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attashe74 [19]
3 years ago
9

Please help i will mark brianliest.

Mathematics
1 answer:
Zina [86]3 years ago
4 0
3:1 it can also be written as 3/1 (three over one)
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PLEASE HELP ASAP! ! ! ! ! ! ! ! ! ! ! ! ! ! !
Natalka [10]

f(x)= -x^2+4 plotted vertex (0,4)

8 0
3 years ago
In a free-fall experiment, an object is dropped from a height of h = 400 feet. A camera on the ground 500 ft from the point of i
PilotLPTM [1.2K]
Hmmm the object, is at rest, when dropped, so it has a velocity of 0 ft/s

the only force acting on the object, is gravity, using feet will then be -32ft/s²,


was wondering myself on -32 or 32.. but anyhow... we'll settle for the negative value, since it seems to be just a bit of convention issues

so, we'll do the integral to get v(t) then

\bf \displaystyle \int -32\cdot dt\implies -32t+C
\\\\\\
\textit{object moves from \underline{rest}, so velocity is 0 at 0secs}
\\\\\\
-32(0)+C=0\implies C=0\implies \boxed{v(t)=-32t}
\\\\\\
\textit{now to get the positional s(t)}
\\\\\\
\displaystyle \int -32t\cdot dt\implies -16t^2+C
\\\\\\
\textit{the initial \underline{position} was 400ft away at 0secs}
\\\\\\
-16(0)^2+C=400\implies C=400\implies \boxed{s(t)=-16t^2+400}

when will it reach the ground level? let's set s(t) = 0

\bf s(t)=-16t^2+400\implies 0=-16t^2+400\implies \cfrac{-400}{-16}=t^2
\\\\\\
25=t^2\implies \boxed{5=t}


part B)  check the picture below

5 0
3 years ago
Which equation can be used to solve the problem?<br><br> 495 is 55 percent of what number?
fredd [130]

Answer:

55/100 * x = 495

Step-by-step explanation:

The unknown number is x.

55% of x = 495

55/100 * x = 495

3 0
3 years ago
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Paula walked on the treadmill for 12 minutes. The machine told her she had a total of 780 strides. What was her rate in strides
Cerrena [4.2K]

Answer:780/12=65

Step-by-step explanation:

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4 years ago
Bill wants to rent a car. Rental company a charges $35 per day plus $.10 per mile driven. Rental company B charges $25 per day p
svp [43]
According to my calculations, after 200 miles, the prices will be equal.
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3 years ago
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