Since it takes less time in September than in June, this is a DECREASE. The percent decrease. The time is different by 114 seconds, divide this by the original time of 465 seconds and then convert to a percent, by multiplying by 100. You should get 114/465 = 0.245 then x 100 = 24.5% decrease.
The "solution" of the equation would be a pair of numbers ... one
for 'a' and one for 'b' ... that make the equation a true statement.
If the equation has <em><u>two</u></em> variables in it, as this one does, then
you need <em><u>two</u></em> equations to find the solution.
E = expresso
m = muffins
2e + 3m = 10.....multiply by -2
4e + 2m = 12
----------------
-4e - 6m = -20 (result of multiplying by -2)
4e + 2m = 12
------------------add
-4m = -8
m = -8/-4
m = 2....so muffins cost $ 2 a piece <===
4e + 2m = 12
4e + 2(2) = 12
4e + 4 = 12
4e = 12 - 4
4e = 8
e = 8/4
e = 2......so expresso's cost $ 2 a piece <===
Answer:
Step-by-step explanation:
Considering the system of the equations
Divide both sides by 2
