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dem82 [27]
3 years ago
13

The mean temperature for the first 7 days in January was 4 °C.

Mathematics
1 answer:
Ksivusya [100]3 years ago
6 0
You are looking for them mean. so 4 plus 5 =9 and you have two so you would ÷ 9 by 2. your answer is 4.5
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If the perimeter (the distance around) of a rectangle is 54 inches and its width is 12 inches, how long is the rectangle?
Liula [17]

Answer:

15 in

Step-by-step explanation: It would be 15 in because 12+12 equals 24 and 50-24=30 and 30 divided by 2 equals 15 in.

3 0
3 years ago
Solve the system, or show that it has no solution. (If there is no solution, enter NO SOLUTION. If there are an infinite number
liberstina [14]

Answer:

The system has an infinite set of solutions (x,y) = (x, \frac{x-5}{4})

Step-by-step explanation:

From the first equation:

20x - 80y = 100

20x = 100 + 80y

x = \frac{100 + 80y}{20}

x = 5 + 4y

Replacing on the second equation:

-14x + 56y = -70

-14(5 + 4y) + 56y = -70

-70 - 56y + 56y = -70

0 = 0

This means that the system has an infinite number of solutions, considering:

x = 5 + 4y

4y = x - 5

y = \frac{x - 5}{4}

The system has an infinite set of solutions (x,y) = (x, \frac{x-5}{4})

8 0
3 years ago
A can of soda is placed inside a cooler. As the soda cools, its temperature T(x) in degrees Celsius is given by the following ex
Lana71 [14]

Answer:

Ans: -21.87 ≅ -22°C

Step-by-step explanation:

T(x)=-22+44e^-0.03x

 

Initial temperature (x = 0):

 

T(0) = = -22 + 44e-0.03(0) = -22 + 44(1) = 22°C

 

After 18 minutes (x = 18):

 

T(18) = -22 + 44e-0.03(18) = -21.87°C ≅ -22°C

6 0
3 years ago
A swimming pool, in the shape of a rectangular prism, is 50 meters long, 25 meters wide, and 3 meters deep. A liter is the same
Vera_Pavlovna [14]
To find liters from meters, multiply the meters by 1000. 1 meter equals 1000 liters. So, the answer would be 375000 from 3,750. 

P.S. IF you meant 750, then it's 750000
6 0
3 years ago
Read 2 more answers
SOMEONE PLS HELP ME WITH ASAP
Levart [38]

Answer:

area of trapezium in terms of x=1/2*x(x+3+x+1)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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