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lana [24]
3 years ago
10

A girl takes 6 hours to ride 38.4 kilometers what is her speed

Mathematics
2 answers:
miss Akunina [59]3 years ago
8 0
I'm not sure but i think its 6.4km per hour
Ilia_Sergeevich [38]3 years ago
8 0
6.4 km an hour. I hope that Helps.
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Simplify : 3x(x+5)-12+4x​
WINSTONCH [101]
The answer is 3x^2 + 19x - 12.
3 0
3 years ago
Can someone help me please
pishuonlain [190]
64 FL oz

1 pint is 12 fl oz.

Since you're looking for 4 pints, you multiply everything by 4.


1 x 4 = 4
12 x 4 = 64
7 0
3 years ago
Solve by completing the square.
enot [183]

Answer:

x^2 -8x -5 = -3

x^2 -8x -2 = 0

We complete the square by:

1) Moving the "non X" term to the right:

x^2 -8x  = 2

2) Dividing the equation by the coefficient of X²

The coefficient of x is 1 so we don't do anything

3) Now here's the "completing the square" stage in which we:

      • take the coefficient of X

that is -8

     • divide it by 2

-8 ÷ 2 = -4

     • square that number

-4*-4 = 16

     • then add it to both sides of the  equation.

x^2 -8x +16 = 2 +16

That becomes

(x -4)^2 = 18

we take the square root of both sides:

(x -4) = sqr root (18)

x1 = sqr root (18) +4

AND

(x+4) = sqr root (18) -4

x1 =  sqr root (18) +4 = 4.2426406871  + 4 = 8.2426406871

x2 = sqr root (18) -4 =  = 4.2426406871  - 4 = .2426406871

       

Step-by-step explanation:

8 0
3 years ago
Look at the two equations:
Dvinal [7]

Answer:

- 3x + 6 = 21

- 3x = 21 - 6

- 3x = 18

- 3x \div  - 3 = 18 \div  - 3

x =  - 6

- 3x + 6 < 21

- 3x  < 21 + 6

- 3x < 27

- 3x \div  - 3 < 27 \div  - 3

x >  - 9

8 0
3 years ago
In t hours the train has traveled s miles. Find the formula for v, the speed of the train (in mph) in terms of t and s. Find the
Digiron [165]

Answer:

Part 1 .

As per the given statement: In t hours the train has traveled s miles.

Distance of the train = s mile

Time = t hours

Formula for :

Speed of the train(v) = \frac{\text{Distance of the train}}{\text{Time}}

or

v = \frac{s}{t} mph           .....[1]

Substitute the value of t = 3 hours and s = 180 miles in [1], to solve for v;

v = \frac{180}{3} = 60 mph

Therefore, the speed of the train(v) is, 60 mph

Part 2.

Similarly,

The formula for speed of the train (v) is given by;

v =\frac{s}{t}

Substitute the value of t = 2.5 hours and s = 225 miles to solve for v;

v = \frac{225}{2.5} = 90 mph

Therefore, the speed of the train(v) is, 90 mph


7 0
3 years ago
Read 2 more answers
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