Multiplying -45 and -85
So 3825 is the final answer.
So 3825 is the final answer.
0.7x-y=4.22 5-0.8x= 0.2y
1 answer:
The solution of the set of equation is
x=6.217
y=0.132
<u>Step-by-step explanation:</u>
given the set of equations
0.7x-y=4.22(1)
5-0.8x=0.2y
-0.8x-0.2y=-5 (2)
multiply (1) and(2) by 10
7x-10y=42.2(3)
-8x-2y=-50(4)
solve (3) and (4) using elimination method
⇒-40x-10y=-250(5)
(5)-(3)
-47x=-292.2
x=6.217
substituting value of x in 3
we get y=0.132
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Answer:
Option D
Step-by-step explanation:
Given question is incomplete; here is the complete question.
Asako deposits $1000 into a bank that pays 1.5% interest compounded annually. Which inequality can she use to determine the minimum time in years 't' she needs to wait before the value of the account is 20% more than its original value?
A. 1000 . 1.01t > 1200
B. 1000 . 1.01t > 1.2
C.
D.
Formula to get the final amount by compounding is,
Final amount =
Here, r = rate of interest
n = number of compounding in a year
t = Time or duration of investments (In years)
Initial amount = $1000
Final amount = 20% more than its original value = $(1000 + 0.2×1000) = $1200
r = 1.5% = 0.015
Inequality that represents the final amount 20% more than the initial value,
> 1200
> 1.2
Therefore, Option D will be the correct option.