2,564 Answered Questions for the topic Maths

Maths

12/31/18

If petrol is expected to get exhausted in 100 years with current usage, if we increase the usage/consumption by 50% how many years will it last?

I know the answer is not 50, by by taking examples I came to conclusion of about 66 years, but I want a mathematical derivation without an example.
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Maths

12/30/18

P and Q individually completes a work in 15 and 25 days respectively.In How Mny Days P And Q Can Complete the work if they start working on alternate days. Starting From P And Q?
Pls solve it step by step...for understanding
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Maths

12/29/18

A solid sphere of radius 6 cm is placed in hollow cylinder of height is 10 cm find the volume of empty space
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12/28/18

MATHS INVERSE TRIGNOMETRY PRINCIPAL VALUES
For finding the principal value,in this question:Find the principal value of cot-1(-1/√3)The answer is cot(π-π/3) which is cot (2π/3)why is it not just -π/3?In a similar question, Find the... more
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Maths

12/24/18

If A,B,C are distinct digits,then the largest possible 6 digit number written using 3 digits A, 2 digits B and 1 digit C cannot be equal to (a) AAABBC (b) CAAABB (c) BBAAAC (d) AAABCB (e) AAACBB
pls explain your answer in detail
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12/20/18

To find the initial temperature of glass
When 0.2 kg of coffee at 80°C is poured into 0.45 kg glass,the final temperature of coffee is 65°C.If no heat is gained or lost from the outside,what is the initial temperature of glass? Assume... more
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12/20/18

Distance, displacement speed and velocity

A student went for a run. She ran for exactly 22 minutes at an average speed of 4.0m/s calculate the distance she ran in km and state the equation that links distance travelled, average speed time.
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Maths

12/19/18

On a random Friday in the spring, 88% of students are present at school. If there are 528 students present, then how many total students are enrolled?
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Maths

12/18/18

john has 50 dollars in his wallet. suzann has 30dollars whst percentages of john money does suzann have
jJohn has 50 dollars in his wallet. Susannah has 39 dollars. what percentage of John's money does Susannah have
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Maths Science

12/17/18

divide 48 in two parts such that three times the greater part is 10 less than four times the smaller part
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Maths

12/16/18

Is 1,737,194 divisible by 3?
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Maths Algebra 2

12/14/18

Linear Graph Problem?
In an nutrion experiment, a biologist wants to prepare a special diet for the experimental animals. Two food mixes A and B are available. If mix A contains 20% and mix B contains 10% Protein, What... more
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Maths

12/13/18

In how many ways can we select five letters from the letters of the word NAVAKERALAM which contains exactly 2 A's

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Maths

12/12/18

One bag of peanuts costs $1.52. How many bags can u buy with $34.96?
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12/12/18

discuss the applicability of rolle's theorem f(x)=1+|x-2| interval [0,4]
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12/11/18

How do you solve sinx=-0.44?
How do you solve this trigonometric equation algebraically with intervals of 0°≤x≤360° sin(x-15)=-0.44
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Maths Derivative

12/10/18

What is the derivatives of y = (cos x)(1 − sin2x)
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Maths

12/07/18

How many four-digit numbers are divisible by 9?

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Maths Trigonometry

12/06/18

A right angled traingle xyz has a right angle at y, XY = 9cm, YZ = 3cm and XZ = √90 cm. If ZXY= θ and YZX = a. Then what is SIn θ, Cos θ and Tan θ
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Maths

12/05/18

y , add 7, multiply by 3, then subtract 6.
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Maths

12/04/18

If there are 3 times as many red apples than green. If there are 3 green apples, how many red apples are there
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Maths Probability

12/02/18

Math Question below, HELP PLEASE THANKS
A professional gold player has a probability of 0.08 of landing a hole in one. During training he has 3 attempts at shooting a hole in one. Find the probability that he will:(i)accurately land a... more
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Maths

11/29/18

When do the smoke alarm and air conditioner beep at the same time ?
Smoke alarm beeps every 60 seconds air conditioner beeps every 72 seconds
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11/29/18

Calculating thermal energy release help please!!!
1) a) Heat Capacity (Cp) is the thermal energy it takes to raise 1 kilogram of a substance by 1°C. Seawater has a very high Heat Capacity of 3.993 kJ kg−1 K−1. Assume the Gulf Stream is 80 Sv... more
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Maths

11/27/18

A women spent 2/3 of her Money. She lost 2/3 of the remander and then had $4 left. How much money did she start with?
Hi guys this is for my gate test prep and I hope you can help me solve the equation!
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