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jarptica [38.1K]
3 years ago
5

The sides of a triangle are in the ratio 3 : 4 : 5. What is the length of each side if the perimeter of the triangle is 90 cm

Mathematics
1 answer:
svet-max [94.6K]3 years ago
7 0
The sides of the triangle are 3x, 4x and 5x

3x + 4x + 5x = 90
12x = 90
x = 90/12
x = 7.5

first side = 3x = 3 * 7.5 = 22.5 cm
second side = 4x = 4 * 7.5 = 30 cm
third side = 5x = 5*7.5 = 37.5 cm
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liraira [26]

Answer:

Step-by-step explanation:It must be an equal ratio- 2:3:7 = n:n:112

Now, to find the other numbers (n) in the ratio, we have to find the relationship between the two proportions.

To get from 7 to 112, we must multiply by 16. This is the relationship.

So, we must multiply both, the walnut and raisin cookies by 16 also.

2 x 16 = 32 = Raisin

3 x 16 = 48 = Walnut

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Now that we have all the data, we can make the ratio.

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Hope this helps! :)

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3 years ago
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4 0
2 years ago
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olga nikolaevna [1]
The answer is C. 89 in^2

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4 0
3 years ago
What is the step by step and on this expression 4b+9+b
AleksAgata [21]

Answer:

5b + 9

Step-by-step explanation:

You are essentially trying to simplify the expression given to you. To do so, combine terms with like terms:

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In this case, combine all terms with the same amount of variables, b.

(4b + b) + 9 = 5b + 9

5b + 9 is your answer.

~

3 0
3 years ago
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sasho [114]
Yesterday = 30 -15
yesterday = 15 minutes

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percentage = 200%
5 0
3 years ago
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