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bulgar [2K]
3 years ago
15

The formula for speed is s=d/t

Mathematics
1 answer:
Feliz [49]3 years ago
8 0

Here, d=20 km

t=1/2 h

s=?

Substitute all of 'em in the formula, s = 20/ 1/2 = 20*2/1 = 40

So, Car is travelling with speed of 40Km/h.

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50 is 1/10 of whatttt I NEED HELP
GREYUIT [131]

Answer:

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3 years ago
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If 3 times a square of an integer is added to 1 times the integer, the result is 2
jarptica [38.1K]
Let unknown integer be n.

So then your sentence would translate to 3n² + n = 2.

If you need to solve for n then we can move 2 to left side by subtract both sides by 2:

3n² + n - 2 = 0

Now you can factor:

3n² + 3n -2n - 2 = 0

3n( n + 1 ) - 2( n + 1 ) = 0

( 3n - 2 )( n + 1 ) = 0

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Final answer: n = 2/3   OR   n = -1
6 0
4 years ago
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PolarNik [594]

Answer:

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Use the formula 180\times(n-2) to find the sum of the angles in a polygon, given <em>n</em> sides. This formula tells us the angles of this pentagon must add to 540 (180\times(5-2)=540).

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Mars2501 [29]

can you explain your answer more


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