A similarity transformation maps ΔABC to ΔDEF. The m∠A = 85°. The scale factor of the dilation is 1/2. If ∠A in the preimage corresponds to ∠D in the image, what is m∠D? Select one: a. m∠D = 170° b. m∠D = 85° c. m∠D = 42.5°

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

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

the answer is 11.2 (i know i’m late)

93-8=85

855=17

17*4=68

there are 68 purple marbles in that bag