Help!! I have no idea how to do this

Mathematics

2 answers:

Hoochie [10]3 years ago

6 0

The formula for finding the axis of symmetry is x = -b/2a
So we get 2/-2
x = -1

Blizzard [7]3 years ago

5 0

The answer is -1 yourwelvome

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Driving 25 miles total. Already driven 11 miles. What fraction of the way have we driven?

-BARSIC- [3]

Answer:25-11=14 so the fraction would be 11/25

Step-by-step explanation:

25-11=14

11/25 miles

7 0

3 years ago

Read 2 more answers

A delivery truck is transporting boxes of two size: the combined weight of a large box and a small box is 65 pounds. The truck i

Bas_tet [7]

pretty much about the same as before.

a = weight of a large box

b = weight of a small box.

we know their combined weight is 65 lbs, thus a + b = 65.

we also know that the truck has 60 large ones, and 55 small ones, thus 60*a is the total weight for the large ones and 55*b is the total weight for the small ones, and we know that is a total of 3775, 60a + 55b = 3775.

$\bf \begin{cases} a+b=65\\ \boxed{b}=65-a\\ \cline{1-1} 60a+55b=3775 \end{cases}\qquad \qquad \stackrel{\textit{substituting on the 2nd equation}}{60a+55\left( \boxed{65-a} \right)=3775} \\\\\\ 60a+3575-55a=3775\implies 5a+3575=3775\implies 5a=200 \\\\\\ a=\cfrac{200}{5}\implies \blacktriangleright a = 40 \blacktriangleleft \\\\\\ \stackrel{\textit{since we know that}}{b=65-a\implies }b=65-40\implies \blacktriangleright b=25\blacktriangleleft$