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mr_godi [17]
3 years ago
5

Explain how to estimate the square root of 1659

Mathematics
1 answer:
Nata [24]3 years ago
7 0

Explanation:

Find the two closest square numbers to 1659.

40*40=1600

41*41=1681

Decide much closer to either 1600 or 1681 is 1659.

If it is exactly halfway between the two numbers, the square root is 40.5.

If it is closer to 1600, the sq rt decimal is between 1 and 4.

If it is closer to 1681, the sq rt decimal is between 6 and 9.

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Are two lines parallel, perpendicular or neither 3x+7y=15 and 7x-3y=6
maw [93]

Answer:

The lines are perpendicular

Step-by-step explanation:

we know that

If two lines are parallel, then their slopes are equal

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)

we have

3x+7y=15 ----> equation A

isolate the variable y

7y=-3x+15

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y=-\frac{3}{7}x+\frac{15}{7}

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isolate the variable y

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Divide by 3 both sides

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The slope of the line B is m_B=\frac{7}{3}

Compare the slope of both lines

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m_B=\frac{7}{3}

so

m_A \neq m_B ----> the lines are not parallel

Find the product of the slopes

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4 0
3 years ago
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3 years ago
An alloy contains nickel and chromium in 3:2 ratio, find the mass of each metal in 540g of alloy.​
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