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polet [3.4K]
3 years ago
12

3х + 5(1 +7x) = 3х – 30

Mathematics
2 answers:
weqwewe [10]3 years ago
4 0
3x + (5+35x) = 3x -30
38x + 5 = 3x -30
38x = 3x -35
35x = -35
x = -1
satela [25.4K]3 years ago
4 0

Answer:-1

Step-by-step explanation:

3x+5(1+7x)=3x-30

Open bracket

3x+5+35x=3x-302

Collect like terms

3x+35x-3x=-30-5

35x=-35

Divide both sides by 35

35x÷35=-35÷35

X=-1

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A plot of land has been surveyed for a new housing development with borders AB, BC, DC, and DA. The plot of land is a right trap
sdas [7]

Answer:

m∠ABC = 119° and DC = 105 feet

Step-by-step explanation:

For better understanding of the solution see the attached figure of the trapezium ABCD :

m∠BCD = 61°

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In ΔBEC, By using Pythagoras theorem

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3 0
3 years ago
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step 4

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