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AfilCa [17]
2 years ago
5

The length of a rectangle is 8 inches more than three times the width. the perimeter is 88 inches. find the length and width.

Mathematics
1 answer:
Sav [38]2 years ago
5 0
We can say L as length and W as the width 

L= 3w + 8 

The formula for perimeter is 2L + 2W = P. We can substitute L in as "3w+8" to make the equation... 

2(3w+8)+2w=88        Now, we can simplify by distributing the 2 to each term
6w+16+2w=88
8w+16=88               Then subtract 16 from each side..
8w=72
w=9

So the width is 9, so we can substitue that into the previous equation, L = 3w+8. 

L=3(9)+8
L=27+8
L=35, W=9



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8 0
3 years ago
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A gym has 2kg and 5kg weights. There are 10 disks in all. The total weight of 2kg and 5kg disks is equal to 29kg. Find the numbe
Simora [160]

Answer:

no of 5 kg disks is 3, and no of 2 kg disks is (10-3) i.e. 7

Step-by-step explanation:

Let the no of 2kg disks be a.

Let no of 5 kg disks be b.

2a+5b=29

a+b=10

Using substitution, we have

2(10-b) + 5b=29

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6 0
3 years ago
The rectangular floor of a storage shed has an area of 580 square feet. The length of the floor is 9 feet more than its width (s
Marysya12 [62]

9514 1404 393

Answer:

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  • width: 20 ft

Step-by-step explanation:

Assuming the dimensions are integer numbers of feet, you're looking for factors of 580 that have a difference of 9.

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The last pair of factors differs by 9, so ...

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8 0
2 years ago
Please help immediately! thanks
Eva8 [605]

Answer:

pretty sure its 9 : 4

Step-by-step explanation:

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