3x - 2y = 1
2x + 2y = 4
Add the second equation to the first
5x = 5
Divide the first equation by 5
x = 1
Subtract the first equation from the second
x + 2y = 3
Subtract the first equation from the second again
2y = 2
Divide the second equation by 2
y = 1
Answer:
True
Step-by-step explanation:
Square root is a number that can be multiplied by itself , 8 × 8 is 64 , making it true.
Check the explanation
Y = 11.5 + 4.5*X1 -2.5*X2 +0.7*X3+1.6*X4 -2.4*X5 -2.8*X6
FOR JANE
X1 =1 , X2 =1 , X3 =5 , X4 =0 ,X5=0, X6=1
SO,
Y =11.5+(4.5*1)-(2.5*1)+(0.7*5)+0+0-(2.8*1)
= 14.2
..........................
FOR Sophie
X1 =1 , X2 =1 , X3 =10 , X4 =1 ,X5=0, X6=0
so,
Y =11.5+(4.5*1)-(2.5*1)+(0.7*10)+ (1.6*1)+0+0
= 22.1
