Questions and answers by

new user

Questions (2)

Ok, I have few questions which I solved but the answers in he book do not match with the ones that I got.Q1. The de-Brogile
1. 0 answers
2. 394 views
At room temperature of 30 degree celsius, a glass of water takes one minute to cool from 80 degree celsius to 60 degree Celsius.
1. 3 answers
2. 788 views

Here, mass = 700g = 0.7 kg volume = mass/density = 0.7/1000 (as density of water = 1000 kg/cb m) = 7x10^-4 meter cube = 700 cm cube Volume of cube = (10)^3 = 1000 cm^3 Volume of cube ouside water = 1000-700 = 300 cm^3
thank you bobpursley
Let the third side be x. Then the equal sides are 2x-4. As we know, Perimeter=Sum of all the sides, i.e., 57=x + (2x-4) + (2x-4) Solve this, you will get the value of x. Then place the value of x in 2x-4. That is the required answer. (22)
There are 7 choices for first digit, 6 for second and 5 for third digit. So, there can be 7x6x5=210 3-digit numbers.

Ask a New Question