Answer:
30 seconds
Step-by-step explanation:
10x10=100 3x10=30
Answer:
Amount each friend pays for the gift = $20
Step-by-step explanation:
Market price of a gift = $70
The store manager takes $10 off the market price.
Marked down amount = $10
New cost price = Marked price - Marked down amount 
The cost of the gift is divided among three friends.
This means that the cost of gift which is $60 is divided by three to get each one's contribution in the gift.
∴ Amount each friend pays for the gift 
Is 3 cm the height of the triangle?
28 / 49
divide by 7 at top and bottom
(28/7) / (49/7)
4 / 7
There is a 57% chance that both marbles will be red, and a 42% chance that the two marbles will be blue.