Answer:
hahahah Evaculate thats so funny but its 0.3916083916
Step-by-step explanation:
Speed of the first car is 30 mph and that of the second car is 20 mph.
Step-by-step explanation:
- Step 1: Let the speed of the first car be x mph. Then the speed of the second car = x - 10 mph. Distance traveled by the second car = 60 miles. Find the time taken by the second car to travel this distance.
Time = Distance/Speed
= 60/x - 10 ------ (1)
- Step 2: Find the time taken by the first car to travel given distance of 90 miles.
Time = 90/x ------- (2)
- Step 3: Given that both cars take the same amount of time, equate the 2 equations. (1) = (2)
⇒ 60/x - 10 = 90/x
⇒ 60x = 90(x-10)
⇒ 2x = 3(x - 10)
⇒ 2x = 3x - 30
⇒ -x = -30
∴ x = 30 mph
⇒ x - 10 = 30 - 10 = 20 mph
For an arithmetic sequence, a(n) = a(1) + d*(n-1)
So for n = 14, a(14) = a(1) + 13d = 46
For n = 16, a(16) = a(1) + 15d = 58
Subtracting the first equation from the second gives: 2d = 12
Dividing by 2: d = 6
Substituting into the 1st equation: a(1) + 13*6 = 46
a(1) = -32
Therefore, a(12) = a(1) + 11d = -32 + 11(6) = 34
a(n) = -32 + 11d
Answer: What ever number it is.
Answer:
The area of ABC is 60m sq.
Step-by-step explanation:
Area of triangle = 1/2×base×height
so, Area=1/2×20×6
Area= 60m sq.