Answer:
Step-by-step explanation:
Let J = Jerry's age
Let M = Mary's age = 2J
M - 16 = J + 16
Substitute 2J for Mary's age
2J - 16 = J + 16
2J - J - 16 = 16
J = 16 + 16
J = 32
Jerry is 32.
Mary is twice as old as Jerry.
Mary is 2(32) = 64
Answer:
The length of the ladder is
Step-by-step explanation:
Let
L ----> the length of the ladder
we know that
Applying the Pythagoras theorem
Answer:
40ft
Step-by-step explanation:
√100=10
10*4=40ft
Answer:
The radius of the tabletop in cm is 72 cm (approximately).
Step-by-step explanation:
Given:
Circumference of tabletop is 4.5m.
So, to get the radius in cm.
Now, we convert the unit of circumference from m to cm.
( 1m = 100 cm )
.
Let the value of radius be r.
Now, putting the formula of circumference to get the radius:
Circumference=
(putting the value of π = 3.14)
Dividing by 6.28 on both the sides:
Radius = 71.65cm
Therefore, the radius of the tabletop in cm is 72 cm (approximately).
Answer:
Step-by-step explanation: