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avanturin [10]
3 years ago
10

Divide a line of 1.8m into three parts in the ratio of 5:7:8​

Mathematics
1 answer:
kozerog [31]3 years ago
8 0

Answer:

0.45 m, 0.63 m, 0.72 m

Step-by-step explanation:

Let the three parts of the line be 5x, 7x and 8x

Therefore,

5x + 7x + 8x = 1.8

20x = 1.8

x = 1.8/20

x = 0.09

5x = 5*0.09 = 0.45 m

7x = 7*0.09 = 0.63 m

8x = 8*0.09 = 0.72 m

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Answer: y = 3x-8

------------------------------------------------
------------------------------------------------

Explanation:

The slope is 3, so m = 3

The given point is (3,1) meaning x = 3 and y = 1. The x coordinate is always listed first in an ordered pair. The general format is (x,y)

We'll use m = 3, x = 3 and y = 1 to find the y intercept

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So we're given m = 3 as the slope and we just found that b = -8 is the y intercept

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3 years ago
I need help on #3!!!
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Answer:

The solution can be defined as follows:

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