In order to find an area of a triangle we have to multiply the base by the height.
8.2*4.6=?
So now all we have to do is multiply to find our answer of 37.72!
(12,1):12³+1³=1728+1=1729
(10,9): 10³+9³=1000+729=1729
☺☺☺☺
D.8
A and C are out because they would get you ether lower or equal to 20, which is equal to AC and your trying to find X in AB which is so posed to be the what equals AC+BC.
AB=AC+BC
5x=20+BC
5(8)=20+BC
40=20+BC
40=20+20
AC equals 20. AB will have to equal AC+ CB. If you put in A.4 in AB 5X you will get twenty and that not what you want. You want to get a number that will get you the an answer greater to AC. So 5(8)=40.
Answer:
<h3>-10a² + 5a</h3>
Step-by-step explanation:
Given the expression (–5a)(2a – 1)
Open the bracket
(–5a)(2a – 1)
= -5a(2a) -5a(-1)
= -10a² + 5a
<em>hence the equivalent expression is -10a² + 5a</em>
He would maybe have 7.5 but I insist you the answer could be 8 too
