A ladder placed 7 feet away from a wall, and makes 45 angle with ground. what is the length of the ladder?

L = 14/OR 9.899

Step-by-step explanation:

cos(angle) = adjacent/ hypotenuse

hypotenuse = length of ladder

adjacent = 7 feet

length of ladder = L

1/L = cos(45)/7

L = 7/cos(45)

MAKE SURE CALCULATOR IS IN DEGREE MODE

L = 7/(/2)

L = 14/

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,