When the british system of units was first developed, what was the most common object used as a basis for measuring length?

step-by-step explanation:

the answer is 128

answer: b

step-by-step explanation:

yes

step-by-step explanation:

so of course you want to start by plugging the 5 in which goes to 7(5)+3(5)=50 because 7*5=35 and 3*5=15 and then add them together, then plug in the 5 to the other equation as well 9(5)+5=50 because 9*5= 45 and then add 5 and so yes they are equivalent.

2y+y=5

add 2y and y