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3 years ago

H S 45° 299 N 106 E 29° А A A

Mathematics

1 answer:

tankabanditka [31]3 years ago

3 0

Answer:

Can you pls write it straight

Step-by-step explanation:

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a train travelling at 60 km per hour completes the journey in 8 hour. How much faster would it have to travel to cover the same

antiseptic1488 [7]

Answer:

Total distance covered: 60x8 = 480

Speed needed to cover distance of 480 km in 6 hrs = 480/6 = 80 km/hr.

initial velocity : 60 km/hr.

Train needs to run faster with speed of 20km per hour to achieve same distance in 6 hrs.

Step-by-step explanation:

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2 years ago

Jamie spent

atroni [7]

That’s how you do it ☺︎︎

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3 years ago

Line g passes through points (5, 9) and (3, 2). Line h passes through points (9, 10) and (2, 12). Are line g and line h parallel

icang [17]

For this case we find the slopes of each of the lines:

The g line passes through the following points:

$(x_ {1}, y_ {1}) :( 3,2)\\(x_ {2}, y_ {2}) :( 5,9)$

So, the slope is:

$m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {9-2} {5-3} = \frac {7} {2}$

Line h passes through the following points:

$(x_ {1}, y_ {1}) :( 9,10)\\(x_ {2}, y_ {2}) :( 2,12)$

So, the slope is:

$m = \frac {y_ {2} -y_ {1}}{x_ {2} -x_ {1}} = \frac {12-10} {2-9} = \frac {2} {- 7} = - \frac {2} {7}$

By definition, if two lines are parallel then their slopes are equal. If the lines are perpendicular then the product of their slopes is -1.

It is observed that lines g and h are not parallel. We verify if they are perpendicular:

$\frac {7} {2} * - \frac {2} {7} = \frac {-14} {14} = - 1$

Thus, the lines are perpendicular.

Answer:

The lines are perpendicular.

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3 years ago

A triangle has one Angle that measures 31° one angle that measures 45° and one angle that measures 140° what kind a triangle is

qaws [65]

unequal Triangle

If two sides of a triangle are unequal, The angle opposite to the greater side is greater than the angle opposite to less.That is,

In a triangle ΔABC,

if AC > AB then ∠B > ∠C

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3 years ago

Which are are the roots of the quadratic function F(q)=q^2-125?

nadezda [96]

Q^2 - 125 = 0
q^2 = 125

q = +/- sqrt 125 = 11.18, -11.18

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3 years ago