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SashulF [63]
3 years ago
12

The length of each side of an equilateral triangle is increased by 5 inches so the perimeter is now 60 inches. Write and solve a

n equation to find the original length of each side of the equilateral triangle.

Mathematics
2 answers:
Jlenok [28]3 years ago
6 0

A trainee has 3 sides and each side was increase by 5 inches.

Let x be the length of one side. You need to subtract 15 from the perimeter:

The equation can be 3x = 60 -15

Simplify:

3x = 45

Divide each side by 3:

X = 15

The original length of each side was 15 inches.

worty [1.4K]3 years ago
5 0
I hope this helps you

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Yuri [45]
The answer is 90 + 45 because BOC is a right angled triangle where angle BOC is 90 and angle BOK is 45 because 90 ÷2. A OK Is a right angled triangle so angle AOB is 90 as well so to find angle AOK we plus 90 and 45 which is 135 degrees.
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Help
kykrilka [37]

Let n =  the hours elapsed when the two trains are 660 miles apart.


Let the first train travel east and the second train travel west.

The distance traveled by the first train is

x = (50 mi/h)*(n h) = 50n mi


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y = (60 mi/h)*(n h) = 60n h


The distance between the two trains after n hours is

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110n = 660

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Answer: 6 hours


I hope this helps. Sorry it took so long

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3 years ago
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Answer:

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