Answer:
48x - 40y +24
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
because 4/5=0.8
and 5×0.8 = 4
Answer:
Thank you for your service. its appreciated
4/21 cannot be reduced any more than it is <span />
For x^2-49
this is a diffarence of two perfect squares. I suggest that this is memorised.
a^2-b^2=(a-b)(a+b)
so x^2-7^2=(x-7)(x+7)
so to solve x^2+x-56 you want to find out what two numbers add to 1 and multiply to make -56
since -56 is negative we know that the two number are difarent signs so that eliminatess answers B and D.
if we try answer C -8+7=-1 so the answer is not C because we want +1 not -1
then we see that 8+(-7)=1 so the answer is A
