<span>The total surface area is SA = 6 </span>×

;
SA = 6 ×

= 6 × 81 = 486

;
Answer:
Stephanie has more than $900
Step-by-step explanation:
Represent the unknowns: a for Alexandra and s for Stephanie.
Then a + s > $2,500, and a = s + $700.
Substituting the latter into the former equation, we get:
(s + $700) + s > $2,500, or
2s > $1800
Then s > $900; Stephanie has more than $900.
Answer:
D
Step-by-step explanation:
2000=1 ton so 4000=2tons
No estoy segura e -2 ao quadrado esa es toda la pregunta
Answer:
2x^2+9x-5
Step-by-step explanation: