Step-by-step explanation:
the perimeter of a rectangle is
2×length + 2×width =
2×(x + 10y) + 2×(7x² - x + 9y) =
2x + 20y + 14x² - 2x + 18y =
14x² + 38y
Answer:
the answer is 300 if you divide y'know
Step-by-step explanation:
First, simplify this system:
<span>2x = -10y + 6 and x + 5y = 3
by dividing the first equation by 2. Result: </span><span>x = -5y + 3
Subbing this into the 2nd equation, -5y + 3 + 5y = 3
This equation is always true, so this system has infinitely many sol'ns.</span>
Answer:
8 loaves
Step-by-step explanation:
so each loaf contains 7/8 cups flour
there are 7 loaves
7 ÷ 7/8 = 8
Answer:
Check Explanation
Step-by-step explanation:
In finance, the rule of 70 estimates how long incomes take to double.
(Number of years it takes for income to
double) = 70/(annual percentage growth rate)
a) At 2.8%
N = (70/2.8) = 25.0 years
It will take 25.0 years for incomes to double.
b) At 4.6%
N = (70/4.6) = 15.2 years
It will take 15.2 years for incomes to double.
c) At 6.3%
N = (70/6.3) = 11.1 years
It will take 11.1 years for incomes to double.
d) At 7.8%
N = (70/7.8) = 9.0 years
It will take 9.0 years for incomes to double.
e) At 8.9%
N = (70/8.9) = 7.9 years
It will take 7.9 years for incomes to double.