Here’s what I found that can help you step by step
B is the correct answer R=Q-7s/4
Answer:
9/10
Step-by-step explanation:
Very simple, Keep It, Change It, Flip it
Do 3/4 X 6/5 and you should get your answer
Can you provide a picture ?? or some sort of context
Why not look up "standard deviation" yourself, to be sure? But yes, the std. dev. is the sqrt of the variance.
