Please help me with this. Can you explain to me how to find the answer?
Multiply 3.8*10^8 by 7.2*10^-3, leave your answer in a scientific notation.
2.736*10^4
2.736*10^5
2.736*10^6
27.36*10^5
Honestly, I don't the answer to the question So please forgive the wrong answer if I pick the wrong answer.
well, try 4 *10^8 * 7*10^-3
= 28 * 10^(8-3)
= 28 * 10^5
BUT we are only allowed one digit left of decimal point
= 2.8 * 10^1 * 10^5
=2.8 * 10^6
which is pretty much like 2.736*10^6
you need a number at least 1, and less than 10
and a power of 10.
For this problem, multiply the numbers and add the powers of 10.
Then simplify to scientific notation.
3.8*10^8 by 7.2*10^-3
= (3.8 * 7.2) * 10^(8-3)
= 27.36 * 10^5
but, 27 > 10, so
= (2.736 * 10^1) * 10^5
= 2.736 * 10^6
Thank you Damon for helping him. I was trying to figure this question out but i got stumped. What is ^ as a math symbol and what does it represent ?
^ means superscript
2^3 means 2 to the third power = 2*2*2 = 8
By the way that ^ is not really a math symbol but a keyboard convention.
IDK why this comment got deleted. I don't like being referred to as him. I'm a girl who put I Don't Matter as her username. There's nothing wrong with correcting people about what gender I am. I can understand that he probably was assuming, but I have every right to correct him. So don't delete this comment
Of course! To find the product of two numbers written in scientific notation, you need to multiply their coefficients and add their exponents.
In this case, you have 3.8 * 10^8 multiplied by 7.2 * 10^-3.
First, multiply the coefficients: 3.8 * 7.2 = 27.36.
Next, add the exponents: 10^8 * 10^-3 = 10^(8-3) = 10^5.
Combining the coefficient and exponent, the answer is 27.36 * 10^5.
So the correct option is 27.36*10^5.