In order to meet health and safety requirements, the arena calculates how many security staff it will need at an event by using this formula: number of security staff = a/100 if a, audience attendance, is 10500, how many security staff are needed for the event?

The formula to find the number of security staff is given.

The formula is

Number of security staff =

Where, a = Number of audience.

Here number of audience given = 10500.

So here a = 10500.

By plugging in the value of a we will get the required number of security staff.

We will get,

Number of security staff =

=

=

We have got the required answer.

The number of security staff in the event = 105.

< xcy ≅ < xby

step-by-step explanation:

in δcax and δbax,

so, δcax ≅ δbax (side-angle-side or sas)

since δcax ≅ δbax, we can conclude < acx ≅ < abx

in δacy and δaby,

so, δacy ≅ δaby (side-angle-side or sas)

since δacy ≅ δaby, we can conclude < acy ≅ < aby

now,

< acy ≅ < aby

=> < acx + < xcy ≅ < abx + < xby

=> < acx + < xcy ≅ < acx + < xby   (since < acx ≅ < abx already proved above)

subtracting < acx from both sides, we get

< acx + < xcy -< acx ≅ < acx + < xby -< acx

cancelling out < acx and -< acx from both sides, we get

< xcy ≅ < xby (proved)