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Lera25 [3.4K]
3 years ago
15

Can u guys answer this and fast (3.6*10^2)*(2.8*10^2)

Mathematics
1 answer:
VashaNatasha [74]3 years ago
7 0
<span>so basically we only use the associative property of multiplication and one of the laws of exponents

associative=a(bc)=(ab)c
also law of exponent=a^x times a^y=a^(x+y)

(3.6 times 10^2) times (2.8 times 10^2)
associative
3.6 times 10^3 times 2.8 times 10^2
3.6 times 2.8 times 10^2 times 10^2
law of exponents
10^2 times 10^2=10^(2+2)=10^4
3.6 times 2.8=10.08
the answer is 10.08 times 10^4 or (10.08*10^4) or (1.001*10^5)

the second one

</span>
<span>(3.6 times 10^6) times (2.2 times 10^-4)
associative
3.6 times 10^6 times 2.2 times 10^-4
3.6 times 2.2 times 10^6 times 10^-4
law of exponents
10^6 times 10^-4=10^(6-4)=10^2
3.6 times 2.2=7.92
the answer is 7.92 times 10^2 or (7.92*10^2)
</span>

A is (1.001*10^5)
<span> B is (7.92*10^2)</span>

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Can somebody please help me?
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In order to be a triangle, the sum of two sides must be greater than the third side.  (Just think about it for a bit and you will see why this has to be true).  For example, could you have a triangle with side 3 inches, 4inches, and then a whopping 100 inches?  No, because the other two sides are too short to fully connect a triangle!

So once you understand this, we can find the possible length <span>of </span>the missing side.

Let x be the length of the missing side in centimeters.  The other two sides are 18cm and 40cm.

So one possible combination:

The sum of our two known lengths must be larger than the unknown length:

18 + 40 > x
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Therefore one constraint is that our third side has to be less than 58 centimeters.

Another combination:

18 + x > 40
x > 22

So another constraint is that our third side must be larger than 22 cm.

The last combination is pointless:

40 + x > 18

Since 40 is already larger than 18, then "40 + x" is obviously larger than 18.

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22 < x < 58

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3 years ago
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