Answer:
a=21.1
Step-by-step explanation:
You can use the given (incorrect) equation and fill in the value of t to find h:
h = 12.5 +9sin(750(3.5)) = 3.68 . . . . feet
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Or, you can use the correct equation, or just your knowledge of revolutions:
h = 12.5 +9sin(750(2π·3.5)) = 12.5 . . . . feet
in 3.5 minutes at 750 revolutions per minute, the propeller makes 2625 full revolutions, so is back where it started — at 12.5 feet above the ground.
Answer:
12
Step-by-step explanation:
3x^2
because the information provided states that x = -2, that is what we are going to replace x with.
3(-2)^2
the next step is to evaluate the power because that is next in PEMDAS.
(-2)^2 = 4
that leaves us with:
3 * 4 = 12 ( the " * " represents the multiplication sign)
hope this helps!
Answer:
yours is really good. it is something i would write defiantly! good job, and btw, im doing this just bc, you dont have to give me anything in return! :D have a nice day!
Step-by-step explanation:
The original ratio is 5/2.
If Marcus adds 1 part of each to the mixture, the new ratio of red to white becomes
5+1 6 2
------ = ----- = ----
2+1 3 1
The new ratio of red to white is 2:1.