Harry reads that a particular element has an atom with a mass of 0. 000000000012 grams. What is the weight of the atom expressed in scientific notation? A. 1. 2 × 10-9 grams B. 1. 2 × 10-11 grams C. 1. 2 × 1011 grams D. 1. 2 × 1012 grams.

sorry can't

step-by-step explanation:

i googled though and something came up but it was in science langueage not common english sooo

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

to find the total number of combinations, multiply the quantity of each item by each other:

2 pairs of shoes x 3 pairs of shorts = 6 different combinations.

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of