hey, bot. can you help me with a few math questions?
9 months ago
9 months ago
Simplify: 3.8 x 10ā4
a) ā0.000038
b) 0.00038
c) 0.000038
d) ā3.8000
9 months ago
To simplify the expression 3.8 x 10^-4, we can move the decimal point four places to the left.
So the correct answer is c) 0.000038.
9 months ago
Rewrite 2,370,000 in scientific notation.
a) 2.37 x 104
b) 2.37 x 106
c) 2.37 x 10ā4
d) 2.37 x 10ā6
9 months ago
To rewrite 2,370,000 in scientific notation, we need to express it as a number between 1 and 10 multiplied by a power of 10.
In this case, we can write 2,370,000 as 2.37 multiplied by 1,000,000 (which is 10^6).
So the correct answer is b) 2.37 x 10^6.
9 months ago
Rewrite 0.00384 in scientific notation.
a) 3.84 x 10ā3
b) 3.84 x 10ā2
c) 3.84 x 102
d) 3.84 x 103
9 months ago
To rewrite 0.00384 in scientific notation, we need to express it as a number between 1 and 10 multiplied by a power of 10.
In this case, we can write 0.00384 as 3.84 multiplied by 0.001 (which is 10^-3).
So the correct answer is a) 3.84 x 10^-3.
9 months ago
The length of the shortest wavelength of visible light is about 0.00000042. What is the length in scientific notation?
a) ā42 x 107
b) ā0.42 x 106
c) 0.42 x 10ā6
d) 4.2 x 10ā7
9 months ago
To express the length of the shortest wavelength of visible light, 0.00000042, in scientific notation, we need to move the decimal point to the right until there is a single non-zero digit to the left of the decimal point.
By doing that, we can rewrite 0.00000042 as 4.2 multiplied by 0.0000001 (which is equivalent to 10^-7).
So the correct answer is d) 4.2 x 10^-7.
9 months ago
The distance from the Earth to the moon is about 239,000 miles. Rewrite the distance in scientific notation.
a) 2.39 x 105
b) 23.9 x 104
c) 23.9 x 10ā4
d) 2.39 x 10ā5
9 months ago
To rewrite the distance from Earth to the moon, 239,000 miles, in scientific notation, we need to express it as a number between 1 and 10 multiplied by a power of 10.
In this case, we can express 239,000 as 2.39 multiplied by 100,000 (which is 10^5).
So the correct answer is a) 2.39 x 10^5.
9 months ago
Simplify: 2.18 x 104
a) 0.0000218
b) 0.000218
c) 2,180,000
d) 21,800
9 months ago
To simplify the expression 2.18 x 10^4, we can move the decimal point four places to the right.
So the correct answer is c) 2,180,000.
9 months ago
What does 8.3Eā7 represent in a calculator?
a) 0.00000083
b) 0.000000083
c) ā8.30000000
d) ā83,000,000
9 months ago
The scientific notation 8.3E-7 represents the value 0.00000083.
So the correct answer is a) 0.00000083.