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Blizzard [7]
3 years ago
7

Find the distance between the points: (-5, 7) and (4, -2)

Mathematics
1 answer:
bonufazy [111]3 years ago
7 0

Answer:

d = 9√2

Step-by-step explanation:

d=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}\\\\d=\sqrt{\left(4-\left(-5\right)\right)^2+\left(-2-7\right)^2}\\\\d=\sqrt{\left(4+5\right)^2+\left(-2-7\right)^2}\\\\d=\sqrt{9^2+9^2}\\\\\mathrm{Add\:similar\:elements:}\:9^2+9^2=9^2\times\:2\\\\=\sqrt{9^2\times\:2}\\\\=\sqrt{2}\sqrt{9^2}\\\\=9\sqrt{2}

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0.4 divided by 0.08=
NISA [10]

Answer:

The answer is five (5)

Step-by-step explanation:


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You are buying a new television and see it at the same price in several shops with various discounts.
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Given: 1; -5; -13 ; -23 ; ...<br><br> Derive a formula for the nth term in the pattern.
mylen [45]

Answer:

  f(n) = -n^2 -3n +5

Step-by-step explanation:

Suppose the formula is ...

  f(n) = an^2 +bn +c

Then we have ...

  f(1) = 1 = a(1^2) +b(1) +c

  f(2) = -5 = a(2^2) +b(2) +c

  f(3) = -13 = a(3^2) +b(3) +c

__

Here's a way to solve these equations.

Subtract the first equation from the second:

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Subtract the second equation from the third:

  -8 = 5a +b . . . . . 5th equation

Subtract the fourth equation from the fifth:

  -2 = 2a

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Then substituting into the 4th equation to find b, we have ...

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and ...

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  5 = c

The formula is ...

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3 0
3 years ago
If the weight of 7 sheets of paper is 35 grams, find how many sheets of paper it will take to weigh 1.5 kg
Leokris [45]

Answer:

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Step-by-step explanation:

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then divide 1,500 by 5 to get 300.

3 0
3 years ago
What the answer fast
Dominik [7]

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3 0
3 years ago
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