In order for an atom to have a zero charge every proton which has a charge if + 1 must be matched with an electron which have a charge of - 1 a helium atom has 2 protons and 2 electrons explain why a helium atom has a zero charge

Ruby is visiting San francisco. From her hotel she walks 1 block east and 3 blocks south to a coffee shop. Then she walks 7 blocks west and 5 blocks south to a museum. Where is the museum in relation to her hotel?

Racheal types 85 words each minute. She has typed 1 000 000 words. If she types for 6 hours each day, for how many days has she typed.

Given a population of class sizes at a university in an academic year , indicate what the sampling distribution for samples of 30 would consist of. Choose the correct answer below. A.

7 Simplify the following expression. 7 (6y + 6z) - 42z A. 13y B. 13y - 84z C. 42y D. 42y - 48z Reset Submit Algebraic ExpressionsToolsSave Session Questions:0 of 10 Answered 12345678910 Answered Current Unanswered 6 of 10 AnsweredSession Timer:

Calculate the number of integers divisible by 4 between 50 and 500, inclusive.

Jacob is comparing the price of two different brand of water bottle. The first brand cost $30 for a case of 24 bottle and the second brand cost $39.60 for a case of 36 bottle. Which brand has the lower unit cost per bottle?

Which of the following sets of measurements is the MOST precise? OA) 1 m, 2 m, 3 m, 4 m OB) 2.9 m, 3.0 m, 3.1 m, 3.2 m OC) 10 m, 20 m, 30 m, 40 m OD 100 m 200 m 300 m 400 m

What does x equal to 35 - 2x > - 5

Solve the inequality and then graph its solution: 7s + 12 > 46 - 10s

Samantha, each year, reads 5 books during her 8 week break. How many books does she read each week?