Not that good at math, help please.

Mathematics

2 answers:

Arlecino [84]2 years ago

6 0

Answer:

center point: (-4, 2)

radius: 8 units

Step-by-step explanation:

abc

scZoUnD [109]2 years ago

3 0

Answer:

center point: (-4, 2)

radius: 8 units

Step-by-step explanation:

To find the radius of a figure in a coordinate plane, you have to do x-y where x is the starting point and y is the ending point. so in this case:

-4-(-12)

= -4+12

= 8

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S is the centroid of triangle NQL. What is the length of NR?

svetoff [14.1K]

ANSWER

The length of NR is
$36 \: \: units$

EXPLANATION

The centroids divides the medians in the ratio
$2:1$
For instance

$|NS|:|SR|=2:1$

But

$|NS| = 9n - 12$

$|SR|=3n$

We substitute all these values in to the above relation to obtain,

$(9n - 12):3n=2:1$

This can be rewritten as

$\frac{9n - 12}{3n} = \frac{2}{1}$

We cross multiply to obtain,

$1(9n - 12) = 2 \times 3n$

This implies that,

$9n - 12 = 6n$

We group like terms to obtain,

$9n - 6n = 12$

This simplifies to give us,

$3n = 12$

$n = 4$

We can now determine each length as follows,

$|NS| = 9(4 ) - 12$

$|NS| = 36- 12$

$|NS| = 24$

$|SR|=3 \times 4$

$|SR|=12$

From the diagram,

$|NR|=|NS|+|SR|$

$|NR|=24 + 12$

$|NR|=36 \: units$