# Questions Asked onJune 28, 2020

1. ## PreCalculus

Convert 2 e^{\pi i/6} to rectangular form.

2. ## Math

Cards marked with the numbers 2 to 101 are placed in a box and mixed thoroughly. One card is drawn from this box. Find the probability of a number which is a perfect cube.

3. ## Mathematics

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 Scientific Notation

4. ## Mathematics

A girl walks 800meters on a bearing of 129degrees calculate how far east and south is from her starting point

5. ## Mathematics

Given that 99=100 -1,calculate the value of 152 x 99.

6. ## Mathematics

How many days, hours & minutes between 06/29/1947 @ 02:15 a.m. until 08/10/1977 @ 02:15 A.M.

7. ## Science

sound travels through cold air at about 1190 kilometers per hour. that means that a sound can travel the length of three football fields in about a second. Some machines, such as jet planes, can travel faster than sound. the world's fastest train can

8. ## chemistry

a technician went to the laboratory to prepare a solution of 250.0 mL of calcium carbonate (Na2CO3). It was weighed on the analytical balance 1.3316g of the solid calcium carbonate reagent. Knowing that salt has 99.5 %m/m, calculate the %m/v of this

9. ## Mathematics

Given that 99=100-1,calculate the value of 152 x 99

10. ## mathematics

What is the product of 2p + q and –3q – 6p + 1? –12p2 – 6pq – 4p – 3q + 1 –12p2– 12pq + 2p – 3q2 + q –9p2q2 + 12pq – 2p + q 12p2 + 12pq +2p + 3q2 + q

11. ## Calculus

How do I differentiate fx and fy f(x,y)=√(1+x^2 +y^2)

12. ## science

Mendel performed his experiments on more characteristics than the four shown in the Mendel’s Results table. Why was it important for him to look at more than one characteristic?

13. ## Mathematics

Find the measurements of the diagonal indicated in the following parallelogram If DL = 7, then DF = ? Use the information to find the given length of the diagonal EFGH and EH = 24 then FG = 12

14. ## Mathematics

What value of x will give the minimum value for 9x^2 + 18x + 7?

15. ## Math

3) Find the value of m for which (i) (5^m×5^3×5^(-2))/5^(-5) =5^12 (ii) (2/9)^3×(2/9)^(-6)=(2/9)^(2m-1)

16. ## mathematics

A farmer owns a field with an area of 0.77 km2. The farmer buys another field with an area of 33,400 m2. What is the total area of the fields he now owns in km2?

17. ## Math

4) Simplify : (i) (125 ×x^(-3))/(5^(-3)×25 ×x^(-6) ) (ii) (16×10^2×64)/(2^4×4^2 )

18. ## Mathematics

How many 10 digit numbers can be formed using only the digits 2 and 5?

19. ## History

European nations colonized countries on the African continent to:

20. ## Mathematics

A three digit number is such that twice the hundreds digit is more the teens digit by two.The unit digit is thrice the hundreds digit.When the digits are reversed the number is increased by 594.Find the number ?

21. ## geography

Birth and death certificates are an example of what?

22. ## Mathematics

Calculate the volume of a cylindrical steel bar which is 8cm long and 3.5cm in diameter

23. ## chemistry

What are the saturated alcohols that have the general molecular formula?CvH2v+1O com v>1 Cvh2v+2O com v>1 CvH2vO com v>1 CvH2vO com v>3

24. ## Physics

If stone is thrown directly down ward from the top of a 40m tall building with an initial speed of 10m/s,what will be the speed of the stone,when it reach the ground?g 10N/kg

25. ## mathematics

Does anybody know how to plot these function on mathematica y = sinx and y = sinx/x on the interval [-2Pi ,2Pi ]?