Answer:
7x+2.8y or y= -2.5x
Step-by-step explanation:
add 9x to -2x subtracy 5.3y from 8.1y switch sides of the x by subtracting it from both sides then divide the 2.8 to get -2.5x
It does not say simple or compound interest.
Simple interest is rarely used these days, so assume compound.
Use the standard formula:
future value = present value*(1+rate/n)^(nt)
n=number of times interest is compounded per year (=1)
t=number of years
Plugging values,
200=100(1.09)^t
1.09^t = 2
take log
t(log(1.09))=log 2
t=log(2)/log(1.09)=0.6931/0.08618=8.04 years.
Answer:
I am pretty sure it is B
Step-by-step explanation:
:)
Answer:
sinx
Step-by-step explanation:
hello :
note :
for all x in ℝ : 1) sin(x+2π) = sinx 2) sin(π-x) = sinx
in this exercice :
3π - x = 2π+(π - x)
sin(3π - x) = sin(2π +(π - x)) =sin(π-x) = sinx
Answer:
I think its 2 hours 30 minutes
Step-by-step explanation:
