Express the mass of the atoms and molecules in both standard notation and scientific notation. If necessary, round the numbers so the first factor goes only to the hundredths place. • one iron atom one water molecule • one silver atom one gold atom one platinum atom . one uranium atom​

∠1 and ∠2 are complementary. ∠1=x°∠2=(3x+30)° select from the drop down menu to correctly answer the question. what is the value of x? . a.15 b.25 c.30 d.40 e.55

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

Aline has a slope of and a y-intercept of –2. what is the x-intercept of the line?