8 <=u <=12
need at least 8, no more than 12
if you could have fractions of ppl it would be
8 <=u <13
Answer:
2.6 meters.
Step-by-step explanation:
5-0.9 is 4.1, minus 1.5 is 2.1.
$7 for an adult ticket
$6 for a child ticket
Answer:
22 and 7
Step-by-step explanation:
Let x and y be the two numbers we are looking for:
The statement “their sum is 29” means x + y = 29
The statement “their difference is 15” means x - y = 15
we get this system:
x + y = 29 (1)
x - y = 15 (2)
Let’s solve it :
(1) + (2) ⇒ x + y + x - y = 29 + 15 ⇒ 2x = 44 ⇒ x = 44/2 = 22
Now we replace x by 22 in equation (1) :
22 + y = 29 ⇒ y = 29 - 22 = 7
