Because algebra means finding the unknown
it is usually used in real life
for example if if 1/2 of the legnth of a line is 8 then what is the legnth
so then 1/2 x=8 and that is algebraic
since it has x, or an unknown in it, it is an algebraic expression
X/9+3=7 should be the answer unless it’s 9/x+3=7. It’s most likely the first one.
Answer:
B: right
Step-by-step explanation:
9^2 + 12^2 = 15^2
Answer:
55
Step-by-step explanation:
Because the base is a straight line, each of the unknown angles in the triangle are 180 - 2h. This means that 360 - 4h + 40 = 180, so 400 - 4h = 180.
Now subtract -4h + 180 from both sides to get 220 = 4h so h = 55.
