Answer:
5
Step-by-step explanation:
each daughter has 2 sisters and 2 brothers but each son had 1 brother and 3 sisters

<span>Substitute (I) into (II), we have:
</span>







<span>Replace (II) in (I), we have:
</span>



Answer:
each student sell:
Lori = 55 pizzasSteve = 69 pizzas<span>
</span>
Since the 50 remains the same every time, is has no letters next to it in the equation. The 20, however, is multiplied by the amount of hours, and will therefore have an h next to.
20h + 50- the answer is a.
Answer:
298
Step-by-step explanation:
Answer:
1890 ml
Step-by-step explanation:
if you add it all together