How do know how many protons are in a atom

Kyle has to make a decision about his health insurance. Under one plan, the monthly cost of insurance is $15, but if he visits a doctor, he has to pay $50 for an office visit. Kyle estimates that he has a 0.

you borrow $90 form your grandmother. you pay back $15 each week. Write an equation in standard form that represents the amount owed y after x weeks

A teacher divides the students into three groups for project. Each group has the same number of students. Is the total number of students prime or composite? Explain period

5y-2y+7y=? what is the answer

A right triangle has legs 48 inches and 55 inches long. What is the length of the hypotenuse in inches?

What is the slope of the line passing through (1, 2) and (3, 8) ? slope = 1/7 slope = 1/3 slope = 3 slope = 7

Members of a car sharing program pay a fee of $50 per month plus$ 7.65 for every hours they use a car. a member bill was$ 149.45 last month. how many hours did the customers use a car last month?

A rectangular shaped desk has a length of 25 inches and a width of 18 inches. A desk with a similar shape has a length of 60 inches. What is the width of this desk?

Describe the difference between 33 1/3 and 33%

How many reading questions do i need to get correct to go up from a 620 to a 700?