Pls help If a varies jointly as b and c, find a when b = 4 and c = -3.

a = -96 when b = 3 and c = -8

a=

a=4bc

a=4(4)(-3)=-48

a= - 48 when b equals to 3 is equals to - 8

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c