Answer:
Step-by-step explanation:
"A" must be added to first expression to get the second one:
- A + 2x² - 3 xy + 5yz = x² - xy + y²
- A = ?
------------------------
- A = x² - xy + y² - (2x² - 3 xy + 5yz) =
- x² - xy + y² - 2x² + 3 xy - 5yz=
- -x² + y² + 2xy - 5yz
which one? I don’t see ay question
Step-by-step explanation:
the speed is 130 miles / hour.
that means the train travels 130 miles in 1 hour.
so, the question is, how far is it traveling. when it is going with that speed for 6 hours ?
well, 130 × 6 = 780 miles.
formally, speed is "distance / time".
multiplying this by some time, we have then an expression of "(distance / time) × time", which is then simply "distance".
9514 1404 393
Answer:
Step-by-step explanation:
To find the initial amount, put 0 where t is in the formula and do the arithmetic.
A(0) = 523(1/2)^0 = 523(1) = 523
The initial amount is 523 grams.
__
To find the amount remaining after 100 years, put 100 where t is in the formula and do the arithmetic.
A(100) = 523(1/2)^(100/30) ≈ 523(0.0992123) ≈ 52
About 52 grams will remain after 100 years.
Answer:
The mathematics of numbers (integers, rational numbers, real numbers, or complex numbers) under the operations of addition, subtraction, multiplication, and division.
Step-by-step explanation:
hope it helps :)