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stiks02 [169]
3 years ago
6

A truck and a car go at the same time against each other from two cities, which are at a distance of 400 km from each other. If

the vehicles are moving at a constant speed of 68 km / h and 82 km / h, respectively, find after how long they have met?
Mathematics
1 answer:
ivann1987 [24]3 years ago
7 0

Answer: after about 96 Minutes

Step-by-step explanation:

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What is the distance between (−5,−4) and (-6,4)?
Helga [31]

The distance formula is:  d  =  sqrt( (x2 - x1)2 + (y2 - y1)2 )

 

For this problem, let (-5, -4) be the "first" point, so  x1 = -5  and  y2 = -4

                      and let (-6, 4) be the "second" point, so  x2 = -6  and  y2 = 4.

 

Then:  d  =  sqrt( (-6 - -5)2 + (4 - -4)2 )  =  sqrt( (-1)2 + (8)2 )  =  sqrt( 1 + 64 )  =  sqrt( 65)

 

The distance formula is just the Pythagorean Theorem applied to an x-y graph.

 

You would get the same final answer if you let (-5, -4) be the second point and (-6, 4) be the first point.

6 0
2 years ago
911 x 65 what is 911 x 65 not just the answer the work to
alexandr402 [8]

Answer:

Step-by-step explanation:

911

<u>x65</u>

5x1=5

5x10=50

5x900=4500

60x1=60

60x10=600

60x900=54000

5+50+4500+60+600+54000=59,215

6 0
3 years ago
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What is the opposite of the integer -4 plss thx :)
qwelly [4]

Answer:

+4

Step-by-step explanation:

any opposite of a natural number is created with a "minus"

- (-4) = +4

7 0
2 years ago
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Each edge of a cube is 9 centimeters long. Find the total length of all the edges of the cube.
posledela

Answer:

108 centimeters

Step-by-step explanation:

There are 12 edges total.

9 x 12 = 108

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2 years ago
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Oxana [17]

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Yes

Step-by-step explanation:

If you do 7x3 it equals 21.

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3 years ago
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