60:13 is the answer . hope this helps
Answer:
(a + 1)²(a + 7).
Step-by-step explanation:
The original expression:
Factor each denominator:
Factor out
Multiply each term by the opposite denominator and add:
Remove brackets:
The least common denominator is (a + 1)²(a + 7).
Answer: After 210 seconds they with next flash at the same time.
Step-by-step explanation:
Given: Ardem has two lights.
One flashes every 15 seconds the other flashes every 42 seconds.
If they started flashing at the same time, then the number of seconds after that they with next flash at the same time = LCM (15, 42) [LCM - Least common multiple]
Prime factorization of 15 = 3 x 5
Prime factorization of 42 = 2 x 3 x 7
Then, LCM (15, 42) = 2 x 3 x 5 x 7 = 210
i.e. After 210 seconds they with next flash at the same time.
Should be 38.89.
Since the number in between 88 and 90 is 99, it will be, or should be, 38.89.
Answer:
270
Step-by-step explanation:
Area is length times width; 15 times 18 = 270