Exercise 2
write down equations to solve the following word problems.
1. half of a number, plus a fifth of two less than the number, is four less t1
the number. what is the number?
det four what was th

Write down equations to solve the following word problems.

Half of a number, plus a fifth of two less than the number ,is four less than the number .What is the number

The number is 12

Given that,

Half of a number, plus a fifth of two less than the number ,is four less than the number

Let us write the above statement mathematically,

half of number + fifth of two less than the number = four less than number

Let "n" be the number

Therefore,

half of "n" + fifth of two less than "n" = number - 4

Simplify the above expression and solve for "n"

Thus the number is 12

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl