There are 10 less trumpet players than saxophone players. the number if saxophone players is 3 times the number of trumpet players. how many trumpet players are there

There are 5 trumpet players and 15 saxophone player

Step-by-step explanation: Let a be the number of trumpet players

Let b be the number of saxophone players

(1) a = b-10

(2) b =3a

Substitute  

(2) into (1)

(1) a =3a-10

(1) 2a =10  

(1) a = 5and

(2) b = 3(5)(2)  

b =  15

There are 5 trumpet players and 15 saxophone player

dd

step-by-step explanation:

dd

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15