# Benjamin

Questions and answers by visitors named Benjamin

## Questions

1. ### What does the phrase author's purpose describe?

A. a thesis statement that makes a claim B. the reason an author writes a text C. the evidence an author gives to support his or her claim D. the way an author feels about the topic of the text

7. ### Gretchen is setting up for a banquet. She has 300 chairs and needs to distribute them evenly among t tables.

How many chairs should she put at each table? Write your answer as an expression.

9. ### A ball throw with a speed of 100ms-1 attain height of 150m(takeg = 98 mg-2)calculate the following

(a)time of flight (b)angle of projection (c)range

21. ### In a class of 160 students, who took science and math examination. If they passed at least one subject and twice as many passed in science as math and 76 passed in both subject.

Find how many passed in math only Illustrate your answer in a Venn diagram

24. ### Ben has b dollars. Cam has 7 fewer dollars than Ben.

How many dollars does Cam have?

26. ### Complete the statement to describe the expression abc + defabc+defa, b, c, plus, d, e, f.

The expression consists of terms, and each term contains factors.

27. ### A girl throws a marshmallow that lands in her friend’s mouth 2 m away. The girl threw the

marshmallow at an angle of 30 degrees. How hard did she throw the marshmallow?

28. ### A tennis ball is dropped from 1.98 m above

the ground. It rebounds to a height of 1.05 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s2 . (Let down be negative.) Answer in units of m/s Confused please help.

12cm,40

32. ### An 0.850 g sample of a mixture of LiH and CaH2 was reacted with H2O and the H2 gas produced, 1.20 L, was collected at STP.

What mass % of the original mixture was LiH?

33. ### A sociology professor assigns letter grades on a test according to the following scheme.

A: Top 14% of scores B: scores below the top 14% and above the bottom 55% C: scores below the top 45% and above the bottom 17% D: scores below the top 83% and above the

36. ### In this reaction:

2 HCl + Na2CO3 -> H2O + CO2 + 2 NaCl The HCl was diluted from 2M to 0.8M and I currently have 0.020 L of it. There is also Na2CO3. What would be four causes for a large error percentage? Is it possible that some of the HCl evaporated?

37. ### For the reaction of 2 HCl + Na2CO3 -> H2O + CO2 + 2 NaCl, how can I visually identify the limiting reagent, without any calculations?

If I have a very high percent yield, what would be a good reason for it, considering that the HCl was diluted to 0.050 L at

48. ### 1.

If the energy of a photon is 1.32 × 10^-18 J, what is its wavelength in nm? 2. The energy of an electron in the hydrogen atom is determined by what?

59. ### There is a table of values for the function f. They read:

x=3, f(x)=4 x=4 f(x)=5 x=5 f(x)=6 x=6 f(x)=3 x=7 f(x)=5 x=8 f(x)=7 What is the value of 2f(5)-f(4)? I did this wrong obviously, but what I did was figure out the function of five from the table (4),

60. ### In North American, female adult heights are approximately normal with a mean of 65 inches and a standard deviation of 3.5 inches.

a.) If one female is selected at Random, what is the probablility that shes has a height 70 inches or higher? b.) The heights

63. ### About the French Revolution.

You are a member of the Third Estate. Prepare a speech for the meeting of the Estates General, explaining all your problems. Minimum 300 words

64. ### Hello,

I need to come up with a very creative way to express who I am to a certain group of people. Unfortunately, I'm not very good at art, so I would have to come up with a new way. Are there any ideas you might have? Thank you very much for your help.