Which expression forms an equation with the given expression?
8 • 7 – 4 =
(points : 1)
(2 + 9) • 2
10 • 3 – 6
9 • 5 + 7
9(12 ÷ 2)

8 • 7 – 4 = 9 • 5 -  7.

Step-by-step explanation:

Given  : 8 • 7 – 4 =

To find : Which expression forms an equation with the given expression.

Solution : We have given  8 • 7 – 4 =

First we solve the product

56 - 4.

52

Now we will check the 9 • 5 + 7

Solve the product  45 + 7 =  52.

So, the   8 • 7 – 4 = 9 • 5 -  7

Therefore,  8 • 7 – 4 = 9 • 5 -  7.

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

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