let x be the number of adults
let y be the number of child

3.5 x + 2.25 y = 50

x+ y =20 y = 20 - x

3.5 (20-y ) + 2.25 y = 50

70 - 3.5 y +2.25y =50

70 -1.25 y = 50

y = 16

and x = 4

8 0

3 years ago

Is 0.9 gram of crystal meth illegal in oregan (100 points)

Paul [167]

Answer:

zogng zong

Step-by-step explanation:

5 0

3 years ago

A number added by 7 is the same as that

boyakko [2]

Answer:

$x+7=4x-11$

Step-by-step explanation:

Hi there!

Let $x$ represent "the number".

A number added by 7 is the same as that number times four minus eleven.

A number added by 7 ⇒ $x+7$

Is the same as ⇒ $x+7=$

The number times four ⇒ $x+7=4x$

Minus eleven ⇒ $x+7=4x-11$

I hope this helps!

4 0

3 years ago