1. history

What was the significance of the Gothic Line? a It was a line of convoy trucks that supplied the Allies as they attempted to take Italy from Axis control. b It was a set of fortifications in Italy that gave the Allies the upper hand when they broke through

2. math

An airline with two types of airplanes, P1 and P2, has contracted with a tour group to provide transportation for a minimum of 400 first class, 900 tourist class, and 1500 economy class passengers. For a certain trip, airplane P1 costs \$10,000 to operate

3. Algebra

Michael's bank contains only nickels, dimes, and quarters. There are 63 coins in all, valued at \$5.50. The number of nickels is 5 short of being three times the sum of the number of dimes and quarters together. How many dimes are in the bank?

4. history

Which identifies the term for the genocide of more than 6 million Jews by the Nazi Regime during World War I? the Holocaust Nanking Massacre the Killing Jewish Massacre is it A?

5. math

The ratio of guppies to angelfish in a shop was 2:3. The number of angelfish was 2/3 the number of goldfish. The shopkeeper decided to replace 1/4 of the guppies with some angelfish. The number of angelfish she added was equal to the number of guppies she

6. math

Anne and Nancy use a metal alloy that is 20.45% copper to make jewelry. How many ounces of a 12% alloy must be mixed with a 25% alloy to form 100 ounces of the desired alloy?

7. Algebra

The prices of the systems are: \$1200 for System 1, \$1500 for System 2, \$1600 for System 3, and \$1800 for System 4. Write the information from the table as a 4 x 3 matrix B. Write a row matrix A for which the entries represent the prices for the systems. If

8. Science

The magnitude of the electrostatic force between two identical ions that are separated by a distance of 5.0A is 3.7×10^-9N. a) what is the charge of each ion? b) how many electrons are missing from each ion( thus giving the ion its charge imbalance)?

9. Algebra

A \$148,000 trust is to be invested in bonds paying 7%, CDs paying 6%, and mortgages paying 8%. The bond and CD investment must equal the mortgage investment. To earn a \$10,860 annual income from the investments, how much should the bank invest in bonds?

10. chemistry

Indicate what type of compound (ionic or covalent) would be expected from the possible binary combinations of the following elements: O, F, Cs, CI, Na. Consider the elements ' negativity

11. chemistry

Calculate the volume of hydrogen gas from the C4H9O3N compound, under temperature or pressure conditions (STP).

12. psychology

Which of the following is a negative consequence that is occurring because Amy constantly uses her smartphone? (Select all that apply.) She is losing sleep. She isn't paying attention in her classes. She isn't doing her homework. She is feeling more

13. psychology

True or False No reputable psychologist takes seriously any irrational phenomena such as ESP or hypnosis. False?

14. psychology

Why must the study of behavior be systematic? It reduces the chance of coming to false conclusions. It takes less effort. It allows multiple behaviors to be studied at the same time. The study of behavior does not have to be systematic. D?

15. Math

The half-life of radon-222 is 3.8 days. How much of a 300 gram sample is left after 14.8 days?

16. world history

What impact did the collapse of the Soviet Union have on the end of segregation in South Africa? a- The decline of the Soviet Union allowed for the United Nations to intervene in the segregation policies of the South African government. b-The decline of

17. Math

The diameter of a circle is equal to the side of a square. The ratio of the area of the circle to the area of the square is approximately A. pi/2 B. 2/pi C. 2/1 D. 11/14

18. math

A plane makes a 240-mile trip against a head wind in 1 hour and 30 minutes and returns, with a tail wind of the same speed, in 1 hour. What is the speed of the wind? A) 80 mph B) 200 mph C) 40 mph D) 160 mph

19. Mathematics

The common difference of an arithmetic sequence is d prove that the sum of first n terms and next n terms differ by n×n×d

20. MATH

How does .08/(.08+.92(2/23)^t/4) become 2/(2+23(2/23)^t/4)? I don't understand how .08 becomes 2 and .92 becomes 23.

21. Science

What is the valency of E from E2(O3).

22. Science

Write the valency of E from EO3.

23. Algebra

You just purchased a painting for \$1500 as an investment and it is suppose to appreciate in value at a rate of 3.65% each year. What will it be worth in 25 years?

24. Algebra

find the numbers of this geometric sequence: 8, __ , __, __, 648

25. chemistry

The mixture of 40 ml of water to 160 ml of solution with ph = 8, causes a change in the ph value. What is the value of the new PH. Use Log 2 = 0.3

26. Algebra

Fraction Review Rewrite each improper fraction as a mixed number or whole number: 1. 5/4= 2. 7/5= 3. 4/4=

27. chemistry

How many electrons contain the ion that has 13 protons 10 electrons and 15 neutrons?

28. Chemistry

If 35.00 mL of 0.25 M NaOH(aq) is mixed w/ 20.00 mL of 0.400 M HClO4(aq), the result solution would be: So apparently the correct answer is BASIC, but I thought it would be neutral because the resulting solution would contain NaClO4 which has components of

29. computer science

In a database system,within a banking system application,transaction between A is transferring 1000 from Acc1 to account Acc2 at the same time,transaction B is processing every records and adding interest payment by increasing each balance by 1.5 percent

30. Algebra

How much would you need to invest to get \$30,000 in 10 years for an account offering 2.54% interest?

31. Algebra

You invest \$5,500 into a 4.5% one-year CD. Find the balance of the account after five years if it's compounded: a. Quarterly Equation:______________________ Balance: \$_________________ b. Annually Equation:______________________ Balance: \$_________________

32. Algebra

Since populations are continuously changing based on their immediate previous state, the Pert formula can be used to quickly estimate near future growth (or decay). Assume that the 1990 census for a city of 800,000 reveals an annual increase of 2.3%,

33. math

Show that the surface area of a sphere is two thirds of the total surface area of any cylinder circumscribed around the sphere (the sphere therefore touches both bases of the cylinder as well as its lateral surface).

34. history

When the stock market crashed in 1929, it had a ripple effect that impacted European nations, among others. In what specific way were European economies tied to the US economy? a.They all adhered to the gold standard. b.All were awaiting repayment by

35. Chemistry

What would the pH of the solution be if the salt NaHX is dissolved in water? What anion predominates at the first equivalence point of the titration of X^2- with H^+?

36. math

A \$76,000 trust is to be invested in bonds paying 8%, CDs paying 7%, and mortgages paying 10%. The bond and CD investment must equal the mortgage investment. To earn a \$6670 annual income from the investments, how much should the bank invest in bonds? A)

37. Physics

A uniform horizontal beam 300N 5m long is suspended vertical from its two end by a rope, if a 600N person stands in 1.5m from its left end find the tension in each end of the rope.

38. Science

When H2SO4(aq) is exactly neutralised by Mg(OH)2, the hydroxide ion concentration in the resulting solution will be ?

39. Algebra

Provide an appropriate response. Suppose that A and B are two matrices such that A + B, A - B, and AB all exist. What can you conclude about the dimensions of A and B? A) A is a row matrix and B is a column matrix. B) A and B have the same dimension, but

40. Algebra

Perform the matrix operation. Given A = [-1 2] and B = [1 0] , find 2A + 3B.