Answer:
8.7
Step-by-step explanation:
20^2-18^2=76
square root of 76 is 8.7 to the nearest tenth
Answer:
Step-by-step explanation:
nth term = a + (n-1)d
9th term = 4 + 8 * 2
= 4 + 16
=20
Answer:
are you looking for x or what
Step-by-step explanation:
Answer:
<h2>
70cm/s</h2>
Step-by-step explanation:
Area of a square with side of length L is expressed as A = L². The rate at which the area is increasing will be expressed as dA/dt.
dA/dt = dA/dL * dL/dt where
dL/dt is the rate at which each side of the square is increasing.
Since dA/dL = 2L, dA/dt = 2L dL/dt
Given dL/dt = 5cm/s and the Area of the square = 49 cm²
49 = L²
L = √49
L = 7cm
dA/dt = 2(7) * 5
dA/dt = 14*5
dA/dt = 70cm/s
The rate at which the area of the square is increasing is 70cm/s
