Answer:
<h3>
A = 0.5(2x+6)(6x+13) = 6x² + 49x + 78</h3>
Step-by-step explanation:
H = 2x+6 - the hight
3H = 3(2x+6) - triple the hight
3H-5 = 3(2x+6) - 5 - five less than triple the height
Area of triangle: A = 0.5BH
B = 3(2x+6)-5 = 6x + 18 - 5 = 6x + 13
H = 2x+6
So:
A = 0.5(2x+6)(6x+13) = (x+6)(6x+13) = 6x² + 13x + 36x + 78
A = 6x² + 49x + 78
Answer:
I think its c but im not sure
Step-by-step explanation:
Answer:
c = 41
Step-by-step explanation:
a^2 + b^2 = c^2
Pythagorean Theorem
Mr Sharrone can do 1/3 of the job each hour
<span>the assistant does 1/5 of the job each hour </span>
<span>1(1/3) + H (1/5) = 1 (complete job) </span>
<span>1/3 + 1/5 H = 1 </span>
<span>1/5 H = 1 - 1/3 = 2/3 </span>
<span>H = (2/3) / (1/5) = 10/3 = 3 1/3 hours to complete the job</span>
