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anygoal [31]
2 years ago
8

Higher Order Thinking a carpenter plans to extend the length of rectangular desk by 7 feet. Let x represent the desk's original

length. The expression 96 + 7) represents the area of the desk surface where 9 is the width, in feet, and () represents the extended length, in feet, of the desk. The carpenter thinks that the area of the extended portion of the desk is 16 square feet Which choice below includes the expanded form of the area expression for the deck's surface and the correct area of the extended portion of the desk's surface?
a. 10x + 16 and 10k square feet
b. 9x+63 and 9x square feet
c. 9x + 7 and 7 square feet
d. 9x + 63 and 63 square feet
Mathematics
1 answer:
abruzzese [7]2 years ago
7 0

Answer:

d. 9x + 63 and 63 square feet

Step-by-step explanation:

Given

Original

Length = x

Width = 9

Extended

Length = x + 7

Width = 9

Area = 9(x + 7)

Required

Determine an expression and the value of the extended area

First, we calculate the area of the original desk

A_1 = x * 9

A_1 = 9x

From the given parameters, we have:

Area = 9(x + 7) --- area of the new surface

Open bracket

Area = 9x + 63

The area of the new surface is the summation of the area of the original desk and the area of the extended portion (E)

So:

Area = A_1 + E

Make E the subject

E= Area - A_1

E= 9x + 63 - 9x

E= 63

Hence, the area of the extended portion is 63

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the school stage is 8 3/4 feet wide and each chair is 1 5/12 feet wide. how many chairs will fit across the stage?
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Answer:

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bezimeni [28]

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Step-by-step explanation:

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The given statement:  A number is 30% of 20% of the number x.

The required algebraic expression would be:

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