Right now, christina is twice as old as mark. in five year, she will be 50% older than him. what is her age now?

-4

step-by-step explanation:

do 6-10=

if u need it to be negative.

geometry: triangles

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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

f(x)=4

step-by-step explanation:

lol 2

step-by-step explanation: