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Orlov [11]
2 years ago
11

Find the difference between the products of 2.5 and 7.5 and the sum of 2.75 and 9.55​

Mathematics
1 answer:
faust18 [17]2 years ago
5 0

Answer:

Step-by-step explanation:

The product of 2.5 and 7.5 is (2.5)(7.5)=(5/2)(15/2)=75/4=18.75.

The sum of 2.75 and 9.55 is 2.75+9.55=(2+9)+(0.75+0.55)=11+1.3=12.3.

The difference between these is 18.75-12.3=(18-12)+(0.75-0.3)=6+0.45=6.45.

So, the answer is \boxed{6.45} and we're done!

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RUDIKE [14]
The perimeter, by definition, is the outside measure of that figure. MN and LM are the same length and LK and NK are the same length....we just need to find the lengths! Use the distance formula to find the distance between the 2 points:
\sqrt{( x_{2} - x_{1} ) ^{2} +( y_{2}- y_{1} ) ^{2}  }
For the segment MN, use the coordinates of M as your x1, y1, and use the coordinates of N for x2, y2:
\sqrt{(3-2) ^{2}+(4-3) ^{2}  }
which simplifies to
\sqrt{(1 )^{2}+(1) ^{2}  } which is \sqrt{2}
So that is the length of both MN and LM.  So far our perimeter is \sqrt{2} + \sqrt{2}=2 \sqrt{2}
Now let's use the same formula to find out the length of one of the longer segments:
\sqrt{(5-3) ^{2} +(3-2) ^{2} }
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\sqrt{(2) ^{2} +(1) ^{2} }
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7 0
2 years ago
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STatiana [176]

Step-by-step explanation:

Some expressions that are equivalent to this is: 1 - 1/5; 2 - 1  1/5; 3 - 2  1/5; etc.

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Step-by-step explanation:

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