Can anyone help me with those 2 exercises? Please I really need help.

4 boys weighed themselves in different pairs and alone. The weights of the pairs were 110kg, 112 kg, 113kg, 118kg, 121 kg, and the weight of one pair was lost. The total weight of the 4 boys was 230kg. What was the lost weight? (-5+2)(-1/2)I dont know how to do this problem. Would anyone be able to assist? Thanks! The heavy snowfall isolated the cottage.Phrase or Clause? what did Mary Stuart do with their lifetime? you would like to volunteer at the heart to heart charity office. write a formal letter of about 150 words applying for the job 1.6x 2.88 = 3.4x X=????? SummaryIn the excerpt from Walden, Henry David Thoreau recounts several places he considered living beforesettling on Walden Pond, where he has decided to "live free and uncommitted." Thoreau considers hiscabin, though incomplete, to be a paradise in which he is free of time and social constraints. After livingthere for several seasons, Thoreau decides to leave Walden, having realized that he has other lives tolive.Quickwrite:Why might a person live alone and away from the world? What are the advantages or disadvantages ofthis choice? How would you "live simply" if you so desired? Explain.I Jessica has known she wanted to be a teacher since she was in elementary school. She is an avid reader and expects to be an excellent literature teacher. As a junior at the university, she believes her content knowledge is the only important aspect of teaching she needs to develop and the only teacher characteristic that matters. On the basis of Pianta Os work, what does Jessica need to learn about the affective dimension of teaching? What affect doest written history have on an culture Please help me! Thanks in advance 1.Explain why there are arid (dry) areas on the Earth's surface. (4 marks) Which of the following correctly compares gravitational force and distance between two objects?A. As the distance increases, the gravitational force decreases.B. As the distance decreases, the gravitational force decreases.C. There is no relationship between gravitational force and distance between two objects.D. As the distance increases, the gravitational force increases.Help pls It costs $7 each way to travel to work each weekday by train. What is the weekly expense each way? Which of these angle pairs are congruent because they are correspondingangles?A. 2 and 4B. 2 and 3C. 2 and 5D. 2 and 6SUBMIT what are the behavioral sciences ? Elizabeth wants to buy her mother a pair of pearl earrings for Mothers Day. The earrings cost $50. The sales tax rate is 7.5%. What is the total amount Elizabeth will have to pay to purchase this gift? Carmen buys 153 shares of Cawh Consolidated Banks, each of which pays a constant yearly dividend of $7. 14. After six years, how much has Carmen received in dividends? a. $5,783. 40 b. $1,820. 70 c. $1,092. 42 d. $6,554. 52. A cyclist rode at an average speed of 15 mph for 30 miles. How long was the ride? 0. 5 hours 1 hour 2 hours 3 hours. Problem Elizabeth I faced outside her country PLEASE HELP NUMBER 3 ASAP ILL GIVE BRAINLIEST THANKS