3 years ago

Need help on this due today

Mathematics

1 answer:

andrey2020 [161]3 years ago

3 0

Answer:

Step-by-step explanation:

25+90+x+69=180

184+x=180

x=-4

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Could someone look at this geometry question, please? Thank you!

Maru [420]

Answer:

CE = 10.

Step-by-step explanation:

EC / 25 = 6/15

EC = 25*6/15

EC = 10

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3 years ago

Malan bought 7eights of turkey at the deli he used 2third of it to make sandwiches for lunch how much of the turkey did marlan u

Studentka2010 [4]

First we have to find a common denominator
8×3=21
7/8×3=21/24
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3 years ago

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elena55 [62]

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3 years ago

Read 2 more answers

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

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3 years ago

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Alchen [17]

Comment if you want me to give you the step by step thank you

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3 years ago