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emmainna [20.7K]
3 years ago
13

Check all of the expressions that are equal to the one below. (-8). (4 + 6) O A. (6 + 4) • (8) B. (-8) • 4 + (-8) - 6 O C. (4+6)

• (-8) O D. (-8) • 4-(8) • 6​
Mathematics
1 answer:
olasank [31]3 years ago
6 0

Answer:

1 is, 2 is, 3 isn't, 4 isn't

Step-by-step explanation:

Some answers may not add up the same way!

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The coordinate of centroid of a triangle whose vertices are (1,3,-2), (4,5,0), (6,3,9) is = ……………….
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Answer:

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Step-by-step explanation:

Given

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Required

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C is calculated as follows:

C = (\frac{1}{3}(x_1+x_2+x_3),\frac{1}{3}(y_1+y_2+y_3),\frac{1}{3}(z_1+z_2+z_3}))

Substitute values of x and y in the given equation

C = (\frac{1}{3}(1+4+6),\frac{1}{3}(3+5+3),\frac{1}{3}(-2+0+9}))

C = (\frac{1}{3}(11),\frac{1}{3}(11),\frac{1}{3}(7}))

C = (\frac{11}{3},\frac{11}{3},\frac{7}{3})

<em>The above is the coordinate of the centroid</em>

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could you also give me a brainliest if I am correct.

thanks!

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3 years ago
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