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adell [148]
4 years ago
14

A rectangular prism has a volume of 2,288 cubic meters, a height of 12 meters, and a length of 10 meters. what is the measure of

the missing dimension?
Mathematics
1 answer:
KengaRu [80]4 years ago
4 0
Volume = length*width*height
2288 = 10*width*12
2288 = 120*width
Width = 2288/120
Width = 19.066 m (to three decimal places)
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Calculate the length of AB. Round to the nearest tenth.
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Answer:

AB = 10.06 cm

Step-by-step explanation:

Consider the given figure,

We have to find the length of side AB.

Lets rename the figure first, ABCD forms a rectangle. So , CB = DA = 12 cm

Also, EA = ED +DA ⇒ 15 = ED + 12 ⇒ ED = 15 - 12 ⇒ ED = 3 cm

Pythagoras theorem states that in a right triangle the sum of square of base and perpendicular is equal to square of hypotenuse.

Using, Pythagoras Theorem on Δ EDC,

(EC)^2=(ED)^2+(DC)^2

ED = 3 cm , EC = 10.5, Substitute, we get,

\Rightarrow (10.5)^2=(3)^2+(DC)^2

Solve for DC, we get,

\Rightarrow 110.25=9+(DC)^2

\Rightarrow 110.25-9=(DC)^2

\Rightarrow (DC)^2=101.25

\Rightarrow DC=\sqrt{101.25}

\Rightarrow DC=10.06

Since, ABCD is a rectangle. Thus, DC = AB

Hence, AB = 10.06 cm

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2.5 times.

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A company is expanding its building area from 12,500 square feet to 16,750 square feet. What is the percentage increase of the a
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Step-by-step explanation:

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As this question is only dealing with linear equations, we know that the gradient of the line is constant and hence the rate of change in x and y values is constant. Therefore, we can choose to substitute any of the given combinations of x and y values into the equation to obtain the correct equation. As it is easier to use smaller numbers for smaller calculations, we'll use the first combination of x = 1 and y = 4 .

<em>Equation</em><em> </em><em>No</em><em>.</em><em> </em><em>1</em><em> </em><em>:</em><em> </em><em>y</em><em> </em><em>=</em><em> </em><em>3x</em><em> </em><em>+</em><em> </em><em>1</em><em> </em><em>where</em><em> </em><em>x</em><em> </em><em>=</em><em> </em><em>1</em><em> </em><em>,</em><em> </em><em>y</em><em> </em><em>=</em><em> </em><em>4</em><em> </em><em>and</em><em> </em><em>x</em><em> </em><em>=</em><em> </em><em>2</em><em> </em><em>,</em><em> </em><em>y</em><em> </em><em>=</em><em> </em><em>5</em>

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However, as this equation has a constant not equal to 1 in front of the x variable and hence a different gradient to the other equations, we will substitute the second combination of x and y values.

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Therefore, equation is false / incorrect.

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( 4 ) = ( 1 ) + 3

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Therefore, equation is true / correct.

<em>Equation</em><em> </em><em>No</em><em>.</em><em> </em><em>4</em><em> </em><em>:</em><em> </em><em>y</em><em> </em><em>=</em><em> </em><em>x</em><em> </em><em>-</em><em> </em><em>3</em><em> </em><em>where</em><em> </em><em>x</em><em> </em><em>=</em><em> </em><em>1</em><em> </em><em>,</em><em> </em><em>y</em><em> </em><em>=</em><em> </em><em>4</em>

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AveGali [126]
-2/5x -2= 18
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