Use encryption matrix A to encrypt the plain text message. matrix 2

Encrypted message = matrix 3

e11 =
e12 =
e13 =

e21 =
e22 =
e23 =

Please help algebra is kicking my butt

Three coins are flipped. what is the probability that there will be at least two tails?

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

Right triangle xyz has a right angle at vertex y and a hypotenuse that measures 24 cm. angle zxy measures 70º. what is the length of line segment xy? round to the nearest tenth. 8.2 cm 8.7 cm 22.6 m 25.5 cm