Simplify
-6√20+2√45+7√5

show Woking out to prove ans please

Step-by-step explanation:

Using the rule of radicals

× ⇔

Simplifying the radicals

= = × = 2

= = × = 3

Thus

- 6(2) + 2(3) + 7

= - 12 + 6 + 7

=

a

step-by-step explanation:

ppopibujflnnkjh un

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer