This is a right angled triangle

I really need someone's help rn

i)

Step-by-step explanation:

i) As it is a right-angle triangle,

ii)From the above equation we get, that x=3 is a solution

Hence, Base= 4x=12

Altitude=5

Hence, Area of a triangle = Altitude X Height X 1/2

= 12 X 5 X 1/2

=30 cm^2

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.

c

step-by-step explanation: