The answer is B) x^3-1 because it's the only one with the 3rd degree
69, 70, 71, and 72
69 and 71 are the first and third digits. 69+71=140
Answer:
Let the distance of school and house is x k m
Then time taken at speed 2.5 km\hr=
2.5
x
hr
And time taken at speed 4 km\hr=
4
x
hr
∴
2.5
x
−
4
x
=
60
12
⇒
10
4x−2.5x
=
5
1
⇒x=3 km
Then the distance of school and house is 3 k m
may this help you
Standard deviation = √(n * p * q)
You are given n and p
q = 1 - p
q = 1 -0.2 = 0.8
Standard deviation = √(21 * 0.2 * 0.8)
=√3.36 = 1.83
The answer is A.
Answer:
1200 shirts were sold.
400 pants were sold.
Step-by-step explanation:
The ratio of shirts to pants sold = 3:1 (difference of 2)
800 ÷ 2 = 400
Ratio x 400 = 1200:400 (difference of 800)
