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3 years ago

Use the distance formula to find distance between two points. Need help on this ASAP.

Mathematics

1 answer:

astra-53 [7]3 years ago

3 0

Answer:

a) 20 units

b) 2 √10 units

c) 2 √17 units

Step-by-step explanation:

The distance formula is;

D = √(y2-y1)^2 + (x2-x1)^2

a) D = √(-7-9)^2 + (-7-5)^2

D = √256 + 144

D = √400

D = 20

b) D = √(10-8)^2 + (9-2)^2

D = √(2)^2 + 6^2

D = √4 + 36)

D = √40

D = 2 √10 units

c) D = √(1 + 7)^2 + (-8+10)^2

D = √(64 + 4)

D = √68

D = 2 √17 units

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3 years ago

Solve the proportion do not include the variable a -5/12 equals a + 2 / 5

e-lub [12.9K]

<h3>Let us solve the proportion by using cross multiplication .</h3>

$\frac{a - 5}{12} = \frac{a + 2}{5}$

$a - 5 \times 5 = 12 \times a + 2$

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<h3> $a = - 7$ </h3><h3>Using this let us find out the value of the proportional fractions .</h3>

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$\frac{ - 12}{12}$

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$\frac{ - 5}{5}$

$∴ the \: proportionalfractions \: are \: :$

$\frac{ - 12}{12} : : \frac{ - 5}{5}$

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3 years ago