F(8x+5)^-1=0.2
(8+5)^-1=0.077
5^-1=0.2
8x^-1=0.125
0.125-0.2=-0.075/0.2-0.125=0.075
Answer:
Step-by-step explanation:
3
Answer:
The answer is: 83 + 12√35
(a + b)² = a² + 2ab + b²
In (2√5 + 3√7)², a = 2√5, b = 3√7
Just substitute a and b:
(a + b)² = a² + 2ab + b² = (2√5)² + 2 * 2√5 * 3√7 + (3√7)² =
= 2²√5² + 2 * 2 * 3 * √5 * √7 + 3²√7² =
= 4 * 5 + 12 * √(5*7) + 9 * 7 =
= 20 + 12 *√35 + 63 =
= 83 + 12√35
Step-by-step explanation:
Answer:
A) -2/3
Explanation:
Answer:
Please look at the image.
I solved this by the information of 6 pages in 12 minutes which means 0.5 or half a page per minute.
Now you know you read half a page in a minute
5 pages in 10 minutes because:
10 × 0.5 = 5
8.5 pages in 17 minutes because:
17 × 0.5 = 8.5