Answer:
there are 80 students
Step-by-step explanation:
you divide 9 by 90 to find how many teachers there are, then subtract it by 90
Answer:
See attached picture.
Step-by-step explanation:
Solve the inequality:
Graph the solution by placing a closed dot (or filled in dot) on 17 on the number line. This is closed or filled in since z is less than or equal to. Then for the less than part, shade to the left of 17.
Answer:
See Below
Step-by-step explanation:
The surface area of cylinder is given by the formula:
Where
r is radius ( diameter is 4, so radius is 4/2 = 2)
h is height ( h = 9)
Lets find original surface are:
<u>Halving diameter:</u>
diameter would be 4/2 = 2, so radius would be 2/2 = 1
So, SA would be:
<u>Halving height:</u>
Height is 9, halving would make it 9/2 = 4.5
Now, calculating new SA:
Original SA is ,
Halving diameter makes it
Halving height makes it
So, halving diameter does not have same effect as halving height.
Answer:
600 seats
Step-by-step explanation:
We know there is 120 seats on a balcony and that is of the total seats, we want to find the total number of seats so,
120 seats =
We know that a whole fraction sums to 1 so for example
120 seats =
Multiply both sides to make it a whole fraction
600 seats =
So if there is 120 seats and that number is only of the total number of seats then the total number of seats is 600