If I invested part of my 10,000 dollars in an account that earned 3.1% interest for one year, and the other part at 2.6% for one year, how much had I invested in each account if the total interest from both accounts is 3000?

the answer is 844

step-by-step explanation:

it is 844 because if you add 836.50 + 7.5 you will get 844

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.

=

x=0.8898305 is the answer to that equation