The altitudes of a triangle intersect at the

the altitudes of a triangle intersect at the "orthocenter".

Step-by-step explanation:

The orthocenter is the point where the three altitudes of a triangle meet if the triangle is acute.

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )

answer: 12   they all have at least 28 days

step-by-step explanation: haha