Answer:
a
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
S--------T--------U
ST = T U
SU = 10
ST + TU = SU
3x + 7x = 10
10x = 10
x = 10/10
x = 1
So, what do you think happens next?
ST = 3x
Let x = 1
ST = 3(1)
ST = 3
I hope this helps.
There's not enough information given to answer number 22.
True
4x^2 -16x +16 = (2x -4)^2
A = 2x
B = 4
