Answer:
<h2>
63mm/min</h2>
Step-by-step explanation:
Area of a triangle = 1/2 * base * height
A = 1/2bh
Rate of change of area is expresssed as dA/dt = dA/db * db/bt
db/dt is the rate at which the base is increasing.
Given db/dt = 18mm/min
A = 1/2*7b
A = 7b/2
dA/db = 7/2
The rate at which the area is changing dA/dt = dA/db * db/bt
dA/dt = 7/2 * 18
dA/dt = 7*9
dA/dt = 63mm/min
<em>Hence the rate at which the area of the triangle is changing is 63mm/min </em>
Answer:
+6 charge and −6 charge
Step-by-step explanation:
In this problem, we need to find two charges that have a sum of 0.
In option (d), both charges have the same magnitude. But they have opposite charges.
Sum means to add up charges i.e.
+6 charge +(-6) charge = 0 (they have opposite charges)
Hence, the correct option is (d).
Answer:
- 48
Step-by-step explanation:
by PEDMAS, we evaluate the exponent first before the multiplication
(-12)·(-2)²
= (-12)·(4)
= - 48
40 minutes is not a full hour so you need to convert this to hours
40 minutes / 60 minutes = 2/3 of an hour
So a car driving at the rate of 34 2/3 mph will go
34 2/3 * 2/3 = Miles in 40 minutes
40 * (4/9) = ?or
160/9 = ? or
17 7/9 Miles
