Hello :
the consecutive room numbers are : n , n+1
n(n+1) =420
n²+n -420 = 0
the discriminant delta = b² - 4ac ( a = 1 and b = 1 and c = - 420
delta = (1)²-4(1)(-420) =1681= 41²
n = (-1 -41)/2 ( refused negatif number)
or
n = (-1+41)/2 =20
<span> the room numbers.are : 20 , 21</span>
Answer:
it would be 5%
Step-by-step explanation:
10%÷2=0.05%
<span>Factor <span>x2y3 +<span> xy</span></span></span><span>I can factor an "x" and a "y<span>" out of each term: </span><span>x2y<span>3 </span>= </span><span>xy(x</span>1y2<span>) = xy(xy</span>2) a<span>nd </span><span>xy= xy(1).</span><span><span> x2y3 +<span> xy</span> = xy( )</span><span><span> = xy(xy2 )</span><span> = </span><span>xy(xy2 + 1)</span></span></span></span>
Remember: When "nothing" is left after factoring, a "1" is left behind in the parentheses.
<span><span>Factor </span><span>3x3 + 6x2 – 15x</span>.</span><span>I can factor a "3" and an "x<span>" out of each term: </span>3x3<span> = 3x(x</span>2<span>), 6x</span>2<span> = 3x(2x)</span><span>, and
</span><span>–15x = 3x(–5</span>). Being careful of my signs, I get:<span><span>3x3 + 6x2 – 15x = 3x( )</span><span><span>= 3x(x2 )</span><span>= 3x(x2 + 2x )</span><span>= </span><span>3x(x2 + 2x – 5)</span><span>
</span></span></span></span>
For this case we must use the following equation:
I = prt
Where,
p: principal
r: derivation of rate
t: time
Substituting values we have:
I = 4500 * (0.065) * 6
I = $ 1755
Answer:
she will owe
I = $ 1755
