Please: Use "^" to denote exponentiation: <span>2x^2 + 8x - 12 = 0
Reduce this by div. every term by 2: </span><span>x^2 + 4x - 6 = 0
Here a=1, b=4 and c = -6. Square half of b, obtaining (4/2)^2 = 4, and add, and then subtract, this 4 to x^2 + 4x - 6:
</span> x^2 + 4x +4 - 4 - 6 = 0. Rewrite the square as (x+2)^2, obtaining new equation
(x+2)^2 = 10. Take the sqrt of both sides: x+2 = plus or minus sqrt(10).
Finally, solve for x: x = -2 plus or minus sqrt(10).
Answer:
He earns a commission of $66.88.
Step-by-step explanation:
8% of the stereo sale price comes out to 0.08($836.00) = $66.88
He earns a commission of $66.88.
Answer:
an = 6 +5(n-1)
an = 1 +5n
Step-by-step explanation:
The equation for an arithmetic term is
an =a1 +d(n-1)
where a1 is the 1st term and d is the common difference
an = 6 +5(n-1)
We can distribute the 5
an = 6+5n-5
an = 1 +5n
Answer:
$7.20 + (5 x $18) = T
Step-by-step explanation:
Answer:
9 to 7 = 45 to 35..
Step-by-step explanation:
Given function:
<u><em>to find x:</em></u>
- divide 45 by 9
-
- if 9·5=45 then x would be 7·5..
- ·
Therefore, x=35.