Question

a = ? , b = ?

Answer 1

4/8 = a/b for the first eqn yes?

Answer 2

now you need a another eqn

Answer 3

well , we can find the distance between (12,0) and (3,9) , and that distance should be equal to a+b

Answer 4

distance between the points = sqrt [ ( 12-3)^2 + (0-9)^2 ] = sqrt [ 9^2 + 9^2]

= sqrt( 2 x 9^2) = 9sqrt(2)

Answer 5

so a/b = (1/2) --> ie b =2a , and a+b = 9sqrt(2)

2 eqns, two unknowns, pretty easy to solve yes?

Answer 6

I assume you can solve them, ill leave it to you

Answer 7

i'm alittle confuse right now

Answer 8

it doesnt help if u dont say what it is you are confused about.

nevertheless , this questionn is pretty similar to the other ones you put up ( though it is a bit harder ).

The first eqn came from ratios of intersections of parallel lines

Answer 9

then we needed to find another eqn to relate a and b , because you need two eqns to solve two unknowns , and we obverse from the picture that a+b was a distance between two points

Answer 10

(h/H)2 = 9/25; Volume of large prism/Volume of small prism= (h/H)3

Answer 11

:S, dont really undertand what u want

Answer 12

my bad n it not that one up there
a + b = sq root of (12-3)2 + (0-9)2. Once you have solved for a + b, then 4/12 = a/a+b .

Answer 13

I guess that would have been another way to get the second eqn

Answer 14

got is 12.7292206

Answer 15

are u still there?

Answer 16

what?


the answers to the question are

a=3sqrt(2)

b= 6sqrt(2)