Answer:
13
Step-by-step explanation:
Let the number be x.
ATQ x+22=455/x. x^2+22x=455. x=-35 or 13. Since x is positive, x=13
Answer:
1/5 lawn = 20 min.
? = 1 min
0.05 lawn in 1 minute
rate of 0.05 mowed per minute.
<h3>Answer:</h3>
$808.38
<h3>Explanation:</h3>
The formula for the payment amount (A) on principal P at interest rate r compounded monthly for a loan period of t years is ...
... A = P(r/12)/(1 -(1 +r/12)^(-12t))
For the main loan, the payment is ...
... A = 0.80·145000·(.0475/12)/(1 -(1 +.0475/12)^(-12·30)) = 605.11
For the piggyback loan, the payment is ...
... A = 0.20·145000·(.07525/12)/(1 -(1 +.07525/12)^(-12·30)) = 203.27
So, the total of monthly payments for the two loans is ...
... $605.11 +203.27 = $808.38
Answer:
Step-by-step explanation:
9x - 6y = 42
5x + 6y = 42
14x = 84
x = 6
30 + 6y = 42
6y = 12
y = 2
(6, 2)
The difference identity of two squares can be stated as:
a² - b² = (a + b)(a -b)
i.e. the product of sum of two numbers with the difference of two numbers. This can be easily proved.
For example, Let a = 4 and b = 3
so, a² - b² = 16 - 9 = 7
a + b = 4 + 3 = 7
a - b =4 - 3 = 1
(a + b )(a - b) = 7 x 1 = 7
Thus,
a² - b² = (a+b)(a-b)
So, option C gives the correct answer
