28 oz for $4.20. Hope this helps :)
Step-by-step explanation:
for any matrix multiplication number of columns of first matrix should be equal to number of rows of second matrix.
For AB
A has 3 columns and B has 3 rows so it matches . Hence can be multiplied.
For BA
B has 2 columns and A has 2 rows it also matches so can be multiplied
Answer: $400
Step-by-step explanation:
So first you set it up in a equation. You put the amount she put in the bank over x (the x represents her full salary) which equals the percent she already spent over her full salary. That would be 120/x=30/100 you would then cross-multiply to get 12,000 = 30x. you then divide 30 from both sides to get x =400.
Answer:
27/72 IS MY best guest
Step-by-step explanation:
Answer:
X = - 5/3 or X = -1.6
Step-by-step explanation:
Move variable to the left hand side and change its sign
Collect like terms
Divide both sides of the equation by -3