Marian se deplaseaza ,cu automobilul,pe autostrada.La ora 10 si 35 minute el se afla la kilometrul 25 .Dupa un interval de timp,la ora 11 si 15 minute,el se afla la kilometrul 100.Calculati :durata deplasarii,distanta parcursa de Marian si viteza medie a acestuia(exprimata in unitati de SI)

Answers

Answer 1

Answer:

Step-by-step explanation:

If Marian travels, by car, on the highway. At 10 and 35 minutes he is at kilometer 25. After a period of time, at 11 and 15 minutes, he is at kilometer 100.

Total distance covered = 25km + 100km

Total distance covered by Marian = 125km

Total time taken by marian = 10hr 35min + 11hr + 15min

Total time taken by marian = (10+11)hr + (35+15)min

Total time taken by marian = 21hr 50mins

Total time taken by marian = 21 * 50/60 hr

Total time taken by marian (Duration) = 21.833hr

Average speed = Total distance covered/Total time taken

Average speed = 125/21.833

Average speed = 5.725km/hr

Convert to m/s

5.725km/hr = 5.725*1000/3600

5.725km/hr = 5725/3600

5.725km/hr = 1.5903 m/s

Hence the average speed expressed in SI unit is 1.5903 m/s

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- 18 < - 3x + 9 < 12

N Squared - N = 90
N =?

Answers

n^2 - n = 90
n^2 - n - 90 = 0
(n - 10)(n + 9) = 0

n - 10 = 0
n = 10

n + 9 = 0
n = -9

answer is : n = 10 and n = -9

If a bottle of medication must be stored at a temperature cooler than 45 degrees f, what is the Celsius temperature at which the medication must be stored

Answers

We must first convert this degrees Farenheit to degrees Celscius by using the available formula according to its conversion. Farenheit to Celscius is solved by the formula using: (°F - 32) multiplied by 5/9 =°C. Then, substitute the values in the formula from the given of 45 degrees Farenheit which answer would be 7.2°C.

LINEAR EQUATIONS HELP

Answers

Hey there! :)

Answer:

-1/3.

Step-by-step explanation:

Find the slope of the line using the slope formula:

$m = \frac{\text{rise}}{\text{run}} = (y_2 - y_1)/(x_2 - x_1)$

Use two points from the graph and plug them into the equation. We can use the points (0, 3) and (3, 2):

$m = (2 - 3)/(3 - 0)$

Simplify:

m = -1/3. This is the slope of the line.

At a concert, there are 3 times as many women as men. 3/5 of the men and 1/3 of the women wear glasses. There are 120 more women wearing glasses as men wearing glasses. How many people are at the concert?

Answers

w = women
m = men

w = 3m (from the first sentence)

1/3w - 3/5m = 120
subsitute 3m for w
1/3(3m) - 3/5m = 120
m - 3/5m = 120
2/5m = 120
2m = 600
m = 300

back to the original equation
w = 3m
w = 3(300)
w = 900

900 women + 300 men = 1200 people.

Can someone help me with number 2?

Answers

Answer:

Tme = x+y*. 5

Step-by-step explanation:

The focus of the comparison in question 1413 is not provided in the question itself. To determine the focus, you would need additional context or information about the content or subject being discussed. Both options (A and B) suggest a comparison between molecules involved in different cycles (nitrogen cycle or carbon cycle), but without more information, it's not possible to specify which one is the correct focus.

Evaluate b^2c^1 for b=-4 and c= 2.