Which of the following would be a good estimate for -7.94 - 2.31?

-10

Step-by-step explanation:

If you round 7.94 up to 8 and round 2.31 down to 2, then it’s -8-2.

4th option is correct xy=-10

if this was to u plzz mark me the brainliest

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