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garri49 [273]
3 years ago
10

How do I solve 1/2(x+4-21x-5)=46

Mathematics
2 answers:
AnnZ [28]3 years ago
8 0

Answer:

x=-91/1840

Step-by-step explanation:

Firstly deal with the bracket

2(x+4-21x-5)

2(x-21x+4-5)

2(-20x-1)

-40x-2

Back to the question

1/-40x-2=46

Cross multiply

46(-40x-2)=1

-1840x-92=1

Add 92 to both sides

-1840x=91

Divide both sides by-1840

x=-91/1840

Julli [10]3 years ago
7 0

Answer:

x=-4.65

Step-by-step explanation:

1/2(x+4-21x-5)=46

1/2(-20x-1)=46

1/2(-20x)+1/2(-1)=46

1/2(-20x)-.5=46

1/2(-20x)+.5=46

.5(-20x)=46.5/.5

-20x=93

x=-4.65

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Answer:

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Step-by-step explanation:

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A building in the shape of a rectangular prism needs to be painted. Some facts about the building are shown below.
algol [13]

Answer:

(2)(120)(80) + (2)(120)(50) - (4)(60)(5²)

Step-by-step explanation:

The lateral faces of the building are the 4 sides of the building consisting:

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Area of the two rectangular faces = (2)(120)(80)

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Area of the two rectangular faces = (2)(120)(50)

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