Answer: Both answers will be

Step-by-step explanation:
Since we have given that
Cost of soccer balls = $15
Cost of baseball = $6
Cost of sweat socks = $5
a) Mr. Tonkery bought x number of soccer balls and 3 base balls .
So, our algebraic expression will be

b) Dennis, Eddie and Felix are on a base ball team. They each bought a baseball and x pair of sweat socks .
Since there are 3 members in a base ball team ,
Number of base ball they will purchase is given by

Number of sweat socks they will bought is given by

Total number they will purchase is given by

Hence, both answers will be

Answer:
It is an identity, proved below.
Step-by-step explanation:
I assume you want to prove the identity. There are several ways to prove the identity but here I will prove using one of method.
First, we have to know what cot and cosec are. They both are the reciprocal of sin (cosec) and tan (cot).

csc is mostly written which is cosec, first we have to write in 1/tan and 1/sin form.

Another identity is:

Therefore:

Now this is easier to prove because of same denominator, next step is to multiply 1 by sin^2x with denominator and numerator.

Another identity:

Therefore:

Hence proved, this is proof by using identity helping to find the specific identity.
Answer:
The length of the wall would be 12 cm
Step-by-step explanation:
step 1
we know that
On a blueprint with a scale of 1 cm = 4 ft, the length of the wall is 9 cm
so
The actual length of the wall is equal to ------> 9*4=36 ft
step 2
If the scale of the blueprint were 1 cm = 3 ft
then
The length of the wall in the new blueprint would be ----> 36/3=12 cm