L+S=8, L=8-S

500L+200S=2200, using L from above in this equation gives you:

500(8-S)+200S=2200

4000-500S+200S=2200

4000-300S=2200

-300S=-1800

S=6, and since L=8-S:

L=2

So Rita bought 2 large packets and 6 small packets.

5 0

2 years ago

Find the area of a rhombus if its diagonals are of lengths 12.8 cm and 8.4cm

Daniel [21]

Area =

$\frac{pq}{2}$

where p and q are it's diagonal

so according to the rule.

$\frac{12.8 \times 8.4}{2}$

$\frac{107.52}{2}$

$53.76 \\ \\$

is the answer.

hope understands 

4 0

1 year ago

Ayuda por favor

Airida [17]

Answer:

manda una foto pls es que no me deja ver lo que has puesto

Step-by-step explanation:

8 0

2 years ago