# Questions Asked onJune 30, 2020

1. ## Math

Find the number: 112/100 of which is 56

2. ## Mathematics

There are 5 teams in a basketball competition each team must play each of the other team once how many games will each team play

3. ## Geometry

Line segment AB with length a is divided by points P and Q into three line segments: AP , PQ, and QB , such that AP = 2PQ=2QB. Find: A)the distance between point A and the midpoints of the segments the segment QB B) the distance between the midpoints of

4. ## science

1) Read the scenario. A car starts 10 m north of a reference point. It moves at a constant velocity over the next 5 s, reaching a position of 10 m south of the reference point. What is the car’s average velocity? 0 m/s 4 m/s north 2 m/s south 4 m/s south

5. ## Math

If BC = 8 , AB = 24 , DC = 48 then BE equals ?

6. ## Physical Science

This is a velocity versus time graph of a car starting from rest. If the area under the line is 10 meters, what is the corresponding time interval? A. 2 seconds B. 4 seconds C. 5 seconds D. 10 seconds E. 15 seconds

7. ## science

Which of the following choices correctly describes the behavior of the sound wave as it moves from metal to air? The sound wave slows down and refracts. The wavelength and frequency decrease. The sound wave slows down and refracts. The frequency decreases,

8. ## Mathematics

If x^a * x^b = (x^a)^b, prove that a/b + b/a = -1. Best I can get is a/b + b/a = ab - 2. Is there any way to show ab = 1 or other way to approach the initial problem to find the proof?

9. ## math

A local pizza shop has 8 different toppings to pick from. How many ways can you pick three different toppings for your pizza if order does not matter?

10. ## math

A semi-circle sits on top of a rectangle to form the figure below. Find its area and perimeter. Use for 3.14. The rectangle is 4 inches long and 3 inches wide. The semi-circle sits on top of the rectangle on a side that is 4 inches long.

11. ## Math

The ratio of the measures of the angle of a triangle are 1:3:5. The measures of the largest degrees is? I need this like as soon as possible

12. ## Physics

1. How will the pressure vary if: a. force is doubled while keeping the area constant? b. force and area both are tripled? c. area is doubled while keeping the force constant?

13. ## chemistry

Calculate the number of moles of Na2CO3 present in 100cm^3 of 2 M Na2CO3 solution.i got 5 moles.am i right

14. ## Physical Science

A van traveling down a slope with a uniform acceleration of 2.15 meters/second^2 attains a speed of 20.00 meters/second after 7.00 seconds. What is the initial velocity of the van? A. 0.00 meters/second B. 3.65 meters/second C. 4.95 meters/second D. 35.05

15. ## english

Which excerpt from Robert Stawell Ball's Great Astronomers is best supported by this diagram? Excerpt 1 These movements were wholly incompatible with the supposition that the journeys of Venus were described by a single motion of the kind regarded as

16. ## math

What 2D figure would result if you sliced a right rectangular prism horizontally?

17. ## chemistry

Determine the number of sodium ions contained in 25cm^3 of 0.5M sodium carbonate solution.

18. ## math

give some examples of polynomial.

19. ## Science

a huge oil tanker, salt water has flooded an oil tank to a depth of h2 = 5,0 m. On top of the water is a layer of oil h1 deep, as in the cross-sectional view of the tank in Figure 1: Figure 1 The oil has a density of 700 kg/m3 . If P0 is the atmospheric

20. ## Calculus

Given a=1, b=3, and f(x)=x^2, apply the mean value theorem. My question is, what would f'(c) in this problem? How do I find it?

21. ## Mathematics

CRITICAL THINKING: Mercury's average distance from the sun is 57,910,000 km. The Earth is approximately 93,000,000 miles from the sun. What would be the distance of a trip from Mercury to Earth, via the Sun. Look out for the units!!! (1 km = 0.62 mi) .Use

22. ## Algebra

15. At Generic High School, in the year 2001, there were 20 students per every computer. In 2008, there were 4 students per computer. Write two ordered pairs to represent the ratio of student to computer. (Let x equal the number of years since 2000.) Let x

23. ## Math

In an office, there were 24 more females than males. 60% of the workers were females. How many workers are there in total?

24. ## Mathematics

Prove that 1-cosx/1+cosx=tan^2x/2

25. ## Math

4x³+2x²-3x+1/(2x+1)(x-3)

26. ## mathematics

a number is chosen at random from the interger 10 to 30 inclusive what is the probability that it is a multiple of 3, a multiple of 5, prime number , perfect square

27. ## math

A group of 10 students are on a field trip when their bus breaks down 40 miles away from the school. A teacher takes 5 of them back to school in her car, travelling at an average speed of 40 miles per hour. The other 5 students start walking towards school

28. ## Calculus

Prove that if a particle moves along a curve at constantspeed, then the velocity vector is at all times perpendicularto the acceleration vector.

29. ## Mathematics

Find m :- 1) (5^m×5^3×5^(-2))/5^(-5) =5^12

30. ## mathematics

Two business​ partners, Ellen and​ Bob, invested money in their business at a ratio of 5 to 8. Bob invested the greater amount. The total amount invested was ​\$260. How much did each partner​ invest?

31. ## Algebra

Factorise -a^6+8b^6+c^6+ 6a^2 b^2 c^2

32. ## Algebra

Factorise.(x+y)^3 +(2y+3z)^3+ (3z+4x)^3 -3(x+y)(2y+3z)(3z+4x)