7. you are painting a large wall mural. the wall length is 3 times the height. the
area of the wall is 300 ft? .
a. what are the dimensions of the wall?
b. if each can of paint covers 22 ft? , will 12 cans be enough to cover the wall?

The wall length is 3 times the height.

The area of the wall is 300 sq. ft.

Height H = X

Length L = 3X

Area S = H x L = X x 3X = 300

3(X x X) = 300

X x X = 300/3 = 100

X = 10

a. What are the dimensions of the wall?

Height H = X = 10 ft

Length L = 3X = 30 ft

b. If each can of paint covers 22 sq. ft?, will 12 cans be enough to cover the wall?

12 cans will cover 22 x 12 = 264 sq. ft

The mural is 300 sq. ft.

So, 12 cans is not enough. You will need 14 cans.

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this