Multiply. -0.5•(-0.4)
...
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
O A. -0.5•(-0.4)
B. The expression is undefined

(Someone please answer)

This is so hard and it’s for a test

Which must be true in order for the relationship △zyv ~ △xwv to be correct? zy ∥ wx ∠z ≅ ∠y and ∠w ≅ ∠x zv ≅ vy and wv ≅ vx ∠z ≅ ∠x and ∠w ≅ ∠y

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample