Answer:
an = -9 + 7( n - 1)
Step-by-step explanation:
an = first term + difference (n-1)
First term = 9
Difference = -2 - -9 = -2 + 9 = 7
an = -9 + 7( n - 1)
You can check this by substituting the values in.
a1 = -9 + 7(0) = -9
a2 = -9 + 7(2) = -9 + 7 = -2
a3 = -9 + 7(3) = -9 + 14 = 5
Answer:
The quotient of 24 and d would be
Step-by-step explanation:
Quotient is the answer of a division problem. So, you would divide 24 by d.
The average speed of the whole journey of car based mentioned speeds is 48 km/hr.
The average speed is calculated by the formula -
average speed = total distance covered ÷ total time taken. The total distance covered is sum of distance of first and return journey. Total distance covered = 100 + 100
Performing addition
Total distance covered = 200 kilometres
Now total time taken = time taken on first journey + time taken for return journey
Total time taken = distance/speed + distance/return speed
Total time taken = 100/60 + 100/40
Performing division
Total time taken = 5/3 + 5/2
Total time taken = 10 + 15/6
Total time taken = 25/6 hour
Average speed = 200/(25/6)
Average speed = (200×6)/25
Performing division and multiplication
Average speed = 48 km/hr
Learn more about speed -
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Solution
For this case we can take square root in both sides and we have:
And solving for x we got:
then the solutions for this case are:
B and E
Answer:
Step-by-step explanation:
what are we trying to figure out