Questions Asked onJuly 27, 2019

1. math, probability

Problem 1. Determining the type of a lightbulb. The lifetime of a type-A bulb is exponentially distributed with parameter 𝜆 . The lifetime of a type-B bulb is exponentially distributed with parameter 𝜇 , where 𝜇>𝜆>0 . You have a box full of

2. English

Write an essay on Nigeria my country

3. ASVAB Arithmetic

In Tim's last 5 games here's the number of three-point field goals scored per game. 9 6 0 9 3 How many three-point field goals would Tim have to kick in the next game to bring his average (arithmetic mean) to six points per game? I just need to be walked

4. Math

Thrice my number minus 6 is equal 66.What is my number ?

5. Trigonometry

A boat sails due north from the port 70 km, then 30 km east and then 60 km north. How far is the boat from port?

6. science

an aluminium cube has a volume of 800cm 3^. If it is total immersed in water, calculate the upthrust acting on it

7. mathematics

prove that sin x/10 + sin 13x/10 =-1/2

asked by begha terkula
8. Math

Differentiate x^2+y^3=27xy

9. math

an urn contains 40 red chips and sixty white chips. six chips are drawn out and discarded, and a seventh is drawn. what is the probability that the seventh chip is red?

10. physics

A heat transfer of 9.0*105J is required convert a block of ice at 20C to water at 15C. What was the mass of the block of ice?

11. Trigonometry

cos2β if sinβ = 4/5 and β is in the first quadrant Im having a hard time undersatanding this.

12. Math

A children park 350 m long and 200 m wide its is surrounded by a path way of uniform width.supposed the total area of the park and the pathway is 74,464m squered.how wide is the pathway?

13. Maths

factorise the following (1). 5ax - 5bx - a+b (2). m2 - n2 - mq - nq?

14. Maths

r=.10,m=1.6*10^-27,f=2.5*10^-12, use formula f=mrww,calculate w?

asked by Abhishek Sharma
15. chemistry

A voltaic cell consists of a standard hydrogen electrode in one half-cell and a Cu/Cu2+ half-cell. Calculate [Cu2+] when E cell is 0.22 V.

16. Math

Two squares are enclosed in a large square as shown. The area of the smallest square is 5cm^2, and the area of the middle square is 20cm^. Determine the area and perimeter of the shaded region.

17. Physics

A conductor has a diameter of 1.00mm and length 2.00m.if the resistance of the material is 0.1 ohms,it's resistivity is A.3.93 ×10^-6 B.2.55 ×10^2 C.3.93 ×10^-8 D.2.25×10^2?

18. Trigonometry

tan2θ if tanθ = 5 I really having a hard time understanding this.

19. physics

a cube of side of 10cm and mass 0.5kg floats in a liquid without only 0.2 of its height above the liquid surface. what is the relative density of the liquid.

20. Math

Solve the following l.p.p using simplex method Maximum z=10x+20y Subject to 3x+5y

21. English

Instructions You read expensively ahead a health lifestyle in the short course you attended write the instructions to be followed by your community to Benefict from practicing a healthy lifestyle

asked by Linah Linah
22. art and design

2 paragraph discussion post on hybridity, diversification, and transnational/diasporic cultures

23. maths

Ade was 4 times as old as his son 8 years ago. Ade will be twice as old as his son in 8 years time. What are their present ages?

24. Electromagnetism

A toroid is a solenoid in the shape of a donut. The magnetic field inside the toroid is B=μ0NI/(2πR). Suppose that a toroidal electromagnet with 146 loops uses a coil 1.2 m in diameter made from square copper wire. The power supply produces 120 V at a