Let y = √4+7t
then u= 4+7t
y=√u = u^½
du/dt= 7
dy/du = ½U^-½
dy/dt = du/dt • dy/du
= 7×½U^-½
= 7/2√U
= 7 / (2{√4+7t})
Answer:
the answer is false because 3 is multiplied with 5 on the right side
Then, when substitute any number , there remain difference
Step-by-step explanation:
8x-9=5x-3
Move any equation to the opposite side. I'll use the left this time


move 6 to opp side



Answer:
$4
Step-by-step explanation:
12÷4=3
7÷7=1
3+1=4
therefore she spent 4 dollars