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seraphim [82]
4 years ago
15

The points (3,-2) and (7,r) lie on a line with the slope 3/4. Find the missing coordinate r.​

Mathematics
1 answer:
snow_lady [41]4 years ago
8 0

Answer:

the answer is 1

Step-by-step explanation:

X1=3 X2=7

Y1=-2 Y=r

M=y2-Y1/X2-X1

3/4=r-(-2)/7-3

3/4=r+2/4

Cross multiply

4(r+2)=4*3

4r+8=12

collect like terms

4r=12-8

4r=4

divide the by the co efficient of x

r=1

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Answer:

Length = 27.2

Width = 6.8

Step-by-step explanation:

P = L+L+W+W

68 = 4(L+L)+W+W

68 = 4(x+x)+x+x

68 = 4x+4x+x+x

68 = 10x

x = 6.8

L = 4x

L = 27.2

W = x

W = 6.8

68 = 27.2+27.2+6.8+6.8

68 = 68

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Answer:

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Please help with this question
natita [175]

Answer:

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Step-by-step explanation:

The appropriate trig identity is ...

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Answer:

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Step-by-step explanation:

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