Answer:
- I cannot see number 4
Step-by-step explanation:
r
0=4(x²+8x+16)-12
0=4x²+32x+64-12
0=4x²+32x+52
0=x²+8x+13
D=b²-4ac
D=64-52=12
x=(-b-√D)/2a
x=(-b+√D)/2a
x=(-8-2√3)/2= (-2(4+√3))/2= -(4+√3)
AND
x=(-8+2√3)/2=-2(4-√3)/2= -(4-√3)
Answer:
-8 - -11 = 3
Step-by-step explanation:
Therefore, the missing number is -11
Continuous exponential growth formula is given by:
A=Pe^(rt)
where A is the current amount
P=initial amount
r=rate
t=time
the time taken for the sample to double will be found as follows:
let:
P=x
A=2x
r=0.025
thus
2x=xe^(0.025t)
2=e^0.025t
introducing natural logs we get:
ln 2=0.025t
t=ln2/0.025
t=27.73 hours
