Evaluate −2(2/5)^10x for x=15.
Enter your answer as a fraction in simplest form in the box.

An an average person has 6×10 by the power of two as many red blood cells as white blood cells a small sample of the blood has 7×10 by the power of three white blood cells about how many red blood cells are in the sample

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.