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Alenkasestr [34]
4 years ago
9

Find the length of a diagonal of a rectangle ABCD with vertices A (-3, 1) B (-1, 3) C(3, -1) and D (1,-3)

Mathematics
2 answers:
Basile [38]4 years ago
8 0

The answer would be 6.3    


Novay_Z [31]4 years ago
4 0
The length of the diagonal may be determined by using the points A and C or B and D. Choosing A and C, the length of the diagonal is,
                             d = sqrt ((x₂ - x₁)² + (y₂ - y₁)²)
Substituting the known variables,
                             d = sqrt (3 - -3)² + (-1 - 1)²)
                                   d = sqrt 40
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tamaranim1 [39]

Answer:

$284.60

Step-by-step explanation:

7.3% of $265.24 = 19.36252,

So the tax is $19.36.

19.36 + 265.24 = 284.60

So the total grocery bill is $284.60.

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A teacher has 2 packages of red, 6 packages of blue, and half a package of yellow squares. He wants to build a rectangle so that
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4 years ago
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Help pleaseeeeee I need help ASAP
yarga [219]

Answer:

2nd option is true

Step-by-step explanation:

7 0
4 years ago
Plz help me i’ll give like 50 points!
Alenkasestr [34]

Answer:

We will be using the Pythagorean theorem for the first 2 and SOH CAH TOA for the other 3.

a^2 + b^2 = c^2

sin(t) = b/c;  cos(t) = a/c;  tan(t) = b/a

#4)  a^2 + 9^2 = (3sqrt(10))^2                    #5  9^2 + 27^2 = c^2

       a^2 + 81 = 90                                             81 + 729 = c^2

       a^2 = 9                                                       810 = c^2

       a = 3                                                          9sqrt(10) = c

#6    27 + 3 = 30                                        #9  cos(90) = 8/c

                                                                         8/-0.45 = c

                                                                         | 17 | = c  [not the exact value]

#7  8^2 + b^2 = 17^2                                 #8  2^2 + 15^2 = c^2

      64 + b^2 = 289                                          4 + 225 = c^2

      b^2 = 225                                                  229 = c^2

      b = 15  [not the exact value]                     15.3 = c  [not the exact value]

Sorry if something doesn't make sense and felt kind of rushed. Feel free to comment down below my answer if you have any questions and I'll try to clarify it the best I can.

8 0
3 years ago
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