Answer:
One forth of 20 is 5, so there are 5 kindergarten and first grade classrooms.
5 x 2 is 10 so there are 10 second and third grade classrooms.
10 + 5 is 15.
20 - 15 is 5.
There are 5 forth and fifth grade classes.
Step-by-step explanation:
Answer:
z=12
Step-by-step explanation:
It is given that x varies jointly as y and z, it means



where, k is the constant of proportionality.
It is given that x=8 when y=4 and z=9


Divide both sides by 36.


The value of k is 2/9.

We need to find the value of z when x=16 and y=6.
Substitute x=16 and y=6 in the above equation.


Multiply both sides by 3.

Divide both sides by 4.

Therefore, the value of z is 12.
50 tens = 50 x 10
50 x 10 = 500
your answer is 500
hope this helps
Answer:
simple, 20 cm, it literaly gave u the answer.
Step-by-step explanation:
can i have a brainliest pls?
Hey!!
here is your answer >>>
Let's take the total amount as 'X'
Then,
(40/100)X = 24
2x /5 = 24
x = (24*5)/2
x = 12*5
x = 60!.
100% is 60
Hope my answer helps!