Answer:
x = ±
- 2
Step-by-step explanation:
x² + 4x = 4
to complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(2)x + 4 = 4 + 4
(x + 2)² = 8 ( take square root of both sides )
x + 2 = ±
( subtract 2 from both sides )
x = ±
- 2
Answer:
I don't know what kind of questions is this but first you need to show your spinner
Denominator, 12 and 9 are on the bottom. and 15 and x are on the right side.
The formula we'll use for this is the simple interest formula, or:
Where:
<span><span>P is the principal amount, $4000.00.
</span><span>r is the interest rate, 12% per year, or in decimal form, 12/100=0.12.
</span><span>t is the time involved, 3....year(s) time periods.
</span><span>So, t is 3....year time periods.
</span></span>
To find the simple interest, we multiply 4000 × 0.12 × 3 to get that:
<span>
The interest is: $1440.00</span>