Answer:
-h - 2 > -7
Step-by-step explanation:
-(-13) - 2 > -7
13 - 2 > -7
11 > -7
Answer:
75000
Step-by-step explanation:
We can use ratios to solve. Put the scale length over the real length
1 15
------------ = ----------------
5000 x
Using cross products
1x = 15*5000
x =75000
Answer: 36
Step-by-step explanation:
27+9=36
Answer:
3
Step-by-step explanation:
m=y2-y1/x2-x1
-3+2/8-5
-1/3
perp. = negative reciprocal
3
Answer:
it will take t= 12.64 seconds
Step-by-step explanation:
the voltage drop rate dV/dt will be
dV/dt=-k*V
then
∫dV/V=∫-kdt
ln(V/V₀)= -k*t
V=V₀*e^(-k*t)
in order for the voltage to drop 10 percent of its original value , then
(V₀-V)/V₀= 0.1 (10%)
[V₀- V₀*e^(-k*t) ] / V₀ = 0.1
1 - e^(-k*t) = 0.1
e^(-k*t) = 0.9
t = (- ln 0.9)/k = 120* (- ln 0.9) = 12.64 seconds
t= 12.64 seconds