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never [62]
2 years ago
7

What does it mean to add a negative number?

Mathematics
2 answers:
Andreas93 [3]2 years ago
5 0

Answer:

The exact same as subtracting.

Example

5 + (-2) = 3

MatroZZZ [7]2 years ago
5 0

Answer:

To add a negative number means to subtract

Step-by-step explanation:

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Find the height of the triangle by applying formulas for the area of a triangle and
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Answer:

Step-by-step explanation:

a= 12 mm ; b = 16 mm  ; c = 18 mm

s = (a + b+c)/2

=\dfrac{12 + 16 + 8}{2}\\\\= \dfrac{36}{2}\\\\= 18\\\\

s -a =  18 -  12 = 6 mm

s  -b = 18 - 16 = 2 mm

s  -c = 18 - 8 = 10 mm

area = \sqrt{s(s -a)(s-b)(s-c)}

       = \sqrt{18*6*2*10}\\\\= \sqrt{2160 }\\\\=46.47\\\\=46 \ mm^{2}\\

\dfrac{1}{2}* \ base * \ height = 46\\\\\dfrac{1}{2}*16* \ height = 46\\\\height = \dfrac{46*2}{16}\\\\

  = 5.75

Height = 5.8 mm

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2 years ago
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your answer is d

Step-by-step explanation:

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