Answer:
A
Step-by-step explanation:
Answer:
Step-by-step explanation:
Use the formula
where P is the initial investment, r is the interest rate in decimal form, and t is the time in years. Filling in what we are given:
and simplifying a bit:
and a bit more:
A(t) = 5000(1.340095641) so
A(t) = 6700.48
Key words of this equation are of which means multiply. This means that essetnially it is expressing 4/1 multiplied by 5/12 which is 20/12 which is 1.7 (rounded)
X^2-y^2=55
this means that
(x+y)(x-y)=55
we know that x-y=11 so we can write
(x+y)(11)=55
x+y=55/11 we divide by 11 and we obtain
x+y=5
x-y=11 this means
x=y+11 we replace in the other equation (x+y=5)
y+11+y=5
2y=5-11
2y=-6
y=-3
and you find out that also
x=8
