Number one is the 2nd choice
Answer:
h = 2A / (b1 + b2)
Step-by-step explanation:
A = 1/2h (b1 + b2)
Divide both sides by 1/2 (b1 + b2)
h = A / 1/2 (b1 + b2)
h = 2A / (b1 + b2)
Answer:
3.50
Step-by-step explanation:
Necklace has beads and a pendant
b +p
There are 6 necklaces at a cost pf 43.80
6(b+p) =43.80
The beads for one necklace cost 3.80 so replace b with 3.80
6(3.80+p) =43.80
Divide each side by 6
6(3.80+p)/6 =43.80/6
3.80 +p = 7.30
Subtract 3.80 from each side
3.80+p-3.80 = 7.30 -3.80
p =3.50
Answer:
A = 328 tons, B = 79 tons.
Step-by-step explanation:
A + B = 407
A - B = 249
Cancel b out of the equation, then add the rest.
2A = 656, A=328 tons
A + B = 407, B = 407-328
B = 79 tons
