Malik deposited $15,000 in a savings account for which he earns 3% simple interest. if he doesn’t withdraw or deposit any more money in the account, how much will be in the account after 10 years?
it is acute.
81^2 = 6561
80^2 = 6400
18^2 = 324
80^2 + 18^2 = 6724
so 81^2 < 80^2 + 18^2 , therefore the triangle is acute.
note: in a triangle with sides a, b and c with a = longest side,
if a^2 < b^2 + c^2 the triangle is acute. in a right angled triangle a^2 = b^2 + c^2. in an obtuse angled triangle a^2 > b^2 + c^2.
answer: 990 lbs
set up the proportion, then cross multiply and solve for the unknown value (pounds).
b. 3.5 grams.
after 0.002 seconds 1/2 * 14 = 7 grams will be left.
after another 0.002 seconds ( total 0.004 seconds), 1/2 * 7 = 3.5 grams will be left.