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Julli [10]
3 years ago
5

Which expressions are equivalent to 28?

Mathematics
1 answer:
alexgriva [62]3 years ago
3 0

\huge\text{Hey there!}

\huge\text{Finding out what is \bf equivalent to 28}

\large\textsf{980 - 35}\\\large\textsf{= 945}\\\large\textsf{945 }\neq\large\textsf{ 28}

\large\textsf{480 - 16}\\\large\textsf{= 464}\\\large\textsf{480 }\neq\large\textsf{ 28}

\large\textsf{1,400 + 50}\\\large\textsf{= 1,450}\\\large\textsf{1,450}\neq\large\textsf{ 28}

\large\textsf{625 - 250}\\\large\textsf{= 375}\\\large\textsf{375 }\neq\large\textsf{ 28}

\large\textsf{1,680 + 60}\\\large\textsf{= 1,740}\\\large\textsf{1,740 }\neq\large\textsf{ 28}

\huge\text{Thus, your answer is: \boxed{\textsf{none of the above}}}\huge\checkmark

\huge\text{Good luck on your assignment \& enjoy your day!}

~\frak{Amphitrite1040:)}

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Explanation:

With displacement, all we care about is the beginning and end. We don't care about the middle part(s) of the journey. So we'll take the straight line route from beginning to end when it comes to computing displacement.

We start at A(0,0) and end at B(-2,0). Going from A directly to B has us go 2 km west. Keep in mind that displacement is a vector, so you must include the direction along with the distance.

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3 years ago
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Answer:

a.)   depth of the lake = (volume of the lake) / area of lake

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         = 624,305,840,400 \times  0.9167  

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c.) the percentage change in the lake volume over that year

      = 572,282,434,719.5 cubic feet / 173,693,585,360,000 cubic feet

      =  0.0033

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Step-by-step explanation:

i) acres to square feet :    1 acre = 43560 square feet

  therefore 14,332,090 acres  = 624,305,840,400 square feet

ii) 1 mile  = 5280 feet

   1 cubic mile  = 5280 \times 5280 \times 5280 = 147,197,952,000 cubic feet

therefore 1180 cubic miles  = 173,693,585,360,000 cubic feet

a.)   depth of the lake = (volume of the lake) / area of lake

            = 173,693,585,360,000 / 624,305,840,400  = 278.22 feet

b.) 11 inches  = 0.9167 feet

    Water gained in cubic feet gained by the lake

    = 624,305,840,400 \times  0.9167   = 572,282,434,719.5 cubic feet

c.) the percentage change in the lake volume over that year

  = 572,282,434,719.5 cubic feet / 173,693,585,360,000 cubic feet

   =  0.0033

  = 0.33%

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