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Questions Asked on February 23, 2020

Compute 𝐄(𝑋) for the following random variable 𝑋:𝑋=Number of tosses until getting 4 (including the last toss) by
1. 0 answers
2. asked by jygsa
3. 6,982 views
Solid aluminum and gaseous oxygen react in a combination reaction to produce aluminum oxide: 4Al (s) + 3O2 (g) →→ 2Al2O3 (s)
1. 2 answers
2. asked by COR
3. 6,284 views
Suppose that 𝑛=2. What is the probability that person 1 takes seat 2?
1. 0 answers
2. asked by gilga
3. 4,719 views
1.Let 𝑋 and 𝑌 be two binomial random variables:a.If 𝑋 and 𝑌 are independent, then 𝑋+𝑌 is also a binomial
1. 2 answers
2. asked by Raven
3. 3,371 views
A block and tackle system of pulleys consisting of 4 pulleys is used to raise a load of 50N through a height of 20mIf the total
1. 2 answers
2. asked by Aishat
3. 2,584 views
The perimeter of a rectangle is 72 m.The base is 3 times the height. Find the area of the rectangle.
1. 2 answers
2. asked by Lucy
3. 1,919 views
What is the derivative of the fifth root of x^3?
1. 4 answers
2. asked by david
3. 1,794 views
A brass rod of 2m long at a certain temperature what is its length for temperature rise to 100K take (linear expansivity of
1. 2 answers
2. asked by Aliyos
3. 1,447 views
Find the expected value of the product of variables 𝐴 and 𝐵, denoted as 𝖪(𝐴𝐵), when 𝐴 and 𝐵 are independent
1. 0 answers
2. asked by jygsa
3. 1,214 views
From t = 0 to t = 3.72 min, a man stands still, and from t = 3.72 min to t = 7.44 min, he walks briskly in a straight line at a
1. 1 answer
2. asked by hur
3. 1,105 views
Caelin drives at 30 miles per hour.How many hours will it take him to drive 210 miles?
1. 4 answers
2. asked by Anonymous
3. 1,090 views
A train travels on a straight track passing signal A at 20m/s and reaches signal B 100m further than A.At B the velocity of the
1. 1 answer
2. asked by Angel
3. 999 views
A 226 g sample of brass at 105◦C is placed ina calorimeter cup that contains 283 g of water at 29◦C. If you disregard the
1. 1 answer
2. asked by Vienna
3. 976 views
which factors influenced the growth ofthe ranching industry? select all that apply. * American Indians were driven out of the
1. 1 answer
2. asked by idk
3. 884 views
When I take 4 times a certain number from 50 the remainder is 6. What is the number?
1. 3 answers
2. asked by Adam
3. 772 views
DO NOT STEAL MY ANSWERThe one of the sound devices in Full Fathom Five is alliteration. in the first line "Full fathom five thy
1. 1 answer
2. asked by Anonymous
3. 668 views
without using the tables, find the value of (2+√3)^6 +(2-√3)^6
1. 1 answer
2. asked by Mohammed
3. 666 views
In a certain examination 52 candidate offered biology 60 candidate offered history and 96 offered mathematics.if 21candidate
1. 2 answers
2. asked by Umar
3. 654 views
In our class 12 girls have short hair, and 4 girls have long hair. What fraction of the girls have long hair?
1. 1 answer
2. asked by Tim
3. 586 views
10q - 20 is equivalent to _____.2(q - 10) 10(q - 20) 10(q - 2)
1. 3 answers
2. asked by Kyle
3. 581 views
[Sin^2(theta) - tan(theta) ] / [cos^2(theta) - cot(theta)] = tan^2(theta)I am supposed to prove that the left side of the
1. 1 answer
2. asked by Rosh
3. 566 views
I have the equation 50000 = x(1+.065/4)^50Please solve for x and show it step by step, thanks
1. 2 answers
2. asked by Jim
3. 562 views
For MgCl2.6H2O, the solubility at 20°C is 235g/100mL. How much solvent (water) do I need to use to achieve that solubility? Is
1. 1 answer
2. asked by Peter
3. 532 views
the moss plants you might observe on a walk through the woods are
1. 1 answer
2. asked by Anonymous
3. 522 views
Simplify.(xz^3) (x^2 y^-1)^-3 __________ 2z^2 using only positive exponents how do I simplify this?
1. 3 answers
2. asked by Meera
3. 489 views
what happened last?A. president roosevelt proposed the Lend-Lease act B.Germany began invading other countries C. The Japanese
1. 1 answer
2. asked by chicky nuggiesssssss
3. 488 views
Spain has a population of 2015. The men and women together number 1007, and the children together number 1537. How many children
1. 3 answers
2. asked by Liz
3. 484 views
Calculate the linear expansivity of brass of length of 120m that assume a new length of 120.05m when heated through a
1. 2 answers
2. asked by Anonymous
3. 478 views
[1 + sin(theta) + cos(theta)] / [1 + sin(theta) - cos(theta)] = [1+cos(theta)]/ sin(theta)
1. 2 answers
2. asked by Rosh
3. 467 views
a cone is 8cm high and its vertical angle is 62centigrees find the diametre of its base.
1. 1 answer
2. asked by ability
3. 463 views
Take 347 centimetres from 5.2 metres. What is the answer?
1. 3 answers
2. asked by Lee
3. 463 views
gyazo.com/fe97da5414614d449fe6156503e3ac0eanyone know how to solve this rate question?
1. 1 answer
2. asked by peter
3. 431 views
Can someone help me with math quiz : circumference and area of a circle quiz part 1 plz
1. 2 answers
2. asked by Dylan
3. 426 views
I have written a program to find the length of last word.Please tell me where I am wrong.Dim a As String
1. 2 answers
2. asked by Raj
3. 401 views
what is the concentration of the conjugate acid and conjugate base of a 0.2molar acetate copper with pH of 5.0 and pKa of 4.77
1. 1 answer
2. asked by Desen
3. 395 views
A football match is to be played on Saturday in new Zealand 150 degree East. If the match is to be telecast live,at what time
1. 0 answers
2. asked by Aisha umar
3. 389 views
Is smoke a solid, liquid or gas
1. 2 answers
2. asked by Success
3. 387 views
The average age of 5 boys is 13 years.what is their total age?
1. 1 answer
2. asked by Cosmos
3. 386 views
If a Bleach costs £2.80 for 5 litres, how much would I pay for 1/4 litre?
1. 1 answer
2. asked by Lee
3. 367 views
what is 12+55-25+34-74+56
1. 2 answers
2. asked by boi
3. 299 views
X2_2x-8>o find the value of of x
1. 1 answer
2. asked by Anonymous
3. 266 views
3x+2y=2y=1
1. 2 answers
2. asked by Nkurum
3. 246 views
1.Asteelblockweighing12Nispulledupaninclinedplane200abovethehorizontalbyaconstantforceof7.35Nwhichmakesanangleof100abovetheincli
1. 0 answers
2. asked by Nomsa
3. 228 views

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