Step-by-step explanation:
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- Principal ( P ) = $ 4000
- Rate ( R ) = 3 %
- Time ( T ) = 4 months =
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~Plug the known values and then simplify !
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- Principal ( P ) : The money which is borrowed or deposited is called principal.
- Interest ( I ) : The additional amount of money which is paid by borrower to the lender is called interest.
- Time ( T ) : The duration of time for which principal is deposited or borrowed is termed as time period.
- Rate ( R ) : The condition under which the interest is charged is called rate.
- Amount ( A ) : The sum of principal and interest is called an amount.
Hope I helped ! ♡
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The answer would be 15 square root 10
Where is the rest of the question?
We can't eliminate as is so we have to change something up there in the equations to get either the x values the same number but opposite signs, or the y values the same number but opposite signs. I chose to change the y values to the same number but different signs. In the first equation y is -3y and in the second one, y is -8y. The LCM of both of those numbers is 24, so we will multiply the first equation by an 8 (8*3=24) and the second equation by 3 (3*8=24) but since they are both negative right now, one of those multiplications has to involve a negative because - * - = +. Set it up like this:
8(-10x - 3y = -18)
-3(-7x - 8y = 11)
Multiply both of those all the way through to get new equations:
-80x - 24y = -144
21x +24y = -33
Now the y's cancel each other out leaving only the x's:
-59x = -177 and x = 3. Now plug that 3 into either one of the original equations to find the y value. Either equation will work; you'll get the same answer using either one. Promise. -7(3) - 8y = 11 gives a y value of -4. so your solution is (3, -4) or B above.