We are asked in the problem to determine the value of x in the equation <span>4x² + 2x = 7 using completing the square method. in this case,
</span><span>4x² + 2x = 7
x2 + 0.5 = 1.75
(x + 0.25)^2 - 0.0625 = 1.75
</span>(x + 0.25)^2 = 1.8125
<span>x+0.25=1.3462
</span>x1 =1.0963
x2 =-1.5962
Answer:
x= - 2
Step-by-step explanation:
Answer:
350
Step-by-step explanation:
So 25% is just basically 1/4. So multiply 1/4 by 1400 to get 350.
1/4 x 1400/1 = 1400/4 = 350
(just divided 1400 by 4 but I can't really show long division on a computer)
Answer:
<h2>y = -9x - 2</h2>
Step-by-step explanation:
The slope-intercept form of an equation of a line:
<em>y = mx + b</em>
<em>m</em> - slope
<em>b</em> - y-intercept (0, b)
We have the slope <em>m = -9</em> and the y-intercept (0, -2) → <em>b = -2</em>.
Substitute:
<em>y = -9x + (-2) = -9x - 2</em>
If 60% is $120, then by diving both the percent and the balance by 3, we se that 20% is $40.
Now multiply the 20% and $40 by 2, and you see 40% is $80.
