# Les

Most popular questions and responses by Les
1. ## Math

Determine the projection of u = 1.6i + 3.3j in the v = -2.1i - 0.5j direction a. 0.8i +0.2j b. 2.3i = 0.5j c.-0.6i-1.3j d. -1.2i-1.1j

2. ## math

Find the angle between u=(8,-3) and V=(-3,-8). Round to the nearest tenth of a degree

3. ## statistics

One of nature's patterns connects the percent of adult birds in a colony that return from the previous year and the number of new adults that join the colony. Following are data for 13 colonies of sparrowhawks: Percent return 73 61 79 54 75 62 53 46 57 50

If a car is accelerating downhill under a net force of 3674, what additional force would cause the car to have a constant velocity?

5. ## Graphs

The graph of y = f(x) is shown below. Assume the domain of f is [-4,4] and that the vertical spacing of grid lines is the same as the horizontal spacing of grid lines. The points (a,4) and (b,-4) are on the graph of y = f(2x) Find a and b.

6. ## Science

A 15kg tuna fish moving horizontally to the right at 5m/s swallows a 2kg fish that is swimming to the left at 7.5 m/s .What is the speed of the tuna fish immediately after,if the force exerted on the fish by the water can be neglected?

7. ## trigonometry

An airplane flying at an altitude of 5100 ft is 12000 feet from an airport. what is the angle of elevation of the plane? I don't know how to start the problem.

8. ## chemistry

Compute the freezing point of this solution: 25.5 g C7H11NO7S (4-nitro-2-toluenesulfoinoic acid dihydrate) in 100 g H2O. (nonionizing solute)

9. ## science

Please unscramble acronoc,glataroil, frete, estoroit, whockudoc. http://wordsmith.org/anagram/

Why do you think the earth's crust is thicker under land than under bodies of water?

11. ## Chemistry

What is the total ionic and net ionic equation for this aqueous reaction?: Sr(OH)2(aq) + HClO2 (aq) -I wrote the molecular as: Sr(OH)2 (aq) + HClO2 (aq) ---> SrClO2 (aq) + H20 (l) -Is the Total Ionic: Sr2+ (aq) + 2OH- (aq) + H+ (aq) + 2ClO- (aq) ---> Sr2+

12. ## Math

Deternmine the volume of a cylinder with a radius of 5cm and a height of 30cm. How long would it take it to fill this cylinder with water if you were using a fountain with a flow rate of 2400 mL/min? 1cm^3=1mL

13. ## Algebra

Find an equation of an ellipse satisfying the given conditions: ​Foci: ​(−2​,0) and (2​,​0) Length of major​ axis: 8 Thank you

14. ## geometery

a worker walked 8ft. upa ramp and was 3ft. above ground level. If he walkes an additional 12ft. up the ramp,how many ft. will he be from the ground?

15. ## math

how to convert 4.50 cubic feet to milliliters

why the climate in the appalachian mountains would be warmer the the rocky mountains

17. ## Chemistry

How many aluminum atoms are there in 15.0mg of Al2O3?

18. ## math

Find the constant c that makes the quadratic x^2 + 7x + c the square of a binomial.

19. ## trig

determine the period of y = tan 2x

20. ## English

Consider the sentence: Jim wore a red jacket and hat. Does the adjective red apply to both the jacket and the hat? In my opinion it does but it lacks clarity. Is there a reference anywhere to support either side of this argument? There are strong pros and

21. ## Math

Find the smallest value of x such that x^2+6x + 9 = 24.

22. ## 6th grade language arts

What is a mood/tone map?

1. ## Math

A B C B

posted on March 2, 2017
2. ## English

Yes

posted on December 14, 2016
3. ## Chemistry

Thank you bobpursley!!!

posted on December 12, 2016
4. ## Math

104

posted on October 11, 2016
5. ## Anthropology

b

posted on April 12, 2016
6. ## 7th grade Math quick help Ms. Sue

seriously guys? i go to connections too and we all need help sometimes just calm down

posted on September 25, 2015
7. ## religion

Speaking as a westerner who is studying Buddhism, as a mode of living not necessarily a religion, I also find myself wondering whether or not there was only one Buddha. This question occurred to my while reading "Alone with Others an Existential Approach

posted on March 20, 2009