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Algebra 1
> 0.9 Solve a system of equations using substitution: word problems US9
Learn with an example
Write a system of equations to describe the situation below, solve using substitution, and fill
in the blanks.
Barry and Devon are both selling cookie dough for a fundraiser. Although Barry has already
sold 5 tubs, Devon hasn't sold any yet. If Barry starts selling 2 tubs per day and Devon
begins selling 3 tubs per day, they will eventually sell the same amount of cookie dough. How
many days will that take? How many tubs will each sell?
In
days, each will sell
tubs of cookie dough.
Submit

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4

The school track has eight lanes. each lane is 1.25 meters wide. the arc at each end of the track is 180. the distance of the home straight and the radii for the arcs in the 1st 4 lanes are given. s=85m r1=36.5m r2=37.75m r3=39m r4=40.25m part one: find the radii of lanes 5 through 8 of the track. show your work. part two: if max ran around lane one, how far did he run? show your work and explain your solution. part three: max wants to run a total of three laps around the track, choose two additional lanes (2-8) for him to run and find the distance around those two lanes. show your work and round to the hundredths. part 4: based on your lane choices in part three, what was the total distance max ran in the three laps around the track?