Answer:
x=435 ,y=145
Step-by-step explanation:
You substitute x for 3y in this equation and get
3y+y=580
from here you simplify
4y=580
and divide 580 by 4 to get what y is
y=580/4
y=145
now since x=3y you mutiply y by 3
x=3(y)
x=3(145)
x=435
Answer:
Step-by-step explanation:
15y+12x = 18 is equivalent to 5y+4x = 6
2x+3y = 12 is equivalent to -6y = 4x-24
one solution: (x,y) = (-21,18)
Answer:
t² + t - 3 = 0
Step-by-step explanation:
C = t - 5
B = t² - 2
2C + 2B
= 2(t - 5) + 2(t² + 2)
= 2t - 10 + 2t² + 4
= 2t² + 2t - 6
=> t² + t - 3 = 0
A.) mode b.) 36 c.) yes d.) skewed left
