We can use Pythagoras Theorem to prove that a triangle is a right-angle triangle if the square of the two shorter legs add up to be the square of the longest leg.
In this case, we need to prove that
4² + 10² = 12²<u>Pythagoras Theorem:</u>
Therefore a triangle with side lengths 4 ft, 10ft and 12 ft is not a right angle triangle.
We can use the formula for the area of a triangle to solve for these dimensions.
The formula for the area of a triangle is
.
We know that the area of the triangle is 50, so here's our new equation:
How can we solve for
and
?
Well, we know how to solve equations with one variable.
And since the height is four times the base, we can replace
with
and solve for b!
And of course, since the height is four times that,
Answer:
121.21 people per square mile
Step-by-step explanation:
area = 1/2(12 + 21)(14) = 231 mi²
28,000/231 = 121.21 people per square mile
Answer:
T= PV/NR
Step-by-step explanation:
PLS MY BRAIN HURTS LIKE AND 5 STAR
Step-by-step explanation:
see the attachment......