6x-7y=8 x+5y=11 round to the nearest hundredth

-6x-7y=8

x+5y=11 so x = -5y + 11

Substitute x = -5y + 11 into -6x-7y=8

-6(-5y + 11) -7y = 8

30y - 66 - 7y = 8

23y = 74

y = 74/23

y = 3.22 (round to the nearest hundredth)

x = -5y + 11

x = -5(74/23) + 11

x = -16.09 + 11

x = -5.09

Answer

x = -5.09 and y = 3.22

-6x-7y=8

6x+30y=66

23y=74

y=3.22

x+5(3.22)=11

x+16.1=11

x=-5.1

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584

correct answer is option b.

step-by-step explanation:

the true statement about geometric figure is option b that is one line can be drawn through all three points.

if three points are on the same plane, they can be connected by a line.