Math(急~~)請列式ee

[匿名]

2011-09-25 2:33 am

Express the value of each of the following in scientific notation
a. 250000×0.0000004
c. (1.2×10^ - 4) × (8.5×10 ^ -20)
e. 9.45×10^9 ÷ 3.15×10^5
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a. 2.3× 10^4
c. ( 2.1×10^3) × ( 3 × 10 ^ -6)
e. 8.04×10 ^ 6 ÷ 4.02 × 10^3
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Express each of the following binary numbers in expanded form with base 2
★★★ (2) = 二進制
a. 11(2)
c. 1001(2)
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a. 1×2+1×1
c. 1×2 ^4 + 1×^3 + 1×1
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a. 10001(2)
c. 101101(2)
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convert the following denary number into binary numbers
a. 36
c. 72

回答 (1)

ShikaP

2011-09-25 5:30 am

✔ 最佳答案

sol

Express the value of each of the following in scientific notation
a. 250000×0.0000004=0.1=1*10^-1
c. (1.2×10^ - 4) × (8.5×10 ^ -20)=1.02*10^-23
e. 9.45×10^9 ÷ 3.15×10^5 =3*10^4
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a. 2.3 × (10^4) = 23 000
c. (2.1 × (10^3)) × (3 × (10^(-6))) = 0.0063
e. (8.04×10 ^ 6) ÷(4.02 × 10^3)=2000
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Express each of the following binary numbers in expanded form [binary numbers]

a. 11(2)=2+1=3
c. 1001(2)=2^3+1=9
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a. 1×2+1×1=11(2)
c. 1×2 ^4 + 1×2^3 + 1×1=11001(2)
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a. 10001(2)=1*2^4+1=17
c. 101101(2)=2^5+2^3+2^2+1=45
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convert the following denary number into binary numbers
a. 36=2^5+2^2=100100
c. 72=2^6+2^3=1001000

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