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kogti [31]
3 years ago
14

6y+5x=8 x3y=-7 use substituion

Mathematics
1 answer:
UNO [17]3 years ago
3 0
Substitution: 

6y + 5x = 8
x + 3y = -7

x = -3y + 7 

6y + 5(-3y + 7) = 8 
6y - 15y + 35 = 8 
-9y + 35 = 8 
-9y = -27 
-y = -3
y = 3

x = -7 + 9
x = 2

y = 3
x = 2
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Answer:

\sqrt{73} units.

Therefore, Option C is correct.

Step-by-step explanation:

We have given a pentagon ABCDE

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That means we have to find the distance of AD

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Using distance formula:

\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Here,x_1=1,y_1=6,x_2=4,y_2=-2

On substituting the values we will get:

\sqrt{(4-1)^2+(-2-6)^2}

On simplification:

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\sqrt{9+64}

\sqrt{73}.

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Therefore, Option C is correct.

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3 years ago
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1. Which angles are adjacent angles?
irga5000 [103]

Answer:

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Step-by-step explanation:

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Answer

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Step-by-step explanation:

A nonagon is a 9 sided polygon with angles of 140. It wants the sum of all the angles. Since it has 9 sides, it has 9 angles. Now you can add 140, 9 times, or do 140 x 9. This gets you 1,260.

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3. The measure of angle 3 is 101. find the measure of angle 4.

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Step-by-step explanation.

Okay so both angles are against the same intersecting line, this means their sum must be 180. All we have to do here is subtract 180 and 101. this gets us 79.

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Now that i've showed you how to do the first 4 you can apply the rest of the information on your own for 5 and the rest of the test.

4 0
3 years ago
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Answer:

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