Answer:
Step-by-step explanation:
ax + by = c
H=height of ostrich
k=height of kiwi
h is 20 more than 4 times k
k=20+4k
k=108
108=20+4k
minus 20 from both sides
88=4k
divide both sides by 4
22=k
answer is A
3L + 5S = 90.....multiply by -3
9L + 7S = 215
-------------------
-9L - 15S = -270 (result of multiplying by -3)
9L + 7S = 216
-------------------add
- 8S = - 54
S = 54/8 = 6 3/4 or 6.75 kg (for the small boxes) <===
3L + 5S = 90
3L + 5(6.75) = 90
3L + 33.75 = 90
3L = 90 - 33.75
3L = 56.25
L = 56.25/3
L = 18 3/4 or 18.75 kg (for the large boxes) <===
There are 4 weeks in a month,so 35x4=140$.
Answer:
50.75
Step-by-step explanation:
253.75/5
