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3 years ago

Find the missing value so that the two points have a constant of proportionality of ½. (14,7) and (6,y) *

Mathematics

1 answer:

melomori [17]3 years ago

6 0

Answer:

y=3

Step-by-step explanation:

$\frac{7-y}{14-6}$ = $\frac{1}{2}$

$\frac{7-y}{8}$ = $\frac{1}{2}$

7-y = 4

y=3

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earnstyle [38]

Answer:

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Step-by-step explanation:

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7x + 12

So we sum to 180 and write:

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Also, straight angle is 180 degrees, thus Angle 1 and (14x + 9) angle is sum to 180, thus we can write:

$14x+9+\angle 1=180\\14x + \angle 1=171$

Or we can write this as:

$14x + \angle 1=171\\\angle 1 = 171 - 14x$

We substitute this expression for Angle 1 into 1st equation we got and solve for x first,

$7x+\angle 1 = 108\\7x+( 171 - 14x)=108\\-7x=-63\\x=9$

Since x = 9, the angle "14x + 9" would be:

14(9) + 9 = 135

Hence Angle 1 would be:

$\angle 1 + 14x + 9 = 180\\\angle 1 + 135 = 180\\\angle 1 = 45$

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Step-by-step explanation:

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Step-by-step explanation:

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