Need solving problem 3,4 and 5 . linear algebra for problems 3-7, solve the system using either gaussian elimination with back substitution or gauss-jordan elimination. 3. 2x +3y+z=10 2x-3y-3x=22 4x- 2y 3z=2 4. 2x y2z -4 2x 2y 5 2x- y+62#2 3x-2y + 1122.16 3x y7z--11

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

Apolynomial has two terms. check all of the factoring methods that should be considered. common factor difference of cubes sum of cubes difference of squares perfect-square trinomial factoring by grouping

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?