Answer:
The formula is (base x height x 1/2) OR ([base x height] / 2)
Hope that helps!
Step-by-step explanation:
Answer:
90 (angle in a semicircle)
1) Move the non-x term to the right
x^2 +6x = -c
2) Divide the equation by the coefficient of x^2
(You don't have to because it is one).
3) Get the "x" coefficient, divide it by 2, square it then add it to both sides:
6 divided by 2 = 3
3^2 = 9
x^2 +6x +9 = -c +9
Take the square root of both sides
(x +3) = sq root (9 -c)
x = -3 + sq root (9 -c)
I’m not completely sure on this one because I never learned this but I think x = 10. This is because 40 and 8 has a connection. You just multiply by 5.
8 x 5 = 40
2 x 5 = 10
So, that means x is equal to 10.
x = 10
Hope this helps, have a great day, stay safe and positive.
:)