so.. .whatever those amounts are, of "x" and "y", for the mixture,
they must add up to 100 grams, or x + y = 100
and the titanium percentage of that sum, must yield a 13 grams of titanium on those 100 grams
thus
do the substitution, and solve for "x",
what's "y" amount? well, y = 100 - x
Answer:
$1516.69 per month less
Step-by-step explanation:
The formula for the monthly payment A on a loan of principal P, annual rate r, for t years is ...
A = P(r/12)/(1 -(1 +r/12)^(-12t))
For the 18.5% loan, the monthly payment is ...
A = 150000(.185/12)/(1 -(1 +.185/12)^(-12·30)) ≈ 2321.92
For the 5% loan, the monthly payment is ...
A = 150000(.05/12)/(1 -(1 +.05/12)^-360) ≈ 805.23
The mortgage at 5% would be $1516.69 less per month.
let hourly rate = r
then over 30 rate would be 1.4r
30r + 5(1.4r) = 436.60
30r + 7r = 436.60
37r = 436.60
r = 436.60/37 = 11.80
his hourly rate is $11.80
Hi fren,
x=<span><span>−y</span>+<span>1
and for the second one...
</span></span>y=<span><span>2x</span>+<span>2
</span></span>x-intercept >> <span>(<span><span>−1</span>,0</span>)
</span>y-intercept >> <span>(<span>0,2)</span></span><span>
</span>
