3 years ago

Which answer shows 0.05 written in scientific notation?

Mathematics

2 answers:

lozanna [386]3 years ago

6 0

5x-10+2 is the answer

kkurt [141]3 years ago

5 0

The answer it 5 x 10^-2!

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an airplane is at an altitude of 1,200 feet. It begins to ascend at a rate of 925 feet per minute. How many minutes will it take

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nikitadnepr [17]

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Concrete pour requires 9.83 cubic yards of cement. How many one cubic foot sacks must be order?

OverLord2011 [107]

Answer:

266

Step-by-step explanation:

There are (3 ft)^3 = 27 ft^3 in 1 cubic yard. Then 9.83 cubic yards will be ...

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steps:

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3 years ago

Write the equation of the parabola that has the vertex at point (2,-11) and passes through the point (0,5).

aleksandr82 [10.1K]

$~~~~~~\textit{vertical parabola vertex form} \\\\ y=a(x- h)^2+ k\qquad \begin{cases} \stackrel{vertex}{(h,k)}\\\\ \stackrel{"a"~is~negative}{op ens~\cap}\qquad \stackrel{"a"~is~positive}{op ens~\cup} \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}$

$\stackrel{vertex}{(\stackrel{h}{2}~~,~~\stackrel{k}{-11})}\qquad y=a(x-2)^2-11\qquad \qquad \textit{we also know that} \begin{cases} x=0\\ y=5 \end{cases} \\\\\\ 5=a(0-2)^2-11\implies 16=4a\implies \cfrac{16}{4}=a\implies 4=a \\\\[-0.35em] ~\dotfill\\\\ ~\hfill y=4(x-2)^2-11~\hfill$

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3 years ago