Me
olive is allowed to bring one friend on a trip with her. she does not want to play favorites.
what is not a random method of choosing a friend?
a) give each friend a half of a raffle ticket. then, put the other half in a bowl, mix it up and draw a ticket. the friend that had the other half will get to go.
b) assign every friend a color on a spinner. flick the spinner and whatever color it lands on will determine which friend get to go.
c) send a text to her friends and the first one that responds "yes" will get to go.
d) assign every friend a card, then shuffle the deck of cards and pick the one on the bottom.

Its c

Step-by-step explanation:

send a text to your friends and the first one to respond...

Step-by-step explanation:

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

144.50

step-by-step explanation:

21.5 x 13.4=288.10 divide by 2