What is the substitution
3x-5y=11;x=3y+1
2 answers:
3x-5y=11 ------- 1
x=3y+1――――2
from 2 make x subject of the formula
x=3y+1――――3
so put （3y+1）for x in 1
3（3y+1）-5y=11
9y+3-5y=11
4y+3=11
4y=11-3
4y=8
divide both side by 4
y=2――――4
put 2 for y in 3
x=3y+1
x=3（2）+1
x =7
Substitute 3x+1 for x. Then solve from there
You might be interested in
3x +12 = 18
-12 -12
---------------
3x 6
-- = --
3 3
x = 2
Answer:
C
hope this helps :-)
No.
a. take 35% off 30 =19.5
b. first take 25% off 30 = 22.5, then take 10% off 22.5 = 20.25
Answer:
(-9,8)
(-2,8)
(-1,8)
(0,8)
(7,8)
hope this helped you :)
Please mark me brainiest
Answer:
3 and 5
Step-by-step explanation:
Alternate interior angles are the angles in between the two lines and on the inside
4 and 6
3 and 5
