Answer:
5
A person with 7 credit cards has 5 credit cards
Yes, that's the definition of "midpoint."
xa + xb
xmidpoint = --------------
2
ya + yb
ymidpoint = --------------
2
(x-4)•2 < 9
the difference between x and 4 means to subtract
and twice that means to double or times by 2
and all that’s LESS than 9
so the sign opens up towards the 9
You need to make a proportion
beats 28 x
seconds 4 30
cross multiply and divide
(28) (30) = 4x
840 = 4x
210 = x
