Answer:
$3.40
Step-by-step explanation:
4x.40 is 1.60
2x.90 is 1.80
Then you take 1.80+1.60 to get $3.40 Hope this helps!
Step-by-step explanation:
factor 4 out of the variable terms, as this helps.
but my approach is simply to define the target and then calculate "backwards".
we want to find
(ax + b)² = a²x² + 2abx + b²
and now we compare with the original equation :
a²x² = 4x²
a² = 4
a = 2
2abx = 16x
2×2×bx = 16x
4b = 16
b = 4
b² = 16, but we have only 3, so we need to subtract 16-3 = 13 from the completed square.
so, our equation is
(2x + 4)² - 13 = 0
(2x + 4)² = 13
2x + 4 = sqrt(13)
2x = sqrt(13) - 4
x = sqrt(13)/2 - 2
Answer:
72
Step-by-step explanation:
18 + 18 + 6 + 6 + 12 + 12
Well currently, we don't have sufficient evidence to prove that. we don't even know anything about j and l
Answer:
<u><em>x = 16</em></u>
Step-by-step explanation:
<em>(x + 1)² = (x - 3)² + 120</em>
<em>x² + 2x + 1 = x² - 6x + 9 + 120</em>
<em>8x = 128</em>
<em>x = 16</em>
