Answer:
(12-7x)
Step-by-step explanation:
144 − 49x²
by observation, we can see that 144 = 12² and 49 = 7²
hence we can rewrite the equation
144 − 49x²
= 12² - 7²x²
= 12² - (7x)²
recall that the expression x² - y² = (x+y)(x-y)
hence,
12² - (7x)²
= (12 + 7x)(12-7x)
(12-7x) appears in the expression above, hence 12 -7x is a factor
The answer is zero. Have a great day!
For the first digit you have 10 options (0..9).
For each next digit you can't choose the same digit, so you have 9 options.
So number of combinations is 10*9*9*9*9 = <span>65610</span>
Answer:
2 hours 40 minutes
Step-by-step explanation:
If you add 3 hours, it will be 7:45
You subtract 20 minutes to get to 7:25
3 hours - 20 minutes = 2 hours 40 minutes
Answer:
mee too
Step-by-step explanation:
