −2
s^3t^−2
5 Use Negative Power Rule:x^−a=1/xa
s^3×1/t2
6 Simplify
(s3)/(t2)
Done so the answer is a. then

8 0

3 years ago

Julie, a police officer, has the following work pattern. She works 3 days, has 4 days off, then works 4 days, then has 3 days of

zalisa [80]

Answer:

See below.

Step-by-step explanation:

For each day number, Y means working, and N means off

Day

1 Y

2 Y

3 Y

4 N

5 N

6 N

7 N

8 Y

9 Y

10 Y

11 Y

12 N

13 N

14 N

15 Y

16 Y

17 Y

18 N

19 N

20 N

21 N

22 Y

23 Y

24 Y

25 Y

26 N

27 N

28 N

29 Y

30 Y

31 Y

32 N

33 N

34 N

35 N

36 Y

37 Y

38 Y

39 Y

40 N

41 N

42 N

43 Y

44 Y

45 Y

46 N

a. Today is day 1. 30 days from today is day 31.

She works on day 31, so she does work 30 days from today.

b. 45 days from today is day 46. She is off on day 46, so she will be off 45 days from today.

8 0

2 years ago

Read 2 more answers

Carrie wished to build a rectangular dog run along theside of her garage. The garage will serve as one side of the fence. If she

Nat2105 [25]

Given:

Carrie has 180 ft of the fencing and wishes the fence to be 4times as long as it is wide.

To Find:

The area in square feet that the fencing encloses.

Answer:

The fence encloses 3600 sq ft.

Step-by-step explanation:

Let x denote the length of the dog run and y denote the width of the dog run.

Given that the garage wall serves as one side of the dog run, we are left with 3 other sides to instal the fence.

Carrie has 180ft of fencing with her, so the sum of the lengths of the 3 sides has to be equal to 180. We can represent this in the form of an equation as

$x+y+y=180\\\\x+2y=180\\\\x=180-2y$