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pav-90 [236]
3 years ago
15

Look at the following numbers: −5, −6, 0, 6 Which pair of numbers has a sum of zero? −6, 0 −5, 6 6, −6 −5, 0

Mathematics
2 answers:
galben [10]3 years ago
6 0

Answer:

6, -6

Step-by-step explanation:

If you have 6, and add -6, you get 0. :)

Blababa [14]3 years ago
3 0

Answer:

6 & -6

Step-by-step explanation:

Note that "sum" means that the pair of numbers must be added. Add the pair of numbers. It must equal 0:

6 + (-6) = 6 - 6 = 0

6 & -6 is your answer.

~

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Where is the center of the largest circle that you could draw inside a given triangle? . A.the point of concurrency of the media
juin [17]

The <em><u>correct answer</u></em> is:

C.the point of concurrency of the angle bisectors of the triangle

Explanation:

The largest circle that can be drawn inside a triangle is called an inscribed circle.  The center of this circle is called the incenter.

The incenter is formed by the intersection of the angle bisectors of all 3 angles in the triangle.

5 0
3 years ago
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klio [65]
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8 0
3 years ago
A basketball gymnasium is 25 meters high, 80 meters wide and 200 meters long. We want to connect two strings, one from each of t
Rudiy27

Answer:

a) the centre is at (12.5 m, 40 m , 100 m ) with respect to our position

b) the length of the strings S will be 216.85 m

c) the angle that is formed by the strings is  1.23 rad

Step-by-step explanation:

assuming that we stand on one of the corners on the floor , so our coordinates are (0,0,0)  , then the coordinates of the center of the gymnasium   are found through

x center = (25 + 0)/2 = 12.5 m

y center = (80+ 0)/2 = 40 m

z center = (200+ 0)/2 = 100 m

then the centre is at (12.5 m, 40 m , 100 m ) with respect to our position

b) the length of the strings S will be the modulus of the vector that points from our position to the diagonally opposite corners

|S| = √(25²+80²+200²) = 216.85 m

c) the angle can be found through the dot product of the vectors that represent the strings S₁ and S₂

S₁ =(25,80,10)

S₂ =(-25,80,100)

then

S₁*S₂ = 25*(-25) +80*80 + 100*100 = 15775

but also

S₁*S₂ = |S₁||S₂| cos θ = |S|² * cos θ

S₁*S₂ =  |S|² * cos θ

cos θ= S₁*S₂/|S|²

θ= cos ⁻¹ ( S₁*S₂/|S|² ) = cos ⁻¹ [15775/(25²+80²+200²)] = 1.23 rad

7 0
3 years ago
How much longer is a 1 inch button than 3/8 inch button
KengaRu [80]

3/8+x=1

x=5/8

A 1 inch button is 5/8 inches longer than a 3/8 inch button.

3 0
3 years ago
A town has a population of 13000 and grows at 2.5% every year. What will be the
amid [387]

Answer:

14708

Step-by-step explanation:

The growth factor is 100% + 2.5% = 102.5% = 1.025

Population after 5 years

= 13000 × (1.025)^{5}

≈ 14708 ( to the nearest whole number )

8 0
3 years ago
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