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NemiM [27]
3 years ago
11

Describe how to solve problems for the area of a reduced or enlarged figure when the scale factor and dimensions of the original

figure are given.
i wll give a brainliest out if it is correct plz hurry im on a quiz help
Mathematics
2 answers:
Murrr4er [49]3 years ago
8 0

Answer:We are going to define the following variables:

A: Area of the original figure.

k: scale factor.

We have that the area of the new figure (reduced or enlarged, depends on the value of k) is:

A '= k ^ 2 * A

Example: rectangle of dimensions (2) * (3) A factor of k = 2 is extended. Find the new area.

The original area is:

A = (2) * (3) = 6

The new area will be:

A '= (2 * 2) * (2 * 3) = 4 * 6 = 24

Or equivalently:

A '= k ^ 2 * A

A '= (2) ^ 2 * (6) = 4 * 6 = 24

saw5 [17]3 years ago
5 0
I don’t understand the question
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The lines whose equations are 2x + 3y = 4 and y=mx + 6 will be perpendicular when m is
Sladkaya [172]
 2x+3y=4
-2x       
3y=-2x+4
/3
y=-2/3x+4/3
next you would find the negative reciprical -3/2 so the m=-3/2
5 0
3 years ago
Read 2 more answers
Find the centroid of the triangle with these vertices: P (-1,7), Q (9,5), and R (4,3).
Mumz [18]

Answer:

The coordinates of the centroid are:

O\:=\:\left(4,\:5\right)\:\:

The diagram is also attached below.

Step-by-step explanation:

Given the vertices

  • P (-1, 7)
  • Q (9, 5)
  • R (4, 3)

We know that the intersection of medians brings the centroid of the triangle.

The centroid of a triangle is given by

O\:=\:\left(\frac{P_x+Q_x+R_x}{3},\:\frac{P_y+Q_y+R_y}{3}\:\right)

In this example,

P_x=-1,\:P_y=7

Qx=9,\:Q_y=5

Rx=4,\:R_y=3

substituting in the formula

O\:=\:\left(\frac{-1+9+4}{3},\:\frac{7+5+3}{3}\:\right)\:\:

O\:=\:\left(\frac{12}{3},\:\frac{15}{3}\:\right)\:\:

O\:=\:\left(4,\:5\right)\:\:

Therefore, the coordinates of the centroid are:

O\:=\:\left(4,\:5\right)\:\:

The diagram is also attached below.

6 0
3 years ago
Help help pleaseeee
Vinvika [58]
For this, you just need to divide. 6/2=3, 90/2=45, and 100/2= 50. 50+45=95, 95+3=98

Hope this helps!
5 0
4 years ago
olivia works 4 hours more each week then her coworker lily. olivia works a total of 32 hours every 2 weeks. how many hours each
Veseljchak [2.6K]

Answer:

12 hours

Step-by-step explanation:

Let the number of hours Lily works each week be x.

This implies that of Olivia's is

x+4.

We were also told that for every two weeks, Olivia works a total of 32 hours.

This implies that

2(x+4)=32

We divide through by 2

\implies \frac{2(x + 4)}{2} =  \frac{32}{2}

\implies x+ 4 = 16

We subtract 4 from both sides

\implies x+ 4- 4= 16 - 4

\implies x=12

Hence Lily works 12 hours each week.

6 0
3 years ago
Show how to use distributive property to rewrite and find (32x6)+(32x4)
Anna35 [415]
320 is the answer to this question
5 0
3 years ago
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