840=2 times 2 times 2 times 3 times 5 times 7
1. A
2. D
not so sure about the last one
Answer:
30mm
Step-by-step explanation:
Small Parallelogram= 5×10
Big Parallelogram= 15×?
15÷5=3
?÷10=3
?=30
30÷10=3
-3x+7y=5 (x2) -> -6x+14y=10
-6x+14y=10
-8x+14y=-10
——————— -
2x=20
x=20/20
x=1
Susbstitute x=1,
-8x+14y=-10
-8(1)+14y=-10
-8+14y=-10
14y=-10+8
14y=-2
y=-2/14
y=-1/7
I hope it helps
If Brian grew 8 flowers with 4 seed packets, then:
1 seed packet = 2 flowers
For Brian to have 12 flowers in his garden, he will need 6 seed packets.
6 x 2 = 12.
Answer: 6
Hope this helps! Good luck.