Answer: x=-8 and y=9
Step-by-step explanation:
3x +4y=12 ( This can be equation 1)
-3x-2y=6 ( This can be equation 2)
Equation 1 + equation 2 = 2y=18
y= 18÷2
y=9
Substitute 9 for y in 3x+4=12
3x+4y=12
3x+4(9)=12
3x+36=12
3x= 12-36
3x=-24
x= -24÷3
x= -8
Therefore x=-8 and y=9
Mark me as the brainiest answer
Answer:
m∠1 = 112°
Consider x and 68° only. They are considered supplementary angles (angles that add up to 180°)
So,
m∠1 + 68 = 180
m∠1 = 180 - 68
m∠1 = 112°
m∠3 = 68°
Do the same thing as m∠1. Consider the two angles that would add up to 180, m∠1 and m∠3.
Since we know m∠1, we can easily solve m∠3.
So,
m∠3 + m∠1 = 180
m∠3 + 112 = 180
m∠3 = 180 - 112
m∠3 = 68
By now, you have noticed, why is the same as the other angle next to m∠1? This is because they are vertical angles. This is called vertical angle congruence theory.
m∠4 = 22
This is almost the same as solving for m∠3 and m∠1. The only difference is we conclude two angles that are <em>complement to each other (angles that add up to </em><em>90</em><em>°)</em>
So,
m∠3 + m∠4 = 90
68° + m∠4 = 90
m∠4 = 90 - 68
m∠4 = 22
m∠5 = 90° (correct)
C.
Find the value of "x"
Just like we solved for the questions above, we arrange them to add up to <em>180°.</em>
So,
(2x + 11) + (6x - 7) = <em>180</em>
2x + 11 + 6x - 7 = 180
2x + 6x + 11 - 7 = 180
8x + 4 = 180
8x = 180 - 4
8x = 176
x = 176 ÷ 8
x = 22°
Check:
2x + 11 + 6x - 7 = 180
2(22) + 11 + 6(22) - 7 = 180
44 + 11 + 132 - 7 = 180
55 + 125 = 180
180 = 180 (correct)
<em>Good luck sleeping </em>
Answer:
2x+4y
Step-by-step explanation:
1/4(8x+16y)
(
1
/4
)(8x+16y)
Distribute
(
1
/4
)(8x)+(
1
/4
)(16y)
=2x+4y
merry Christmas
Answer:
The answer is...
Step-by-step explanation:
Purplea