Answer:
X should be 17.
Step-by-step explanation:
Answer: The experiment is blinded because the volunteers in both groups are unaware of which dog food they received.
all we can really cancel is one of the (x-5) and the "x", is all.
15.4
-5×(-4.9) +7×(-1.3)
=24.5+(-9.1)
=24.5-9.1
==15.4
