Choice D will create an irrational number when added. This is because a rational number plus a rational number will always be irrational (you can experiment this by trying to add rational numbers to pi). For example, 3 + pi = 6.1415926..... or

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:)
Answer:
19
Step-by-step explanation:
ok is this just a joke?
nine plus ten
9 + 10 = 19
Answer:
the car would have to be going under 5mph
Step-by-step explanation:
Answer:
look at the picture
Step-by-step explanation:
for the triangles with lines on the sides, heres what it means:
The dashes on the lines show they are equal in length.