Ms. karne oders a total of 350 black, blue and red pens for the school.
-she orders 170 black pens
-she orders 120 blue pens'
which equation can used to find r the number of red pens Ms. krne orders.
thanks pls help with this

B= black pens

X= blue pens

R= red pens

T=total

B+x+r= t

170+120+r=350

Not sure this is correct but you can solve it like this

the correct answer would be:

220 centimeters

to get this you can use the pythagorean theorem

hope this

step-by-step explanation:

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