Lucy's racehorse weighs 400 kilograms. how much does it weigh in grams?

400 Kilograms =  400,000 Grams  :)

b. the decimal could be two-tenths.

step-by-step explanation:

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!