Answer:Let the base of the 15ft long ladder be placed x ft away from the wall so that it exactly reaches the top of a 12- foot tall wall.
By Pythagorean theorem
12
2
+
x
2
=
15
2
⇒
x
2
=
15
2
−
12
2
=
81
⇒
x
=
√
81
=
9
ft
Step-by-step explanation:
Answer:
Cliff get £36
Step-by-step explanation:
Alan, Barry and Cliff share money in the ratio 1:4:6
Alan and Barry share £30.
So, let they share 1 x ,4 x.
We can set up equation as 1 x+4 x=30
Combine like terms 5 x=30
Divide both sides by 5.
x=6.
So, Cliff will get 6 x=6(6)= 36.
Answer:
11.95
Step-by-step explanation:
If she had $6.95 and she owed her friend 5 dollars that means the friend gave her 5 dollars. So $6.95 + $5 = to $11.95. So that's how much the snack cost