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4 years ago

Evaluate 5x (-2x 2) for x = 3.

Mathematics

1 answer:

miv72 [106K]4 years ago

7 0

Plug in 3 for x. 5(3) (-2(3) x 2) = 15(-6 x 2) = 15(-12) = -180.

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What are the coordinates of the centroid of a triangle with vertices P(−4, −1) , Q(2, 2) , and R(2, −3) ?

Alenkasestr [34]

Answer:

$(x,y)=(0,\frac{-2}{3})$

Step-by-step explanation:

Given : Vertices of Triangle $P(x_1,y_1)=(-4,-1)$ , $Q(x_2,y_2)=(2, 2)$ and $R(x_3,y_3)=(2,-3)$

To find : Centroid of a triangle

The centroid of a triangle is the point of intersection of the three medians of the triangle.

The formula to calculate the centroid of a triangle is:

$(x,y)=(\frac{x_1+x_2+x_3}{3},\frac{y_1+y_2+y_3}{3})$

Where, $x_1,x_2,x_3,y_1,y_2,y_3$ are the coordinates of the centroid

Substituting the values in the formula gives us:

$(x,y)=(\frac{x_1+x_2+x_3}{3},\frac{y_1+y_2+y_3}{3})$

$(x,y)=(\frac{-4+2+2}{3},\frac{-1+2-3}{3})$

$(x,y)=(\frac{0}{3},\frac{-2}{3})$

Therefore, $(x,y)=(0,\frac{-2}{3})$

4 0

3 years ago

Read 2 more answers

Point P partitions the directed line segment from A to B into the ratio 3:4. Will P be closer to A or B? Why

Pani-rosa [81]

B because the distance between p to b is 1/4 of the line and the distance between p to a is 3/4 of the line

6 0

3 years ago

All kites are squares true or false

Klio2033 [76]

Answer:

Step-by-step explanation:

Not all kites are a square.

8 0

3 years ago

Find the distance between ( -2, 5) (-2, 14).

WITCHER [35]

Answer:

Step-by-step explanation:

x didn't change in value, y changed by 9

the distance between the two points is 9

6 0

2 years ago

A certain forest covers an area of 1700 km^2. Suppose that each year this area decreases by 3.25%. What will the area be after 6

Olenka [21]

y= 1700 (1- .0325) ^15

= 1700(.9675) ^15

=1700(.60920660)

= 1035.65 km

Hope this helps!

4 0

3 years ago