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trasher [3.6K]
3 years ago
6

Plot the points (2,5) and (-1,-2) then find the distance.

Mathematics
1 answer:
Gnoma [55]3 years ago
3 0

Answer:

(7, 3)

Step-by-step explanation:

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The square of X varies inversely as the square root of Y and directly as the variable M. When M = 27 and Y = 16, then X = 9. Fin
irakobra [83]

Answer:

Y = 441

Step-by-step explanation:

Given

M = 27 when Y = 16 and X = 9

Required

Find Y when M = 7 and X = 2

We start by getting the algebraic representation of the given statement

X^2 \alpha \frac{1}{\sqrt Y} \alpha M

Convert the variation to an equation; we have

X^2 = \frac{KM}{\sqrt Y}

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When M = 27; Y = 16; X = 9, the expression becomes

9^2 = \frac{K * 27}{\sqrt{16}}

This gives

81 = \frac{k * 27}{4}

Make K the subject of formula

K = \frac{81* 4}{27}

K = \frac{324}{27}

K = 12

Solving for Y when M = 7 and X = 2

Recall that X^2 = \frac{KM}{\sqrt Y}

Substitute values for K, M and X

2^2 = \frac{12 * 7}{\sqrt{Y}}

4 = \frac{84}{\sqrt{Y}}

Take square of both sides

4^2 = (\frac{84}{\sqrt{Y}})^2

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Make  Y the subject of formula

Y = \frac{7056}{16}

Y = 441

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Answer:

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To the nearest tenth, x = 8.3 cm.

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