Answer:

Step-by-step explanation:
We are given that
By ohm's law

R=389 ohm
I=0.03 A


We have to find rate of change of current I means 
Differentiate the equation w.r.t t

Substitute the values then we get





Hence, the current I is changing at the rate=-0.00016A/s
There’s my answer. I hope u enjoy ir
3.25 repeating as a fraction is 1.25 plus 1.25 plus 1.25 that will equal 3.25.
Answer:

Step-by-step explanation:
we know that
The area of the trapezoid is equal to

step 1
Find the measure of angle DAE
m∠ADC+m∠DAE=180° -----> by consecutive interior angles
we have
m∠ADC = 134°
substitute
134°+m∠DAE=180°
m∠DAE=180°-134°=46°
step 2
In the right triangle ADE
Find the length side AE
cos(∠DAE)=AE/AD

step 3
In the right triangle ADE
Find the length side DE
sin(∠DAE)=DE/AD

step 4
Find the area of ABCD

we have

substitute


Volume=lwh
So if 7.35 m^3 is the volume, divide it by (4.2x0.5) (50 cm=0.5 m)
7.35/2.1=3.5
So the missing value, or width, is 3.5 meters