Answer:
$12.55
Step-by-step explanation:
Subtract! 20 - 7.45
186,000 in scientific notation is:
1.86 x 10^5
When writing in scientific notation, the first number is any number less than 10. For the exponent, it is however many places the decimal point has been moved over. If it is positive, the number is large, you move the decimal over to the right. If it is negative, the number is smaller, you move the decimal over to the left.
In 186,000, you use 1.86 since it is less than 10. Now, you count however many places the decimal has been moved over from this number to make 186,000. In this case, it is 5 places, so that is the exponent.
Answer:
True
Step-by-step explanation:
Ex. 0.0100 * 100 = 001.00
C I guess sorry if I get you a low score
Answer:
The interest rate was of 5.5% a year.
Step-by-step explanation:
The compound interest formula is given by:
Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per unit year and t is the time in years for which the money is invested or borrowed.
In this question, we have that:
We have to find r.
Taking the square root from both sides to isolate r.
The interest rate was of 5.5% a year.