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Masteriza [31]
3 years ago
12

Convert 490 square meters to square dekameters please show work, if you can't thats okay

Mathematics
2 answers:
lisov135 [29]3 years ago
7 0
1 square meter is 0.01 decameter in the table
So, 490 X 0.01 = 4.9 decameters

Hope I helped :)
Savatey [412]3 years ago
5 0
The answer will be 4.9. =) 

Since we know 1 metre is 0.01 dekametres, we can use this to answer the question!

We simply multiply 490 by 0.01. =)
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Tutorial Exercise A boat leaves a dock at 2:00 PM and travels due south at a speed of 20 km/h. Another boat has been heading due
ANTONII [103]

Answer:

Both the boats will closet together at 2:21:36 pm.

Step-by-step explanation:

Given that - At 2 pm boat 1 leaves dock and heads south and boat 2 heads east towards the dock. Assume the dock is at origin (0,0).

Speed of boat 1 is 20 km/h so the position of boat 1 at any time (0,-20t),

        Formula :   d=v*t

at 2 pm boat 2 was 15 km due west of the dock because it took the boat 1 hour to reach there at 15 km/h, so the position of boat 2 at that time was (-15,0)

the position of boat 2 is changing towards east, so the position of boat 2 at any time (-15+15t,0)

      Formula : D=\sqrt{(x2-x1)^2+(y2-y1)^2}

⇒                     D = \sqrt{20^2t^2+15(t-1)^2}

Now let           F(t) = D^2(t)

                ∵    F'(t) = 800t + 450(t-1) =  1250t -450\\F'(t) =0

⇒                     t= 450/1250

⇒                     t= .36 hours

⇒                       = 21 min 36 sec

Since F"(t)=0,

∴ This time gives us a minimum.

Thus, The two boats will closet together at 2:21:36 pm.

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What is the best math answer ever​
BigorU [14]

Lol you like maths? Honestly, I don't like it much b r u h

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

The midpoint between 8 and 18 is;

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This means that the distance between 13 and either 8 or 18 will be 5.

Now, the absolute value equation will have to say that the distance between x and 13 is 5.

Thus, plugging those numbers into the pattern of |x - m| = b. Where m is the midpoint and b is the distance from midpoint to either values of x.

This gives us the absolute value equation: |x - 13| = 5

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Answer:

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