What we know is that the sum of a triangle's internal angles are 180º, and a straight angle makes 180º.
first, we have to find the third internal angle(let's call it n) so that we can use it to find the exterior angle.
(3x + 20) + (4x + 5) + n = 180
simplify:
7x + 25 + n = 180
7x + n = 155
n = 155 - 7x
Now we can add it to the external angle to find x.
(155 - 7x) + (8x + 15) = 180
simplify:
170 + 8x - 7x = 180
170 + x = 180
x = 10
Now we can substitute it to the external angle.
8 x 10 + 15 = 95
the exterior angle is 95º.
Answer:
$319.43
Step-by-step explanation:
Monday= 4 * $11.52= $46.08
Tuesday= 4.5 * $11.52= $51.84
Thursday= 7.25 * $11.52= $83.27
Saturday= 12 * $11.52= $138.24
When you add all of those together you get $319.43
hope this helped (:
(this took so long so this better be right...<3)
Answer:
um
Step-by-step explanation:
Answer : 6 red beads
explanation: 2+1+3 = 6
12-6 = 6
hope this helps :)
Answer:
no
Step-by-step explanation:
the square root of 2 is not rational
