Scientific notation
4.6X108
(812)(87)/(84)=
815
7vw+4cw=
4x+5=12x-7
x=1.5
Tenzing lost half of his card collection in a rainy day. He bought 5 times of the card he lost.He has 125 cards after he bought those new cards. How many cards he start with?
50 cards
The average distance between earth and moon is 3.57x105 kilometers.
change this scientific notation into stand form
357000 km
（7w2x7)(2w2V8）=
14w4x7v8
6xh5y+3xg98y-2t5cd
9x103yh+g-2t5cd
6(8x)-7=-5x-8+3x+2
x=0.02
Nirjan is choosing a plan. Plan A charges 10$ and 0.05$ per call. Plan B charges 0.25$ per call. At how many phone call both plan charges the same?
50 calls
12x1012+(34x10-23)
4.6x10-10
(ab10/ab6)23
a23b27
3x2-5x-2x+x2
4x2-7x
x-(12*5)-5=-4x+（12*3）
20.2
Tenzing is selling music CDs. Each CD cost 5$. How many CDs can Andy bought from Tenzing if he has 6.1x1011$?
122000000000CDs
0.3x104x12x10-12
1.17x10-7
x2+62-32=52
x=5
4x6yw7wxv12x5w=
10080x3w3v
9(4x)-(5*8)=-15x/52
x=1.0923
Chen Yu is selling T-shirts. He start with 10$ and 3$ per T-shirt. Kaiqi is also selling T-shirts. He start with 15$ and 2$ per T-shirt. Who earns more money when they both sell 20 shirts?
Chen Yu sell 15 more dollar than Kaiqi
3x10-34(6.6x103)
3.6x10-31
[(4x)4+(52x)3]4
63524x4
(5x)2(98x/7x)+2x(5*6)
25x216x+30
[3x-4/(4-2)+8]+[(9/3)4+(6)3]=85x+7
x=3.544910179640719
The weather in Florida is twice higher than the weather in NJ. The weather in NJ is 5 degrees higher than the weather in NY. The weather in NY is 20 degrees. What is the weather in Florida?
50 degrees