Solve, using elimination method
1. 2x+5y=19
2.3x-2y=19

(7, 1 )

Step-by-step explanation:

2x + 5y = 19 → (1)

3x - 2y = 19 → (2)

multiplying (1) by 2 and (2) by 5 then adding will eliminate y

4x + 10y = 38 → (3)

15x - 10y = 95 → (4)

add (3) and (4) term by term to eliminate y

19x + 0 = 133

19x = 133 ( divide both sides by 19 )

x = 7

substitute x = 7 into either of the 2 equations and solve for y

substituting into (1)

2(7) + 5y = 19

14 + 5y = 19 ( subtract 14 from both sides )

5y = 5 ( divide both sides by 5 )

y = 1

solution is (7, 1 )

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

see below

step-by-step explanation:

x+2> 6

subtract 2 from each side

x+2-2 > 6-2

x > 4

there is an open circle at 4 since is it is greater than and the line goes to the right