(Reward: 15 points) This is for Lesson 6 Unit 4 (connexus students, grade 11. Quiz part 2.
(PLEASE SHOW THE PROCESS. And please answer all 3.. Please and thank you!)

Question 1: Solve the system by substitution.
-x-y-z=-8
-4x+4y+5z=7
2x+2z=4

Question 2: Solve the system by elimination.
-2x+2y+3z=0
-2x-y+z=-3
2x+3y+3z=5

Question 3: Given the system of constraints, name all vertices of the feasible region. Then find the maximum value of the given objective function.
Constaints:
x≥0
y≥0
y≤ 1/3x+3
5≥x+y
Objective Function: C=6x-4y

Thank you in advance!! This helps me (and other students) out :)

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

answer: 7

step-by-step explanation: