The answer would be D 27.6 ft
Hope it helps
The objective of the experiment is to see if the multivitamin improves short term memory. The population could be the set of all adults in a certain country. The experimental group is the group that gets the multivitamin, while the control group gets a placebo (often just a sugar pill). The groups are usually split 50/50 but they are not always entirely perfectly equal groups. One sample procedure would be to put names into a computer and have the names randomly selected, to determine who goes into the experimental group or the control group.
ΔABC is a right triangle
By the Pythagorean theorem:
AC = √(BC² - AB²) =√(5²-3²) = √(25-9) = √16 = 4
ΔBED is a right triangle
DE = 4
BE = AB + AE = 3 + 4 = 7
By the Pythagorean theorem:
BD = √(BE² + DE²) =√(7²+4²) = √(49+16) = √65
Answer: BD = √65
I need to see the picture to answer
