Answer:
1st number: 22
2nd number: 16
3rd number: 64
Step-by-step explanation:
x + y + z = 102
x = 6 + y
z = 4y
plug that in!
(6 + y) + y + (4y) = 102
get rid of the parenthesis (I added them so you could see what I was replacing) and add like terms.
6 + 6y = 102
move 6 to the other side.
6y = 96
y = 16
now that you know one number, you can solve the equations for the rest!
x = 6 + (16)
z = 4(16)
__________________________________________________________
x = 22
y = 16
z = 64
<span>-x^2 + x-1=0 divide by (-) </span><span><span>
</span>
</span><span>x^2-x+1=0 </span><span><span>
</span>
</span><span>x=1/2(+-) root of (1/2)^2-1 </span><span><span>
</span>
</span><span>x=1/2(+-) root of (1/4)-1 </span><span><span>
</span> </span><span><span>
</span></span><span>x=1/2(+-) root of (1/4)-1 </span>
<span>
x=1/2(+-) root of (1/4)-((4*1)/4) </span>
<span>
x=1/2(+-) root of (-3/4)
</span>
<span>which has not answers, because we can not take a root of negatives numbers</span>
Answer:
C
Step-by-step explanation:
