Cecilia ran 2 1/5 miles each day for one week. how many miles did she run altogether that week, including the weekend?

Answer is 15.4 miles

Step-by-step explanation:

So she ran each day for a week and including the weekend is 7 days so if we do 7 times 2.20 it should equal 15.4 miles, also 2 1/5= 2.20 or 2.2 same thing.. Hope this helps, Also I hope I read the question right :/

i think it would be 42cm

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204