Answer:
8.64
Step-by-step explanation:
x=9
Add 6 to both sides of the equation. x = 3 + 6
Add 3and 6.
x=9
Answer:
mLNM=63
Step-by-step explanation:
triangle JKL is isocelese so mKJL and KLJ are the same
180-72=108
108/2=54
so both mKLJ and mMLN are equal
and since triangle LMN is an isoceles then mLNM and mLMN are equal to each other
so 180-54=126
126/2=63
mLNM=63
Since angles A and C are equivalent, then angles B and D must also be equivalent. So if
angle B = angle D then...
7x + 15 = 8x
Now we just solve for x
7x + 15 = 8x
15 = 8x - 7x
15 = x
We Can check to see if it is correct by substituting 15 in for x in the equation..
7x + 15 = 8x
7 (15)+15 = 8 (15)
105 +15 = 120
120 = 120
It checks! angles B and D = 120 degrees
<span>3x + x - 13 + 4 - 6x =12
Combine like terms....
- 2x - 9 =12
Add 9 to both sides....
-2x = 21
Divide both sides by -2 to get x by its self....
x = -21/2</span>
