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Alex73 [517]
2 years ago
7

I really need help with this question plz

Mathematics
2 answers:
Sergeu [11.5K]2 years ago
8 0

Answer:

The actual base length is 4.1 meters

Step-by-step explanation:

The reason why is since the scale is for every 1 inch it represent 2 meters, we know that 2 inches would be 4 meters. Now since there is a half we have to take half of the two meters to see what half an inch would be represented by. Since half of two is one, it is 4.1 meters.

Alecsey [184]2 years ago
8 0

Answer:

Step-by-step explanation:

1 in = 2 m

2.5 in = 2.5* 2 = 5m

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The weight Wkg of a metal bar varies jointly
maria [59]

Answer:

d = \sqrt{\frac{216W}{35L} }

Step-by-step explanation:

Given that W varies jointly as L and d² then the equation relating them is

W = kLd² ← k is the constant of variation

To find k use the condition W = 140 when d = 4 and L = 54, thus

140 = k × 54 × 4² = 864k ( divide both sides by 864 )

\frac{140}{864} = k , that is

k = \frac{35}{216}

W = \frac{35}{216} Ld² ← equation of variation

Multiply both sides by 216

216W = 35Ld² ( divide both sides by 35L )

\frac{216W}{35L} = d² ( take the square root of both sides )

d = \sqrt{\frac{216W}{35L} }

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Answer:

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Step-by-step explanation:

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5y^2+20−20=80−20

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