Three sevenths of the students in a school are in sixth grade, how many students are in the school if sixty three of them are sixth graders?

Solution:

Let "x" be the total students in school

Given that,

Three sevenths of the students in a school are in sixth grade

Therefore,

sixty three of them are sixth graders

Therefore,

sixth grade students = 63

Therefore,

Thus there are 147 students in school

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

source:

1     sepan

2     encuentren

3     tenga

4     hable

5   parezca

6   llegue