2a+3b = -1 | *3
3a +5b = -2 |* -2
6a+ 9b = -3
-6a -10b = 4
------------------
/ -b =1
b= -1
2a + 3b= -1
2a + 3* -1 = -1
2a -3= -1
2a = 3-1
2a=2
a=2:2
a=1
Answer: sqrt 3 / 2
Step-by-step explanation: cos20°sin80°-cos80°sin20° is about 0.66 and sqrt(3)/2 is about 0.66.
Please mark as brainliest if my answer was correct and/or helpful.
Answer:
76% of 298 would be 226.48
Step-by-step explanation:HOPE THIS HELPED <3
Answer:
Step-by-step explanation:
10 x²+11x-6
=10 x²+15x-4x-6
=5x(2x+3)-2(2x+3)
=(2x+3)(5x-2)
The x values are the same for both green dots, so you are looking at a simplified version of the distance formula.
d = sqrt( (x2 - x1)^2 + (y2 - y1)^2 )
Since x1 = x2 = 5, the first set of brackets = (5 - 5) = 0
d = sqrt( y2 - y1)^2 )
d = y2 - y1
y2 = 5
y1 = - 1
d = 5 - - 1
d = 6 Answer