Answer:
there were 200 children and 500 adults at the show
Step-by-step explanation:
7x+10y=6400
x+y=700
x=700-y
7(700-y)+10y=6400
4900-7y+10y=6400
-7y+10y=1500
3y=1500
y=500
x=700-y
x=700-500
x=200
Answer:
Step-by-step explanation:
discriminant=b²-4ac=8²-4(7)(2)=64-56=8
Answer:
<em>y = 4x - 57 </em>
Step-by-step explanation:
(
,
)
(
,
)
m =
y -
= m ( x -
)
~~~~~~~~~~~~~~~
( 15 , 3 )
( 19 , 19 )
m =
= 4
y - 3 = 4 ( x - 15 )
<em>y = 4x - 57</em>
$10.62 / 61lb =$7.05 / 4 lb
se invierte $7.05 y 61 lb
$10.62/ $7.05 =61lb / 4lb
simplifica
$3.54/$2.35=61/4lb