Thomas invested $1498 at 6% simple interest per annum
Calculate:
1
The interest, in dollars, earned after six months
6
yu. au
1498 x
100 x
(11)
The TOTAL amount of money in his account after 3 years

Step-by-step explanation:

a) The simple interest is given by the formula ...

  I = Prt

where P is the principal invested at rate r for t years. Putting the given values in the formula, we find ...

  I = $1498·0.06·(6/12) = $44.94 . . . . interest earned in 6 months

__

b) The account balance in 3 years will be the initial principal amount plus earned interest.

 A = P(1 +rt) = $1498(1 +0.06·3) = $1767.64 . . . . balance after 3 years

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.