A pentavalent cation atom has 20 and 15 neutrons as protons. Find the electron quantity and mass number respectively. (40 pts.) a) 20 and 15 b) 15 and 20 c) 15 and 35 d) 35 and 15 e) 10 and 20

A scooter runs 40 km using 1 litre of petrol tje distance covered by it using 15/4 litres of petrol is A biologist is studying how green sea turtles choose where to lay their eggs. She makes a hypothesis that because this species is related to other sea turtles through common ancestry, they probably all use the same process. This biologist formed her hypothesis using:________a. A hunch b. The unifying theory of evolution c. Experimentation d. The scientific method e. Observations of green sea turtles' behavior A company rounds its losses to the nearest dollar. The error on each loss is independently and uniformly distributed on [0.5, 0.5]. If the company rounds 2000 such claims, find the 95th percentile for the sum of the rounding errors. One topic of a story is innocence.Which statements are universal themes associated with this topic? Select three options.When the boy saw the effects of war, he no longer Viewed life as innocent.The path from innocence to experience can be long and difficult.One way to define innocence is as a lack of worldly experience or sophistication.The loss of innocence is a result of gaining experience and making mistakes.Protecting the innocence of others prevents them from taking risks in their lives. A toy falls from a window 80 feet above the ground. How long does it take the toy to hit the ground? You want to install a 1 1 yd wide walk around a circular swimming pool. The diameter of the pool is 23 yd. What is the area of the walk? Use 3.14 for pi . The mean and standard deviation of a random sample of n measurements are equal to 34.5 and 3.4, respectively.A. Find a 95 % confidence interval for if n=49.B. Find a 95% confidence interval for if n=196.C. Find the widths of the confidence intervals found in parts a and b.D. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed?1. Quadrupling the sample size while holding the confidence coefficient fixed decreases the width of the confidence interval by a factor of 4.2. Quadrupling the sample size while holding the confidence coefficient fixed increases the width of the confidence interval by a factor of 2.3. Quadrupling the sample size while holding the confidence coefficient fixed increases the width of the on confidence interval by a factor of 4.4. Quadrupling the sample size while holding the confidence coefficient fixed does not affect the width of the confidence interval.5. Quadrupling the sample size while holding the confidence coefficient fixed decreases the width of the confidence interval by a factor of 2. La camarera ________ la carta de bebidas en la mesa y pregunta a Federico y a m. Primero, yo quiero caf. Segundo, ________ Federico; l quiere agua. cuida; me toca a deposita; le toca a bebe; me levanta recoge; le levanta I think it is B but im not sure Explain the concept of "charge" and how it relates to electricity? Please help I will mark brainliest for correct answers! simplifica: 49/90, se puede???? What does President Lincoln express in the line in bold?A.AngerB.CertaintyC.DoubtD.Misery In the last stanza rain in summer, what is being compared with the leopards tawny hide? how to find the angel in trigonometry when all the lengths of the right angled triangle already given. The volume of a gas in a container varies inversely with the pressure on the gas. A container of helium has a volume of 370in3 under a pressure of 15psi (pounds per square inch). Write the equation that relates the volume, V, to the pressure, P. What would be the volume of this gas if the pressure was increased to 25psi? I need a paragraph on why classical music is better than modern! I need it for a debate! Before this wednesday! "The correct syntax for passing an array as an argument to a method when a method is called and an array is passed to it is: " Type the correct word in the boxes below. my your his her its our their 1. The boy likes________________ school. 2. Mary sees __________ mother every day. 3. My teachers bring___________ children to our place on Saturdays. 4. The cat eats _____________ food quickly. 5. I often forget _____________ key. 6. You write in __________book in class. 7. We bring ____________pencils to class. 8. The men always bring ______________wives to the party. 9. Mr Adams teaches_______________ class in the morning. 10. She likes to give presents to ___________________grandchildren. 11.They never do _______________homework. 12.Ali sometimes wear ____________green t-shirt. 13.We love ________________school. 14.Ayse and Ahmet play with __________________ sisters. 15.You always wear ______________uniform at school. Which expression is equivalent to In a game the average score was 60 time score was 5/2 of the average what was Tims score?