Select all of the numbers that are correctly written in scientific notation.
A. 42 x 10^5
B. 1.1 x 10^4
C. 7.0 x 20^4
D. 6.01 x 10^-4
E. 18.0 x 10^3
Can you guys help me I’m stuck I have all of them just need one helpppp!!!!!!
yeah its b & d
for the scientific notation online practice for 8th graders:
1. 71,000 (c)
2. 0.00501 (d)
3. 1.1 * 10^4 and 6.01 * 10^-4 (b & d)
4. 6.0 * 10^7 (a)
5. 9.0 * 10^6 (c)
UWO is right thanks so much
:D np man
A. 42 x 10^5 is 4.2*10^6
B. 1.1 x 10^4 ok
C. 20^4 is not simply 10^ something
D. 6.01 x 10^-4 ok
E. 18.0 x 10^3 oh my, again 1.80 * 10^4
So b and d?
but can you explain why please?
Sure, I can help you. To determine which numbers are correctly written in scientific notation, we need to understand the basic format of scientific notation. The general form of scientific notation is:
a x 10^n
Where "a" is a decimal number between 1 and 10 (inclusive) and "n" is an integer that represents the exponent.
Now, let's go through each option and check if it is correctly written in scientific notation:
A. 42 x 10^5
This number is correctly written in scientific notation. The decimal number "42" is between 1 and 10, and the exponent "5" is an integer.
B. 1.1 x 10^4
This number is correctly written in scientific notation. The decimal number "1.1" is between 1 and 10, and the exponent "4" is an integer.
C. 7.0 x 20^4
This option is not correctly written in scientific notation. The number "20^4" should be written as "2 x 10^4" since we only want the non-zero digit in the coefficients.
D. 6.01 x 10^-4
This number is correctly written in scientific notation. The decimal number "6.01" is between 1 and 10, and the exponent "-4" is an integer.
E. 18.0 x 10^3
This number is correctly written in scientific notation. The decimal number "18.0" is between 1 and 10, and the exponent "3" is an integer.
Therefore, the correctly written numbers in scientific notation are A, B, D, and E.