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xeze [42]
3 years ago
11

Diego plans to build an extension to his rectangular model bridge. Let x represent the increase, in centimeters, of the model's

length. The expression 2 1 (x + 8) represents the area of the model bridge, where 2 1 is the width, in centimeters, and (x + 8) represents the extended length, in centimeters, of the model. Which expression is equivalent to 2 1 (x + 8)?
Mathematics
2 answers:
marishachu [46]3 years ago
8 0

Answer:

(21x+168)cm²

Step-by-step explanation:

If the expression 2 1 (x + 8) represents the area of the model bridge, where 2 1 is the width, in centimeters, and (x + 8) represents the extended length, the expression that is equivalent to 21(x+8) can be gotten by expanding the function. The expansion of the function will give the area of the rectangular model bridge as shown;

21(x+8) = 21x+ 168

The expression equivalent to 21(x+8) is therefore (21x+68)cm²

Note that the the unit of the value and function given is in cm therefore the unit of their equivalent expression will be in cm²

aleksklad [387]3 years ago
7 0

Answer:

21x + 168 cm

Step-by-step explanation:

According to the question, 21 ( x + 8) represents the area of the extended model bridge.

Since the model bridge is rectangular, the length is x + 8 cm while the width is 21 cm. Hence, the area of the rectangular model bridge will be 21 × (x + 8) using Length (L) × Breadth (B) formula.

21 × (x +8)

= 21 (x +8)

Opening the bracket, we will have:

21x + 168 cm.

21x + 168 is equivalent of 21 (x + 168) just that the former expression is an expanded form.

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Answer:

The degree of this monomial is 2.

Step-by-step explanation:

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The exponent is two, so the degree is two.

Hope this helped!!!

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Step-by-step explanation:him

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Suppose the graph of a cubic polynomial function has the same zeroes and passes through the coordinate (0, -5). Write the equati
amid [387]
In this we know all three zeros and one point from which the graph pass.
So we will let specific cubic polynomial function of the form
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As we know zeros are that point where we will get value of function equal to zero. So it is basically in form (x_n , 0)

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So required equation is
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4 0
3 years ago
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Of the songs in Brianna's music library, 1/3 are rock songs. Of the rock songs, 7/10 feature a guitar solo. What fraction of the
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Answer:

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Step-by-step explanation:

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7/30 cannot be simplified, so that is the answer.

6 0
2 years ago
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