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3 years ago

If point C is the centroid of triangle RST and SD = 21, find SC. show your work.

Mathematics

2 answers:

blagie [28]3 years ago

4 0

Answer:

SC = 14 units

Explanation:

Centroid of a triangle refers to the point where it's 3 median intersect. It's the centre point of the triangle.

the point of intersection divides all three median into two parts. the parts are in ratio 2 : 1. The part of the median starting from the vertex to the midpoint is 2/3rd of the median.

SD = 21

SC = 2/3 of 21

= 2/3 × 21

= 14

Dahasolnce [82]3 years ago

3 0

Answer:

SC = 14

Step-by-step explanation:

Point C is the centroid.

Property of centroid: the medians are divided in 2:1 ratio from the vertices.

SD = 21
SC = 2/3*21 = 14

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AVprozaik [17]

Answer:

$x + y = 79$ and

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Step-by-step explanation:

Let the variables be: x and y

The equations can be modelled as:

$x + y = 79$ and

$x - y = 25$

To solve for x and y, we have:

Make x the subject in $x - y = 25$

$x = 25 + y$

Substitute $x = 25 + y$ in $x + y = 79$

$25 + y + y = 79$

$25 + 2y = 79$

Collect like terms

$2y = 79 - 25$

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$x = 25 + 27$

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So, we have:

$(x,y) = (52,27)$

8 0

3 years ago

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Sergio039 [100]

Answer:

You can determine the root of the equation by multiple methods. However, that answer is correct. The root is -2.

Step-by-step explanation:

A root is where the graph crosses the x-axis. One trick I use to see if it is a root is by taking the numerator and plugging in the number for x. For example, $\frac{x+2}{x^{2} -2}$ , and take the -2 and plug it in for x. The numerator would cancel out because -2 + 2 = 0. That is the way you can determine if it is a root or not.

I hope this helps, if you need any clarification let me know :)

3 0

3 years ago

Read 2 more answers

3t hreater or less than 3,000 lb

pochemuha

3 tons would be greater than 3,000 pounds

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4 years ago

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vesna_86 [32]

Answer:

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3 years ago

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frutty [35]

Answer:

pretty sure its a

Step-by-step explanation:

I do not have a explanation sorry bro

6 0

3 years ago

If point C is the centroid of triangle RST and SD = 21, find SC. show your work.​​

If point C is the centroid of triangle RST and SD = 21, find SC. show your work.