rr

Most popular questions and responses by rr
1. Physics

The speed time graph shows the motion of a car over a period of 40 seconds. a. describe the motion of the car between: 1.) O and A - The car is traveling at constant speed from 0 to 20 m/s. 2.) A and B - The car is at rest for 20 seconds. 3.) B and C - The

2. Physics

The speed time graph shows the motion of a car over a period of 40 seconds. a. describe the motion of the car between: 1.) O and A - The car is traveling at constant speed from 0 to 20 m/s. 2.) A and B - The car is at rest for 20 seconds. 3.) B and C - The

3. algebra

how to convert 0.000037 to scientific notation

4. algebra

The product of the page numbers on two facing pages of a book is 110. Find the page numbers. the page numbers are:

5. la sallle

There are 3 consecutive even integers such that the quotient obtained by dividing twice the largest integer by the smallest integer is three less than three-fifths of the second integer. What are the integers?

6. Science

The living component of xylem tissue? A. Xylem parenchyma B. Xylem tracheid C. Xylem vessel D. Xylem fibre

7. Physics

The distance time graph shows a cart moving at a straight path. a. Describe the speed of the cart between: 1.) A and B - The cart is moving with constant speed for 10 seconds and it is now at rest for 20 seconds. 2.) B and C - The cart at rest for 20

8. algebra

It takes 4hr for 8 cooks to prepare food for a wedding rehearsal dinner. How long will it take 7 cooks to prepare the dinner.

9. algebra.

A rectangular is six times as long as it is wide. If the area is 54 ft^2, find the length and the width of the table.

10. food

at a cocktail party, you can expect the average person to eat how many hors d'oeurves in two and a half hours?

11. algebra

19cm^3 of a normal specimen of human blood contains 1.2 of hemoglobin. How many grams does 17cm^3 of the same blood contain?

12. algebra

plz solve factor trinomial a^2+10a+16

13. algebra

A launched rocket has an altitude, in meters,give n by the polynomial h+vt-4.9t^2, where h is the height, in meters, from which the rocket is airborne. If a rocket is launched from the top of the tower 90 meters high with an initial upward speed of 50

14. Science

Silicon is widely than germanium.why? Give scientific reason

15. Geometry

Trying to find the scale for a 77 centimeter by 53 centimeter painting to fit on a 8.5 by 11 inch paper. Please show me how-

16. math

A number increased by 2/5 of it becomes 210. what is the number?

17. algebra

Suppose a market research company finds that at a price of p=\$25,they would sell x=56 tiles each month. If they lower the price to p=\$20, then more people would purchase the tile, and they can expect to sell x=66 tiles in a month's time. Find the equation

18. algebra

factor trinomial w^2-15w+56

19. algebra

collect like terms and then arrange in descending order. 8x^5 - 7x^9-7x^5+ 8x^9

20. Science

Which is the earliest form of human fossil? A.neanderthel man B.homo habilies C.dryopithecus

21. Math

One-third of Derick's age two years ago is equal to a quarter of his age four years from now. How old is he now? Please provide the following: -Representation -Equation -Solution -Answer -Checking

22. algebra

A black racer snake travels 29.9KM in 13 hours. What is the speed in KM/h?

23. algebra

help; factor with wrong answer s^2+10s+25

24. algebra

There are n teams in a league and the number of games played is given by the polynomial n^2-n=N. A women's softball league has 12 teams. What is the total number of games to be played?

25. math

The mass of Mars is about 421x10^20 metric tons. The mass of the sun is about 1.998x10^27 metric tons. About how many times the mass of Mars is the sun? Give answer in scientific notation. The mass of the sun is about....times the mass of mars.

26. Science

What are the steps of evolution of star and sun like star? What's difference

27. calculus

how to find surface area of a cylinder with respect to r(radius) and h(height)?

28. math

The perimeter of a square is 9. what is the area?

29. algebra

The number N of aluminum cans used each year varies directly as the number of people P using the cans. If 54 people use 19,926 cans in one year, how many cans ae used in a city which has a population of 1,485,000

31. algebra

please solve 5u^8v-6uv^5+6u^8v-5uv^5 collect like terms

1. Math

7 5

posted on June 17, 2019
2. Science

As a semiconductor?

posted on March 31, 2018
3. chem

6 minutes and 12 seconds!

posted on September 9, 2015
4. math

37

posted on April 23, 2015
5. physics

Convert the velocity (80m/s) to accleration using Vf^2= Vi^2 + 2ad. After you find your accleration substitue that accleration value into Fnet = ma.

posted on April 23, 2015
6. physics

If the system is set in motion with m2 moving downward, what will be the acceleration of the system?

posted on March 23, 2015
7. math

20x(2) + 45x = \$510 40x + 45x =\$510 85x / 85 = \$510/85 x = 6 She sold twice as many small than large. So, small = 2(6) which equals 12 20(12) + 45(6) = \$510 240 + 270 = \$510

posted on July 9, 2014
8. Chemistry

A sample of ammonia liberates 5.66 kJ of heat as it solidifies at its melting point

posted on May 14, 2014