The table shows weights for different US coins. Allen has one of
each coin in his hand.
Round each weight to the nearest whole gram. Then estimate the total
weight of the coins in Allen's hand.
Coin
Weight
Penny
2.500g
Nickel
5.000 g
Dime
2.268 g
Quarter Half Dollar
5.670 g 11.340 g
✓ DONE

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?