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erastova [34]
3 years ago
13

Plz plz plz plz plz plz helppppo

Mathematics
1 answer:
drek231 [11]3 years ago
5 0

Answer:

Expression is (8×-8)-8

Value is -72

Step-by-step explanation:

Product of 8 and -8 means

8×-8

8 less than that means to subtract 8 from the other part of the equation

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Write problem out please
Gekata [30.6K]

Answer:

21.25 m

Step-by-step explanation:

y = Ax² + Bx + C

Set the origin at the middle of the span so that the point (0, 0) is on the curve

0 = A(0)² + B(0) + C  means C = 0

The points (200, 85) and (-200, 85) are on the curve

85 = A(200)² + B(200)

85 = A(-200)² + B(-200)

85 - 40000A - B(200) = 85 - 40000A + B(200)

                      - B(200) = B(200)

                         -400B = 0

                                 B = 0

85 = A(200)²

A = 85/40000

y = 85x²/40000

y = 85(100)²/40000 = 21.25 m

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3 years ago
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notka56 [123]
Because the line makes equal angle at all the points..
3 0
3 years ago
Points A, B, and C are collinear. Point B is between A and C. BC=8x+709. AB=487+5x. AC=91. Find BC.
Zolol [24]

Answer:

<h3>            BC = 29</h3>

Step-by-step explanation:

Point B is between A and C and the points A, B, and C are collinear so:

AB + BC = AC

487 + 5x + 8x + 709 = 91

  13x + 1196 = 91

       - 1196      - 1196

   13x  =  - 1105

     ÷13     ÷13

    x = - 85

BC =  8x + 709 = 8(-85) + 709 = - 680 + 709 = 29

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