That is the Pythagorean’s theorem, used to find the largest side on a right (90 degree) triangle.
The median drawn from a vertex of a triangle intersects the opposing side at the mid point.
The three medians of a triangle intersect in a point named centroid, but that is another story.
Answer:
13.5 minutes
Step-by-step explanation:
Cross multiply
3 × 576 = 128x
3 × 576 = 1,728
1,728 = 128x
1,728 ÷ 128 = x
13.5 = x
Answer:
(x−5)(x+3)
Step-by-step explanation:
To factorise, we firstly need two brackets, each containing an x.
(x)(x)
This creates the x2 term.
Now we need to get the rest of the terms. To do this, we need two factors of −15 which will add/subtract to give us +2
The two factors that do this are −3 and 5, as −3+5=2
∴(x−3)(x+5)
You can check by expanding it out.
