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miskamm [114]
3 years ago
11

Choose what the expressions below best represent within the context of the word problem. The length of a rectangle is 12 inches

more than its width. What is the width of the rectangle if the perimeter is 42 inches? x best represents . x + 12 best represents .
Mathematics
2 answers:
lidiya [134]3 years ago
3 0
X best represents
the width must be x so that the length can be 12+x meaning that the length is greater than length by 12
EleoNora [17]3 years ago
3 0

x represents that the width must be x so that the length can be 12+x meaning that the length is greater than length by 12.. thanks

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poizon [28]
(1) <span>The surface area of the square pyramid = 4 * (area of one face) + area of the base
area of one face = 0.5 * 34.2 * 28.4
area of the base = 34.2 * 34.2
∴ </span>The surface area of the pyramid = 4 * (<span>0.5 * 34.2 * 28.4) + </span><span>34.2 * 34.2

By comparing the last answer with the answer of </span>Vikram, we find that:
He used the wrong expression to represent the area of the base of the pyramid.
=========================================================

(2) The surface area of the rectangular pyramid
= area of two face with the height 36.5 + area of two face with the height 37.8 + area of the base

area of two face with the height 36.5 = 2 * 0.5 * 36.5 * 25.6
area of two face with the height 37.8 = 2 * 0.5 * 37.8 * 16.2
are of the base = 25.6 * 16.2

Total area = (2 * 0.5 * 36.5 * 25.6) + (2 * 0.5 * 37.8 * 16.2) + (25.6 * 16.2)
                = (36.5 * 25.6) + (37.8 * 16.2) + (25.6 * 16.2)
note: 2 *0.5 = 1

By comparing the last answer with the answer of Tracy , we find that:
<span>Tracy’s answer will be correct because she made use of the fact that 2 (1/2) = 1 in her expression.
=========================================================
</span>
(3)
the total surface area of this rectangular pyramid =
= area of two face with the height 52 + area of two face with the height 60 + area of the base

area of two face with the height 52 = 2 * 0.5 * 52 * 78 = 4,056  m²
area of two face with the height 60 = 2 * 0.5 * 60 * 50 = 3,000  m²
are of the base = 78 * 50 = 3900  m²

Total area = 4,056 + 3,000 + 3,900 = 10,956 m²



















3 0
3 years ago
Read 2 more answers
Can I have help? I'll mark you!
svlad2 [7]

1, 2 and 6 are right.

Solution go on infinitely

all solution are negative because its number less than -20

solution contain rational among others

3 0
3 years ago
Read 2 more answers
I need help on this problem please help!!
Elden [556K]

<h2>\frac{8}{5}</h2>

Explanation:

<em>Every time the top numbers go up by one </em><em>.</em><em>.</em><em>.</em>

<em>Th</em><em>e bottom numbers go up by two.</em>

5 0
3 years ago
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