Answer:
Step-by-step explanation:
given are four statements and we have to find whether true or false.
.1 If two matrices are equivalent, then one can be transformed into the other with a sequence of elementary row operations.
True
2.Different sequences of row operations can lead to different echelon forms for the same matrix.
True in whatever way we do the reduced form would be equivalent matrices
3.Different sequences of row operations can lead to different reduced echelon forms for the same matrix.
False the resulting matrices would be equivalent.
4.If a linear system has four equations and seven variables, then it must have infinitely many solutions.
True, because variables are more than equations. So parametric solutions infinite only is possible
Consider the coordinate plane:
1. The origin is the point where Sharon and Jacob started - (0,0).
2. North - positive y-direction, south - negetive y-direction.
3. East - positive x-direction, west - negative x-direction.
Then,
- if Jacob walked 3 m north and then 4 m west, the point where he is now has coordinates (-4,3);
- if Sharon walked 5 m south and 12 m east, the point where she is now has coordinates (12,-5).
The distance between two points with coordinates 
and 
can be calculated using formula
Therefore, the distance between Jacob and Sharon is
So if you price tax (for you ) for $.10 cents each and you sell 60 sandwich's in one week at least your profit would be $31 approximately since bread last longer and you still have ingredients make sure you always have some and use coupons and discounts to buy deli meats and bread + condiment or what ever you need to take the money you earn and buy and after 8 weeks you earn $1,500 then after buying a lot of stock you have $1,300 upgrade to a 500$ buying period to get water drinks and other popular food. sandwich to 4.00 $ water is 2 for 1.50 and any other food over 3.00 yu get the profit of about $2600 getting a used food trruck to caryy on th buisness
62 dollars i think tho i'm not very sure, sorry for not knowing exactly but god bless and have a good day/night/week/month/year/life <3
