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Makovka662 [10]
3 years ago
12

Is ABC ~ DEF? If so, name which similarity postulate or theorem applies?

Mathematics
2 answers:
ch4aika [34]3 years ago
6 0
It’s either A A or sad
Margarita [4]3 years ago
3 0

These triangles are similar because 2 pairs of angles are equal. I'm not very familiar with the acronyms in the list but I guess it must be AA.

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Can someone help me<br> PQR is similar to XYZ
enot [183]

Answer:

<u>D.</u> <u>126</u>

Step-by-step explanation:

30 ÷ 5 = 6

5 * 6 = 30

6 * 6 = 36

10 * 6 = 60

60 + 30 + 36 = <u>126</u>

6 0
3 years ago
Read 2 more answers
What is the area of a triangle whose vertices are D(3, 3) , E(3, −1) , and F(−2, −5) ?
kirill [66]

We are given vertices of the triangle DEF as:

D(3, 3) , E(3, −1) , and F(−2, −5) .

Let us plot those points on the graph.

Formula of area of the triangle with vertices (x1,y1), (x2,y2) and (x3,y3).

Area = 1/2 [ (x2-x1)(y3-y1)-(x3-x1)(y2-y1)]

We have x1=3, x2=3, x3=-2, y1=3, y2 =-1 and y3 = -5.

Plugging values in formula, we get

Area = |1/2 [ 3-3)(-5-3)-(-2-3)(-1-3)]|

= |1/2 [ 0(-8) - (-5)(-4)]|

=| 1/2 [0 - 20]|

= |-10|

=10.

<h3>Therefore, area of the triangle with given vertices is 10 square units.</h3>
7 0
3 years ago
What is x if 3x − 1 divided 4 = −5?
Novosadov [1.4K]

Answer:

x=-19/3

Step-by-step explanation:

(3x-1)/4=-5

3x-1=-5*4

3x-1=-20

3x=-20+1

3x=-19

x=-19/3

5 0
3 years ago
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What is the constant of variation,k, of the direct variation,y=kx,through (5,8)
grigory [225]

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form \frac{y}{x}=k or y=kx

where

k is the constant of variation

in this problem we have

the point (5,8)

so

x=5\\y=8

substitute

\frac{y}{x}=k

\frac{8}{5}=k

therefore

<u>the answer is</u>

k=\frac{8}{5}

8 0
3 years ago
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Write an expression that is equivalent to thank you:)
Serga [27]

Answer:

18x + 8x^2 + 7 divided by 1 + 2x

4 0
2 years ago
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