A sum of RM 5000 is to be invested in three investments at an interest rate of 6%, 7% and 8% per annum respectively. The total annual income is RM 358. Let x, y and : represent the sum invested at the rate of interest of 6%, 7% and 8% per annum respectively. If the combined income from the first two investments is RM 70 more than the income from the third, find the amount of each investment by using the inverse matrix method.​

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

step-by-step explanation:

i found the koficent of the linear function and i foun c acordind to the strict formula y=kx+c and then i took 2 as an x and replacet it on the formula i found and then foun the y