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3 years ago

The sinclair family live 5.4 miles from southside middle school. how many feet away do they live?

Mathematics

2 answers:

enot [183]3 years ago

7 0

They live 28512 feet away

Vesna [10]3 years ago

4 0

The solution is 28512. The work is in the pic.

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Which matrix is equal to

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Answer:

65.91828182

Step-by-step explanation:

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3 years ago

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invent three meaningful algebatric expressions of your own from the list of variables and enter them into the table below.write

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Step-by-step explanation:

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2 years ago

High grade steel consists of 85% iron and 15% magnese. Low grade steel consists of 67% iron and 33% mag ese. NASA orders 500 ton

Mamont248 [21]

Answer:

$361\dfrac{1}{9}$ tons of high steel and $138\dfrac{8}{9}$ tons of low steel

Step-by-step explanation:

Let x be the number of tons of high grade steel and y be the number of tons ow low grade steel needed.

In x tons of high grade steel there are

$0.85x$ tons of iron

$0.15x$ tons of magnese

In y tons of low grade steel there are

$0.67y$ tons of iron

$0.33y$ tons of magnese

NASA orders 500 tons of steel, so

$x+y=500$

and specifies that it must be in the proportion 80% iron and 20% magnese, so

$0.85x+0.67y=500\cdot 0.8\\ \\0.85x+0.67y=400$

From the first equation,

$x=500-y$

Substitute it into the second equation:

$0.85(500-y)+0.67y=400\\ \\425-0.85y+0.67y=400\\ \\-0.18y=-25\\ \\y=\dfrac{2,500}{18}=138\dfrac{8}{9}\ tons\\ \\x=361\dfrac{1}{9}\ tons$

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3 years ago

Simplify and show work <br><br> 5x - (6 - x)

Scilla [17]

Answer:

6x-6

Step-by-step explanation:

5x-(6-x)

First you distribute the negative to (6-x) which makes -6+x, then you just subtract that from 5x which makes 5x-6+x then you just simplify into 6x-6.

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3 years ago

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Lera25 [3.4K]

Answer:

To find the unit rate, divide the numerator and denominator of the given rate by the denominator of the given rate.

Step-by-step explanation:

As an example, in this case, divide the numerator and denominator of 70/5 by 5, to get 14/1, or 14 students per class, which is the unit rate.

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