Answer:
623
Step-by-step explanation: 62.3x10=623
The first ferry, the cat, will travel at 0.53 miles a minute. The second ferry, the bird, will travel at 0.37 miles a minute. It will take a total of around 33 - 34 minutes for them to be 30 miles apart.
Answer:
(a + 2b)(a - b)
Step-by-step explanation:
Assuming you require the expression to be factored
Given
a² + ab - b² ← factor out from each term
= (a² + ab - 2b²) ← factor the quadratic
Consider the factors of the coefficient of the b² term(- 2) which sum to give the coefficient of the ab- term (+ 1)
The factors are + 2 and - 1, since
2 × - 1 = - 2 and 2 - 1 = + 1, thus
a² + ab - 2b² = (a + 2b)(a - b) and
a² + ab - b² = (a + 2b)(a - b)