Helena was curious if quadrilaterals QRST and XYZW were congruent, so she tried to map one figure onto the other using transformations: Helena concluded: "It's not possible to map QRST onto XYZW sing a sequence of rigid transformations, so the quadrilaterals are not congruent." What error did Helena make in her conclusion? WILL GIVE BRAINLIEST!!!

d

step-by-step explanation:

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3

for a it would be 24 children.

for b i don't understand the question. is it saying for each individual person they pick 5 reds to 7 greens or is it the whole group. clarify and i hope this can you.

step-by-step explanation: